Tyler Dyson

Minor league players and teams affiliated with the Washington Nationals professional baseball organization include:

Yasel Antuna

Yasel Eneudy Antuna (born October 26, 1999) is a Dominican professional baseball infielder in the Washington Nationals organization.

The Nationals signed Antuna to a minor league contract as an amateur free agent out of the Dominican Republic on July 2, 2016. They gave Antuna a $3.9 million signing bonus, the largest they had ever awarded an international free agent by $2.4 million to that point. Antuna was described by scouts at the time as a potential five-tool player who profiled as a future everyday shortstop in the major leagues.

Antuna debuted professionally in the Gulf Coast League with the GCL Nationals in 2017, appearing in games at shortstop and third base. He played in both games of a double-header on July 23, 2017, in which the GCL Nationals no-hit the GCL Marlins in both seven-inning games, committing a throwing error in the second game that accounted for one of the Marlins' two baserunners in the contest. Midseason rankings that month by MLB Pipeline ranked Antuna as the Nationals' eighth-best prospect. Antuna finished his 2017 season with a .301 batting average in the Gulf Coast League, playing mostly shortstop with several appearances at third base as well.

In August 2018, Antuna underwent season-ending Tommy John surgery.

• Career statistics and player information from Baseball-Reference (Minors)

Nick Banks

Nicholas Matthew Banks (born November 18, 1994) is an American professional baseball outfielder for the Washington Nationals organization

Banks formerly lived in Charlotte, North Carolina, but moved to Tomball, Texas when he was eleven, and graduated from Tomball High School in 2013.

Banks played college baseball for the Texas A&M Aggies. He was drafted by the Washington Nationals in the 4th round of the 2016 MLB draft. He signed and began his professional career with the Auburn Doubledays, spending all of 2016 there, posting a .277 batting average with 19 RBIs and eight doubles. He spent 2017 with the Hagerstown Suns and batted .252 with seven home runs and 58 RBIs.

Banks was one of eleven Nationals prospects who played for the Surprise Saguaros in the Arizona Fall League following the 2019 season.

• Career statistics and player information from Baseball-Reference (Minors)

Ben Braymer

Benjamin John Braymer (born April 28, 1994) is an American professional baseball pitcher in the Washington Nationals organization.

A Louisiana native, Braymer was an eighteenth-round selection out of Auburn University by the Nationals in the 2016 Major League Baseball draft, where he was roommates with Gabe Klobosits, who was drafted by the Nationals the following year. In his first full professional season in 2017, Braymer pitched for the Class-A Short Season Auburn Doubledays and the Class-A Hagerstown Suns. He and Klobosits were both among several minor league pitchers brought over to pitch to the major league Nationals hitters as they prepared for the 2017 National League Division Series.

Braymer led all Nationals minor league pitchers with a 2.28 ERA in 2018, pitching for the Suns and Class-A Advanced Potomac Nationals. Along with Wil Crowe, he was named the Nationals' co-Minor League Pitcher of the Year. He was one of eight Nationals prospects invited to participate in the Arizona Fall League after the 2018 season, where he played for the Salt River Rafters.

Before the 2019 season, MLB Pipeline ranked Braymer as Washington's 25th-best prospect. In late June 2019, he was promoted to the highest minor league level for the first time, joining the starting rotation of the Class-AAA Fresno Grizzlies.

Braymer was added to Nationals 40–man roster following the 2019 season.

• Career statistics and player information from Baseball-Reference (Minors)

Gage Canning

Gage Parker Canning (born April 23, 1997) is an American professional baseball outfielder in the Washington Nationals organization.

Originally from Ramona, California, Canning attended Arizona State University and played college baseball for the Arizona State Sun Devils. As a junior, Canning led the NCAA in triples with 11. He was drafted by the Nationals in the fifth round of the 2018 Major League Baseball draft and chose to turn pro. He made his professional debut with the Auburn Doubledays of the New York–Penn League, the Nationals' Class A Short Season affiliate; in one of his first games with the Doubledays on June 22, 2018, he came a double shy of hitting for the cycle. In July 2018, he was promoted to the Nationals' Class A Full Season affiliate, the Hagerstown Suns of the South Atlantic League.

