Yvonne Vermaak Singles 5 (3-2) Singles 5 (3-2)

| Outcome | Date_ | Tournament | Surface | Opponent | Score |
|---|---|---|---|---|---|
| Runner-up | 17 September 1978 | San Antonio , Texas, USA | Hard | Stacy Margolin | 5-7, 1-6 |
| Runner-up | 11 January 1982 | Fort Myers , Florida, USA | Hard | Duk-Hee Lee | 0-6, 3-6 |
| Winner | 6 March 1983 | Palm Springs , California, USA | Hard | Carling Bassett | 6-3, 7-5 |
| Winner | 19 September 1983 | Salt Lake City , Utah, USA | Hard | Felicia Raschiatore | 6-2, 0-6, 7-5 |
| Winner | 16 September 1984 | Salt Lake City , Utah, USA | Hard | Terry Holladay | 6-1, 6-2 |