Back بيتسي ناجيلسين Arabic بيتسى ناجيلسين ARZ Betsy Nagelsenová Czech Betsy Nagelsen German Betsy Nagelsen Spanish بتسی ناگلسن Persian Betsy Nagelsen French Betsy Nagelsen Hungarian Betsy Nagelsen Italian ベッツィ・ナゲルセン Japanese
| Country (sports) |  United States |
|---|---|
| Residence | Maui, Hawaii & Orlando, Florida |
| Born | October 23, 1956 St. Petersburg, Florida |
| Height | 1.75 m (5 ft 9 in) |
| Turned pro | 1973 |
| Retired | 1996 |
| Plays | Right-handed |
| Prize money | $1,016,519 |
| Singles | |
| Career record | 194–256 |
| Career titles | 4 |
| Highest ranking | No. 23 (end 1981)[1] |
| Grand Slam singles results | |
| Australian Open | F (1978) |
| French Open | 2R (1975, 1978) |
| Wimbledon | 4R (1981, 1986) |
| US Open | 3R (1974, 1976, 1980, 1988) |
| Doubles | |
| Career record | 385–253 |
| Career titles | 26 |
| Highest ranking | No. 11 (March 14, 1988) |
| Grand Slam doubles results | |
| Australian Open | W (1978, 1980) |
| French Open | SF (1981, 1985) |
| Wimbledon | F (1987) |
| US Open | SF (1978, 1984, 1987) |
| Mixed doubles | |
| Grand Slam mixed doubles results | |
| US Open | F (1987) |
Helen Elizabeth "Betsy" Nagelsen McCormack (born October 23, 1956) is an American former professional tennis player.