As an outfielder, Canning was ranked as the Nationals' thirteenth-best prospect in July 2018 by MLB Pipeline.

Canning stands 5 feet 11 inches (1.80 m), and while he bats from the left side, he throws right-handed. After he was drafted by the Nationals, team scouting director Kris Kline compared him to Nationals outfielder Adam Eaton, describing him as a "classic over-achiever" and predicting he will play in the major leagues. Speed is a key part of his game.

• Career statistics and player information from Baseball-Reference (Minors)

Jacob Condra-Bogan

Jacob N. Condra-Bogan (born August 30, 1994) is an American professional baseball pitcher in the Washington Nationals organization.

After being adopted out of foster care at age 15 by the same family that had previously adopted his biological sister, Condra-Bogan attended Wofford College and Georgia Southern University, where he pitched for the Wofford Terriers and Georgia Southern Eagles respectively. Drafted in the 32nd round of the 2017 Major League Baseball draft by the Toronto Blue Jays, he chose not to sign with Toronto and instead signed a contract to pitch for the Washington Wild Things in the independent Frontier League. After posting a 1.17 ERA over 15 innings with the Wild Things, Condra-Bogan had his rights purchased by the Kansas City Royals shortly before the start of 2018 spring training. With the Class-A Lexington Legends, a Kansas City affiliate, Condra-Bogan pitched to a 2.08 ERA over 16 appearances, all of them in relief, before earning a mid-season promotion to the High-A Wilmington Blue Rocks.

On July 22, 2018, Condra-Bogan was traded from Kansas City to the Washington Nationals in exchange for major league outfielder Brian Goodwin.

Condra-Bogan is known for a fastball that has hit 99 miles per hour (159 km/h) in relief outings. Royals assistant general manager J.J. Picollo noted in 2018 that he had the ability to repeat his delivery and the physical strength to consistently throw in the mid- to upper 90s without losing command of the strike zone. The Kansas City Star reported that he continued taking online courses to earn his master's degree from Georgia Southern while playing minor league baseball in the Royals organization.

Condra-Bogan was one of eleven Nationals prospects who played for the Surprise Saguaros in the Arizona Fall League following the 2019 season. He appeared in six games without allowing a run before being removed from the roster and replaced by Pearson McMahan.

• Career statistics and player information from Baseball-Reference (Minors)

Aldrem Corredor

Aldrem Steven Corredor (born October 27, 1995) is a Venezuelan professional baseball first baseman and outfielder in the Washington Nationals organization.

Corredor agreed to a minor league contract with the Nationals in August 2012 as an international free agent out of Venezuela at the age of 16. Signed as an outfielder, he was described by the team as a player capable of handling both left and right field. During his first four seasons in the Nationals farm system, playing rookie ball with the Dominican Summer League Nationals and Gulf Coast League Nationals, Corredor also saw playing time at first base and in center field. During a June 25, 2013, game against the Dominican Summer League Brewers, from the sixth inning onward, Corredor shifted to third base—a very unusual position for a left-handed fielder to play—after third baseman Neivy Pilier exited the game due to an injury. He converted his only chance during three innings as a left-handed third baseman, earning an assist and committing no errors. From 2015 onward, Corredor began seeing more playing time at first base than in the outfield.

Baseball America described Corredor as a "big-bodied" player at the time he was signed by the Nationals but noted he was in better shape heading into the 2013 season. While The Washington Post characterized him in 2012 as a "power hitter", Corredor hit just four home runs through his first four years in rookie ball, although since 2015, both his batting average and slugging percentage have trended markedly upward. With the Class-A Hagerstown Suns of the South Atlantic League, he was named an SAL All-Star in 2017 and led the Northern Division in the June 20 All-Star Game by going 2-for-3 with two runs batted in.

• Career statistics and player information from Baseball-Reference (Minors)

Austin Davidson

Austin Daniel Davidson (born January 3, 1993) is an American professional baseball infielder in the Washington Nationals organization.

