Betsy Nagelsen

Betsy Nagelsen McCormack (born October 23, 1956) is an American former professional tennis player.

Nagelsen was the world's top junior in 1973. She won the 1973 US Champion Girls' 16 and under singles. She also won the USTA Girls' Sportsmanship Award in 1974. She won the doubles championship at the 1978 and 1980 Australian Opens (with Renáta Tomanová and Martina Navratilova, respectively). She reached the singles final of the 1978 Australian Open, losing to Christine O'Neil. Over her 21-year career on the WTA Tour, Nagelsen won 26 doubles titles and 4 singles titles.

Nagelsen reached her highest career ranking in singles by the end of 1981, when she became the World No. 23. She also reached a career high ranking in doubles of No. 11 on March 4, 1988. She had career wins over Martina Navratilova, Arantxa Sánchez Vicario, Sue Barker, Pam Shriver, Claudia Kohde-Kilsch, Rosie Casals, Betty Stöve, and Sylvia Hanika. She was a four-time member of the US Wightman Cup Team in 1974, 1985, 1988 and 1989.

After her retirement in 1996, Nagelsen became a commentator for ABC and ESPN in the United States and Australia's Nine Network. She married Mark McCormack, founder of the sports management group IMG. The couple donated money for the McCormack-Nagelsen Tennis Center at the College of William and Mary in Williamsburg, Virginia. The Intercollegiate Tennis Association's Women's Tennis Hall of Fame is located on the site.

Singles: 1 (1 runner-up)

Outcome	Year	Championships	Surface	Opponent	Score
Runner-up	1978	Australian Open	Grass	Chris O'Neil	3–6, 6–7(3–7)

Doubles: 4 (2 titles, 2 runners-up)

Outcome	Year	Championships	Surface	Partner	Opponents	Score
Runner-up	1977 (Jan.)	Australian Open	Grass	Kerry Reid	Dianne Fromholtz Helen Gourlay	7–5, 1–6, 5–7
Winner	1978	Australian Open	Grass	Renáta Tomanová	Naoko Sato Pam Whytcross	7–5, 6–2
Winner	1980	Australian Open	Grass	Martina Navratilova	Ann Kiyomura Candy Reynolds	6–4, 6–4
Runner-up	1987	Wimbledon	Grass	Elizabeth Smylie	Claudia Kohde-Kilsch Helena Suková	5–7, 5–7

Mixed Doubles: 1 (1 runner-up)

Outcome	Year	Championships	Surface	Partner	Opponents	Score
Runner-up	1987	US Open	Hard	Paul Annacone	Martina Navratilova Emilio Sánchez	4–6, 7–6(8–6), 6–7(12–14)