Aaron Slegers

Slegers attended Notre Dame Preparatory High School in Scottsdale, Arizona. He pitched for the school's baseball team, spending most of his junior year on the junior varsity team. He underwent a growth spurt between his junior and senior years, increasing from 6 feet 2 inches (1.88 m) to 6 feet 9 inches (2.06 m), and resulting arm pain as his bones grew faster than his tendons limited him to only two innings pitched in his senior year. He enrolled at Indiana University Bloomington, where he made the Indiana Hoosiers baseball team as a walk-on. He threw one inning before he suffered a broken wrist when hit by a line drive. The next year, he had a stress fracture in his right tibia. His injuries limited him to throwing  8 ¹⁄₃ total innings in his freshman and sophomore years. In 2013, his junior year, Slegers helped Indiana win the Big Ten Conference's regular-season championship and the conference tournament, and Indiana appeared in the 2013 NCAA Division I Baseball Tournament. He was named the Big Ten Conference Baseball Pitcher of the Year

The Minnesota Twins selected Slegers in the fifth round of the 2013 Major League Baseball draft. He signed with the Twins, receiving a $380,000 signing bonus. He began the 2014 season with the Cedar Rapids Kernels of the Class A Midwest League, and was promoted to the Fort Myers Miracle of the Class A-Advanced Florida State League in July. He finished 2014 with a combined 9-8 record with a 4.53 ERA between the two clubs.He returned to Fort Myers in 2015, and was promoted to the Chattanooga Lookouts of the Class AA Southern League in August. He pitched for Chattanooga in 2016. The Twins invited him to spring training as a non-roster player in 2017.

On August 17, 2017, Slegers made his major league debut for the Twins.

Slegers' father, Robert, is 7 feet (2.1 m) tall, while his mother, Christie, is 5 feet 11 inches (1.80 m). His older sister, Rebecca, played volleyball at Lehigh University.