Davidson attended Oxnard High School in his hometown of Oxnard, California, and went on to play baseball for the Pepperdine Waves at nearby Pepperdine University in Malibu, California. Before turning pro, Davidson played mostly as a third baseman. Both Davidson and Waves teammate Bryan Langlois were drafted by the Nationals in the 2014 Major League Baseball draft, with Davidson being taken in the 13th round. After signing with the team, Davidson was assigned to the Auburn Doubledays in the Class-A Short Season New York–Penn League. In the Nationals system, Davidson was converted to a second baseman, still appearing at times at third base and also making some appearances starting in 2017 as a first baseman. After hitting .319 with the Class-A Advanced Potomac Nationals in the opening weeks of the 2018 season, Davidson was promoted to the Class-AA Harrisburg Senators on April 23, 2018, going 3-for-4 in his debut against the Trenton Thunder that same day.

With his left-handed swing, ability to generate power, and some defensive flexibility around the infield, Davidson has been compared by player development staff to former Nationals infielder Danny Espinosa. Though not ranked as a top prospect for the Nationals at the start of the 2017 or 2018 seasons, Fangraphs contributor and sabermetrician Carson Cistulli selected him as "Cistulli's Guy" in both years, acknowledging him as a lower-ranked but still intriguing prospect and comparing him to better-regarded former Nationals prospect Max Schrock.

• Career statistics and player information from Baseball-Reference (Minors)

Jeremy De La Rosa

Jeremy José De La Rosa (born January 16, 2002) is a Dominican professional baseball outfielder in the Washington Nationals organization.

The Nationals signed De La Rosa as an international amateur free agent out of the Dominican Republic, where he trained at the Quality Baseball Academy, for a reported $300,000 bonus on July 2, 2018. After signing De La Rosa, the Nationals sent him to their instructional league in West Palm Beach, Florida, that fall.

De La Rosa ranked as the Nationals' twelfth-best prospect entering the 2019 season, according to MLB Pipeline. Baseball America praised his "promising tools" and ability to make contact at the plate without swinging out of the strike zone. Mark Scialabba, the Nationals' player development director, named De La Rosa as one of his breakout candidates in 2019.

• Career statistics and player information from Baseball-Reference (Minors)

Mason Denaburg

Mason Alan Denaburg (born August 8, 1999) is an American professional baseball pitcher in the Washington Nationals organization.

Denaburg attended Merritt Island High School in Merritt Island, Florida. As a senior, he pitched to a 0.99 ERA in 35.1 innings along with batting .410 with five home runs and 21 RBIs. He committed to play college baseball at the University of Florida.

Denaburg was drafted 27th overall by the Washington Nationals in the 2018 MLB Draft. He signed with the organization on July 3. Denaburg did not appear in a game during the 2018 season. He made his professional debut for the Gulf Coast League Nationals on June 24, 2019. Over ​20 ⁄₃ innings, he pitched to a 7.52 ERA, walking 14 while striking out 19.

• Career statistics and player information from Baseball-Reference (Minors)

Tyler Dyson

Tyler Dyson (born December 24, 1997) is an American professional baseball pitcher in the Washington Nationals organization.

Dyson attended Braden River High School in Bradenton, Florida. As a senior, he pitched to a 6-1 record with a 0.38 ERA along with batting .333 with two home runs and 17 RBIs. Undrafted out of high school in the 2016 MLB draft, he enrolled at the University of Florida to play college baseball for the Florida Gators.

As a freshman at Florida in 2017, Dyson went 4-0 with a 3.23 ERA in 39 innings. Dyson started Game 3 of the Gainesville Super Regional of the 2017 NCAA Division I Baseball Tournament against Wake Forest and struck out seven batters over five innings, clinching a trip to the College World Series. He also started the clinching game of the CWS against LSU, which Florida eventually won. That summer, he played in the Northwoods League where he posted a 1.59 ERA over ​28 ⁄₃ innings. In 2018, as a sophomore, Dyson appeared in 14 games (11 starts) in which he pitched to a 5-3 record with a 4.47 ERA. Following the season, he played in the Cape Cod Baseball League, compiling a 2.37 ERA in 19 innings. Prior to the 2019 season, Dyson was named to the Golden Spikes Award watch list along with being named a Baseball America preseason All-American. For the season, he appeared in 11 games (nine starts), pitching to a 3-2 record with a 4.95 ERA.

Dyson was selected by the Washington Nationals in the fifth round of the 2019 MLB draft and signed for $500,000. He made his professional debut with the Gulf Coast League Nationals before being promoted to the Auburn Doubledays after one game. Over nine starts between the two teams, Dyson went 2-1 with a 1.07 ERA, striking out 17 over​33 ⁄₃ innings.

• Career statistics and player information from Baseball-Reference

Steven Fuentes

Steven Oneil Fuentes (born May 4, 1997) is a Panamanian professional baseball pitcher in the Washington Nationals organization.

As an international amateur free agent, Fuentes signed with Washington for a $35,000 bonus in 2013. Fuentes progressed to full-season ball in 2017, which he divided between the Class-A Hagerstown Suns and Class-A Advanced Potomac Nationals, pitching both in relief and as a starter. He was one of the pitchers selected to pitch to Nationals superstar outfielder Bryce Harper as he rehabbed at the FITTEAM Ballpark of the Palm Beaches in September 2017 after a knee injury. In 2018, Fuentes spent most of the season with Potomac, where he started in 2019 before being promoted to Class-AA Harrisburg. With the Senators, Fuentes was converted from a regular relief role into a starting pitcher.

A groundball pitcher, Fuentes employs a crossfire delivery to add deception to his pitches, running his sinking fastball in the low to mid-90s and complementing it with a slider and changeup.

• Career statistics and player information from Baseball-Reference (Minors)

Luis García

Luis Victoriano García (born May 16, 2000) is an American professional baseball infielder of Dominican descent in the Washington Nationals organization. As of May 2019 he is ranked as the #69 prospect in baseball according to MLB.com

García's father, Luis Rafael García, was a Dominican-born shortstop who briefly reached the major leagues with the Detroit Tigers during their 1999 season. The younger García was born in New York City, but moved to the Dominican Republic at the age of 3. At the age of 16, he signed a contract with the Nationals on July 2, 2016, as an international free agent out of the Dominican Republic. He accepted a $1.3 million signing bonus, the second-most the Nationals awarded an international player in the 2016 class behind fellow Dominican shortstop Yasel Antuna.

Baseball America ranked García as the Nationals' seventh-best prospect before the 2017 season. García made his professional debut in 2017 with the Gulf Coast League Nationals, appearing as both a second baseman and shortstop during the season and often forming the GCL Nationals' double-play tandem with Antuna. Both players put up batting averages slightly above .300, with García's the better of the two at .302, during their 2017 campaigns. García advanced quickly in the 2018 season, earning a midseason promotion from the Class-A Hagerstown Suns to the High-A Potomac Nationals, and he was the youngest player and the first ever born in the 2000s selected to the All-Star Futures Game in 2018, playing for Team World against fellow Nationals infield prospect Carter Kieboom and Team USA.

García was the youngest player invited to participate in a major league spring training camp in 2019, with the Nationals. He was one of eleven Nationals prospects who played for the Surprise Saguaros in the Arizona Fall League that year, driving in the Saguaros' only run in the championship game versus the Salt River Rafters on October 25, 2019.

• Career statistics and player information from Baseball-Reference (Minors)

Yadiel Hernández

Yadiel Hernández (born October 9, 1987) is a Cuban professional baseball outfielder in the Washington Nationals organization. He previously played in the Cuban National Series for Matanzas.

Hernández began his baseball career with the Cocodrilos in 2009. After hitting .369 for Matanzas in the 2014–15 Cuban National Series, Hernández defected to the United States at age 28 along with Cuban national teammate Luis Yander La O in June 2015, while they were in North Carolina for a game against American college baseball players. Hernández was declared eligible to sign with a Major League Baseball team in April 2016. In September 2016, the Washington Nationals, not usually a major player for Cuban talent, signed him to a minor league deal with a $200,000 signing bonus.

After playing for the Class-AA Harrisburg Senators in 2017 and 2018, Hernández was promoted to Class-AAA. He hit his first professional grand slam on May 9, 2019, for the Fresno Grizzlies of the Pacific Coast League. Along with teammate Dakota Bacus, he represented Fresno in the 2019 Triple-A All-Star Game.

• Career statistics and player information from Baseball-Reference (Minors)

Andrew Istler

Andrew James Istler (born September 18, 1992) is an American professional baseball pitcher in the Washington Nationals organization.

A native of Toledo, Ohio, Istler pitched and played outfield for the Blue Devils at Duke University. The Los Angeles Dodgers drafted him in the 23rd round of the 2015 Major League Baseball draft as a pitcher, and he chose to sign with the organization. Despite a difficult first professional season with the Ogden Raptors of the Pioneer League, in which he posted an 8.38 ERA over 29 innings, Istler was selected to participate in the Dodgers' "DriveLine" conditioning program, where he used a weighted ball and increased his fastball velocity from the high-80s mph range up to the mid-90s. Istler participated in major league spring training camp in 2017 and again in 2018. After posting a 2.37 ERA across 79⅓ innings between the Class-A Advanced Rancho Cucamonga Quakes, the Class-AA Tulsa Drillers, and the Class-AAA Oklahoma City Dodgers, Istler was traded to the Washington Nationals on August 31, 2018, for major league pitcher Ryan Madson.

After spending the first month and a half of the 2019 season in extended spring training with the Nationals, Istler was assigned to the Class-A Advanced Potomac Nationals.

Istler stands 5 feet 11 inches (1.80 m), on the short side for a professional baseball pitcher, but compensates for his lack of stature with an overhand delivery. He throws a fastball and curveball.

• Career statistics and player information from Baseball-Reference (Minors)

Gabe Klobosits

Gabriel Michael Klobosits (born May 16, 1995) is an American professional baseball pitcher in the Washington Nationals organization.

Klobosits, a native of Katy, Texas, pitched for Pope John XXIII High School and went on to play for the Galveston College Whitecaps. In 2016, he moved to Auburn University and pitched for the Auburn Tigers. In 2017, Klobosits missed the cut for the Tigers' rotation and pitched mostly in long relief. He was drafted by the Nationals in the 36th round of the 2017 Major League Baseball draft and chose to sign with the organization.

After signing, Klobosits began his professional career with the GCL Nationals. He was promoted to the Auburn Doubledays in July and then to the Hagerstown Suns in August. In 30.2 relief innings pitched between the three clubs, he was 1-0 with a 1.47 ERA and 1.01 WHIP.

With an imposing physical profile at 6 ft 7 in (2 m) and 270 pounds (120 kg), Klobosits was described in 2017 by Baseball America's Carlos Collazo as having "excellent plane" and a potent mid-90s fastball. He was one of several pitching prospects the Nationals brought up for a simulated game to prepare their major league hitters for the 2017 National League Division Series. Klobosits underwent Tommy John surgery in May 2018 after posting eleven appearances out of the bullpen for the Potomac Nationals.

A preseason prospect ranking by MLB Pipeline in 2018 listed Klobosits as the Nationals' eighteenth-best prospect, citing his "ability to dominate hitters with his blend of size, stuff and deception".

• Career statistics and player information from Baseball-Reference (Minors)

Andry Lara

Andry Lara (born January 6, 2003) is a Venezuelan professional baseball pitcher in the Washington Nationals organization.

Lara, who is from Maracaibo, trained with Zulia Academy as an amateur, overcoming knee problems as a youth and adding considerable velocity as he grew in strength. By age 16, his fastball could run up to 96 miles per hour (154 km/h). MLB Pipeline considered him the sixteenth-best prospect in the 2019 international amateur free agent class and the best overall pitcher. The Nationals signed Lara for a reported $1.25 million bonus on July 2, 2019. He was the Nationals' top-ranked international signee for the period.

Lara is right-handed and was described by MLB Pipeline at the time of his signing as a potential future frontline starter. Along with a two-seam fastball that reaches the mid-90s, Lara throws a breaking ball and a changeup.

Gilbert Lara

Gilbert Lara Peguero (born October 30, 1997) is a Dominican professional baseball shortstop in the Washington Nationals organization.

The Milwaukee Brewers signed Lara for a $3.1 million signing bonus. Lara made his professional debut with the Arizona Brewers of the Rookie-level Arizona League in 2015, and he was promoted to the Helena Brewers in August. Lara ended 2015 with a .240 batting average, with one home run and 30 RBIs in 63 games. Lara returned to Helena for the whole 2016 season where he batted .250 with two home runs and 28 RBIs. In 2017, Lara played for the Wisconsin Timber Rattlers where he posted a .193 average, three home runs and 22 RBIs.

Lara was acquired by the Washington Nationals on August 31, 2018, along with catcher and first baseman KJ Harrison, his Timber Rattles teammate, for starter Gio Gonzalez.

• Career statistics and player information from Baseball-Reference (Minors)

Drew Mendoza

Andrew Keeler Mendoza (born October 10, 1997) is an American professional baseball third baseman in the Washington Nationals organization.

Mendoza attended Lake Minneola High School in Minneola, Florida. As a senior in 2016, he hit .416 with seven home runs and 31 RBIs. He was drafted by the Detroit Tigers in the 36th round of the 2016 MLB draft, but he did not sign and instead chose to enroll at Florida State University to play college baseball for the Florida State Seminoles.

In 2017, as a freshman at Florida State, Mendoza appeared in 43 games, batting .270 with ten home runs and 33 RBIs. He was named a Freshman All-American, to the All-ACC Freshman Team, and to the College World Series All-Tournament Team. Following the season, he played in the Cape Cod Baseball League. As a sophomore in 2018, Mendoza started all 63 of FSU's games, hitting .313 with seven home runs and 44 RBIs. For the second straight year, he was named an All-American. He was also named to the All-ACC Third Team. After the season, he returned to play in the Cape Cod League once again. In 2019, Mendoza's junior year, he hit .308 with 16 home runs and 56 RBIs in 65 games.

Mendoza was considered one of the top prospects for the 2019 MLB draft. He was selected by the Washington Nationals in the third round (94th overall), and signed for $800,000. He made his professional debut with the Hagerstown Suns, and spent the whole season there, slashing .264/.377/.383 with four home runs and 25 RBIs over 55 games.

• Career statistics and player information from Baseball-Reference

Israel Pineda

Israel Abrahan Pineda (born April 3, 2000) is a Venezuelan professional baseball catcher in the Washington Nationals organization.

A native of Maracay, Pineda signed with Washington as an international amateur free agent in 2016 for a reported $450,000 bonus. He made his professional debut for the Gulf Coast League Nationals in 2017 and advanced to the New York–Penn League's Auburn Doubledays in 2018. He was named a New York–Penn League All-Star during the 2018 season, hitting .273 with four home runs during the short season.

By midway through the 2018 season, Pineda was generating some buzz as a rising prospect in the Nationals organization, with a Mid-Atlantic Sports Network writer suggesting he was on track to becoming a top-five organizational prospect. Before the 2019 season, Pineda was ranked by MLB Pipeline as the Nationals' eighth-best prospect and top overall catching prospect.

• Career statistics and player information from MLB, or ESPN, or Fangraphs, or Baseball-Reference (Minors)

Nick Raquet

Nicholas Robert Raquet (born December 12, 1995) is an American professional baseball pitcher in the Washington Nationals organization.

A Centre County, Pennsylvania, native, Raquet attended State College Area High School and went on to pitch for the Tar Heels at the University of North Carolina in 2015. He transferred to the College of William & Mary for the 2017 spring season, where he struggled to a 4.66 ERA, although he led the Tribe in strikeouts. Despite his high ERA, the Nationals used their third-round selection in the 2017 Major League Baseball draft on Raquet, with CBS Sports opining that the left-hander "has much better stuff than his spring stats would suggest". His drafting by the Nationals made him the third-highest-drafted William & Mary baseball player at the time. Raquet signed with the Nationals on June 20, 2017, and was assigned to the Gulf Coast League Nationals, quickly moving up to the Auburn Doubledays and finishing the season there. In 12 combined starts between the Nationals and the Doubledays, he posted a 3-2 record with a 2.36 ERA and a 1.22 WHIP. In 2018, Raquet progressed through Class-A baseball, earning a June promotion from the Hagerstown Suns to the more advanced Potomac Nationals.

MLB Pipeline ranked Raquet as the Nationals' sixteenth-best prospect before the start of the 2018 season. After the 2019 season, Raquet was one of eleven Nationals prospects who played for the Surprise Saguaros in the Arizona Fall League.

At the time he was drafted, Raquet's fastball sat in the low 90s but could touch 96 mph for extended periods. He compliments the fastball with secondary pitches that include a changeup.

• Career statistics and player information from Baseball-Reference (Minors)

Jhon Romero

Jhon Jairo Romero (born January 17, 1995) is a Colombian professional baseball pitcher in the Washington Nationals organization.

As a boy, Romero played catcher, but he began finding success as a pitcher as he matured. Older than most international amateurs when he joined a professional baseball organization, Romero was 20 years old when the Chicago Cubs signed him out of Colombia in 2015 and assigned him to their Dominican Summer League affiliate. At the time, Cubs scout Manuel Esquivia said the organization envisioned him as a possible future closer, as he touched 94 miles per hour (151 km/h) in his tryout with the Chicago organization.

After spending two seasons in the Dominican Summer League, Romero was assigned to the Cubs' stateside affiliates in the 2017 season and shot through the low minors, rising from the Arizona League Cubs to the short-season Eugene Emeralds of the Northwest League before finishing out the season with the South Bend Cubs of the Midwest League. He led Cubs relief prospects with a 0.86 ERA and led all minor league pitchers who pitched at least 25 innings with a 0.62 WHIP that year, across the three levels.

Promoted to the Myrtle Beach Pelicans in the Advanced-A Carolina League to begin the 2018 season, Romero posted a 3.27 ERA and 1.30 WHIP over 32 appearances through July. Hours before the Major League Baseball trade deadline on July 31, 2018, the Cubs traded Romero to the Washington Nationals for Brandon Kintzler.

• Career statistics and player information from Baseball-Reference (Minors)

Karlo Seijas

Karlo Domingo Seijas (born September 6, 2000) is a Venezuelan professional baseball pitcher in the Washington Nationals organization.

Ranked #48 on Baseball America's list of amateur international free agents for the 2017 signing period, Seijas was signed by the Nationals with a $300,000 bonus on July 2, 2017. A right-handed pitcher, by the age of 16, Seijas reportedly sat around 92 miles per hour (148 km/h) with his fastball. He drew comparisons from scouts to countrymen Félix Hernández and Carlos Zambrano. He started his baseball career at the AQAgency Academy in Maracay, near his hometown of San Mateo, Aragua, and reportedly began playing baseball at age 3.

Seijas made his professional debut for the Dominican Summer League Nationals on June 6, 2018.

• Career statistics and player information from Baseball-Reference (Minors)

Jackson Tetreault

Jackson Tetreault (born June 3, 1996) is an American professional baseball pitcher in the Washington Nationals organization.

A native of Ruskin, Florida, Tetreault attended Earl J. Lennard High School. His father, Curt Tetreault, was one of his baseball coaches, as well as a local tennis pro; he taught his son how to incorporate some of the mechanics of a tennis serve into his pitching windup, delivery, and followthrough. After high school, Tetreault pitched one season for Cameron University in Oklahoma before transferring back to the Tampa Bay Area to attend and play baseball at State College of Florida, Manatee–Sarasota. The Nationals drafted him in the seventh round of the 2017 Major League Baseball draft and signed him for a reported $300,000 bonus.

After pitching for the Gulf Coast League Nationals and Auburn Doubledays, short-season teams, during his first taste of professional baseball in 2017, Tetreault advanced to full-season ball by the 2018 season, which he split between the Class-A Hagerstown Suns and Class-A Advanced Potomac Nationals. During the offseason, he lived in West Palm Beach, across the Florida peninsula from his hometown, to work out at the Nationals' spring training complex and prepare for the next season. Before the 2019 season, MLB Pipeline ranked him as the Nationals' 27th-best prospect. In late April 2019, the 22-year-old Tetreault was promoted to the Class-AA Harrisburg Senators for the first time.

Tetreault stands 6 feet 5 inches (1.96 m) and has a lanky build. He throws a fastball in the low to mid-90s, a cutter, a curveball, and a changeup.

• Career statistics and player information from Baseball-Reference (Minors)

Rodney Theophile

Rodney Darien Theophile Cuthbert (born September 16, 1999) is a Nicaraguan professional baseball pitcher in the Washington Nationals organization.

Theophile grew up on the Mosquito Coast of Nicaragua, in the town of Pearl Lagoon. He began playing baseball at age 12. Originally a first baseman, Theophile was discovered by professional baseball scout Alex Mongrío, who recognized his potential as a pitcher. In 2015, Theophile traveled to the Dominican Republic to train at the MVP Rivera Sport Academy. He participated in an international showcase for Major League Baseball organizations in early 2016 in the Dominican Republic—the only Nicaraguan prospect at that showcase, El Nuevo Diario reported at the time. While training in the Dominican Republic, Theophile sharpened his curveball and improved the velocity of his fastball to top out above 90 miles per hour (140 km/h).

The San Francisco Giants expressed interest in Theophile, reportedly signing him as an international amateur free agent in 2017, shortly after Theophile's 18th birthday. However, the deal was never finalized and ultimately fell through. Theophile, an admirer of Washington Nationals pitcher Max Scherzer, subsequently signed with Washington for a $20,000 bonus. He made his professional debut with the Nationals' Gulf Coast League affiliate in July 2018.

At the time he signed with the Nationals, Theophile was listed at 6 feet 5 inches (1.96 m) and topped out at a reported 94 miles per hour (151 km/h) on his fastball, with a Nationals scout telling La Prensa he expected Theophile to further increase his velocity during the course of his development.

Theophile is a cousin of Kansas City Royals infielder Cheslor Cuthbert on his mother's side. His parents separated when he was 8 years old. His father instilled in him an interest in baseball, taking him to games when he was a boy, while his mother, a former member of the Nicaragua women's national basketball team, preferred that he take up basketball instead. Theophile's father died of a heart attack in 2016, at age 39, while Theophile was abroad for training in Panama and the Dominican Republic.

• Career statistics and player information from Baseball-Reference (Minors)

Trey Turner

Trey Eugene Daniel Turner (born June 15, 1996) is an American professional baseball pitcher in the Washington Nationals organization. He was drafted in the 10th round of the 2017 Major League Baseball draft by the Nationals.

Turner was a two-way player at Neosho High School, seeing time as an outfielder as well as a catcher while also pitching. He went on to attend Crowder College, where he was a position player for the Crowder Roughriders, before attending Missouri State University. He primarily worked out of the bullpen as a right-handed relief pitcher for the Missouri State Bears, racking up 22 strikeouts in 13⅓ innings with a 2.03 ERA and a 2–0 record in his junior year before an injury ended his season in April 2017. Turner underwent Tommy John surgery on his right elbow. The Nationals, who drafted him in June, were known for their tendency to draft pitchers who needed to have or had already undergone Tommy John surgery, including 2012 draft first-round pick Lucas Giolito and 2016 draft third-round pick Jesus Luzardo, and the team's scouting director told The Washington Post that the organization would "rehab him the right way". He returned to action for the 2018 season, making his professional debut with the Auburn Doubledays on June 16, one day after his 22nd birthday.

Upon being drafted by the Nationals, Turner also attracted some tongue-in-cheek media attention due to the similarity of his name to Nationals shortstop Trea Turner, who finished second in the voting for 2016 National League Rookie of the Year. Both Turners pronounce their name the same way, with the only difference being in the spelling of the first name.

• Career statistics and player information from Baseball-Reference (Minors)

Below are the rosters of the minor league affiliates of the Washington Nationals:

Triple-A

Double-A

Class A-Advanced

Class A

Short A

Rookie

Foreign Rookie