Yvonne Vermaak was born in Gqeberha in 1956. Lineball holds stats from 524 of her games across 1973–1988.
Includes finals, playoffs and exhibition games, so totals run higher than regular-season figures.
| Season | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1988 Wta tourSouth Africa | 1 | 0 | – | – | 0 | 2 | 4 | 12 | 0 | – | – | – |
| 1987 Wta tourSouth Africa | 4 | 1 | – | – | 2 | 6 | 26 | 45 | 0 | – | – | – |
| 1986 Wta tourSouth Africa | 17 | 6 | – | – | 14 | 24 | 149 | 182 | 1 | 3 | – | – |
| 1985 Wta tourSouth Africa | 29 | 8 | – | – | 26 | 43 | 270 | 337 | 1 | 3 | 2 | – |
| 1984 Wta tourSouth Africa | 57 | 29 | 1 | 1 | 69 | 61 | 592 | 572 | 15 | 9 | – | – |
| 1983 Wta tourSouth Africa | 59 | 33 | 2 | 2 | 77 | 62 | 639 | 611 | 10 | 10 | – | – |
| 1982 Wta tourSouth Africa | 63 | 36 | – | – | 80 | 65 | 690 | 678 | 19 | 9 | – | – |
| 1981 Wta tourSouth Africa | 47 | 19 | – | – | 45 | 59 | 448 | 485 | 6 | 6 | – | 1 |
| 1980 Wta tourSouth Africa | 38 | 19 | – | – | 42 | 40 | 366 | 355 | 7 | 2 | – | – |
| 1979 Wta tourSouth Africa | 41 | 17 | – | – | 38 | 53 | 371 | 405 | 3 | 3 | – | – |
| 1978 Wta tourSouth Africa | 51 | 28 | – | 1 | 59 | 54 | 532 | 494 | 8 | 4 | – | – |
| 1977 Wta tourSouth Africa | 53 | 36 | 3 | 3 | 77 | 39 | 609 | 493 | 12 | 6 | – | – |
| 1976 Wta tourSouth Africa | 32 | 14 | 1 | 2 | 35 | 39 | 325 | 339 | 6 | 2 | – | – |
| 1975 Wta tourSouth Africa | 27 | 15 | – | – | 36 | 27 | 291 | 262 | 3 | 1 | – | – |
| 1974 Wta tourSouth Africa | 3 | 1 | – | – | 3 | 4 | 33 | 38 | 0 | – | – | – |
| 1973 Wta tourSouth Africa | 2 | 0 | – | – | 1 | 4 | 12 | 28 | 0 | – | – | – |
| Career16 seasons | 524 | 262 | 7 | 9 | 604 | 582 | 5,357 | 5,336 | 91 | 58 | 2 | 1 |
| Game | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Dallas: Round of 32 v Heather LudloffL 0-2 8 Feb | 0 | – | – | 0 | 2 | 4 | 12 | 0 | – | – | – |
| Split | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| LossesResult | 262 | 0.0 | – | 0.0 | 0.3 | 2.0 | 7.5 | 13.4 | 0.2 | 0.1 | 0.0 | 0.0 |
| WinsResult | 262 | 1.0 | 0.0 | 0.0 | 2.0 | 0.2 | 13.0 | 6.9 | 0.2 | 0.1 | 0.0 | – |
| Regular seasonStage · won 223 of 438 | 438 | 0.5 | – | – | 1.2 | 1.1 | 10.3 | 10.1 | 0.2 | 0.1 | 0.0 | 0.0 |
| FinalsStage · won 39 of 86 | 86 | 0.5 | 0.1 | 0.1 | 1.0 | 1.2 | 9.9 | 10.6 | 0.2 | 0.0 | – | – |
| Martina NavratilovaOpponent · won 0 of 14 | 14 | 0.0 | – | – | 0.1 | 2.0 | 5.3 | 13.0 | 0.1 | 0.1 | – | – |
| Chris EvertOpponent · won 0 of 11 | 11 | 0.0 | – | – | 0.2 | 2.0 | 3.6 | 12.5 | 0.1 | 0.1 | – | – |
| Virginia RuziciOpponent · won 3 of 10 | 10 | 0.3 | – | – | 0.7 | 1.5 | 8.3 | 11.8 | 0.3 | 0.1 | – | – |
| Sharon Walsh PeteOpponent · won 5 of 8 | 8 | 0.6 | – | – | 1.4 | 0.9 | 12.1 | 10.4 | 0.3 | 0.1 | – | – |
| Wendy TurnbullOpponent · won 1 of 8 | 8 | 0.1 | – | – | 0.4 | 1.8 | 6.1 | 12.1 | 0.1 | – | – | – |
| Anne HobbsOpponent · won 3 of 7 | 7 | 0.4 | – | – | 1.1 | 1.6 | 12.0 | 13.9 | 0.3 | 0.1 | – | – |
| Dianne FromholtzOpponent · won 1 of 7 | 7 | 0.1 | – | – | 0.4 | 1.9 | 7.7 | 12.7 | 0.1 | 0.3 | – | – |
| Evonne GoolagongOpponent · won 1 of 6 | 6 | 0.2 | – | – | 0.3 | 1.7 | 5.2 | 11.2 | 0.0 | – | – | – |
| Ivanna MadrugaOpponent · won 2 of 6 | 6 | 0.3 | – | – | 1.2 | 1.5 | 11.2 | 12.2 | 0.0 | 0.2 | – | – |
| Pam TeeguardenOpponent · won 3 of 6 | 6 | 0.5 | – | – | 1.2 | 1.2 | 11.5 | 10.8 | 0.3 | – | – | – |
| Patricia MedradoOpponent · won 5 of 6 | 6 | 0.8 | – | – | 1.8 | 0.3 | 12.0 | 7.0 | 0.0 | – | – | – |
| Sylvia HanikaOpponent · won 3 of 6 | 6 | 0.5 | – | – | 1.0 | 1.0 | 8.0 | 9.5 | 0.2 | – | – | – |
| Tracy AustinOpponent · won 0 of 6 | 6 | 0.0 | – | – | 0.0 | 2.0 | 5.3 | 12.5 | 0.2 | 0.2 | – | – |
| Virginia WadeOpponent · won 1 of 6 | 6 | 0.2 | – | – | 0.5 | 1.8 | 9.2 | 13.0 | 0.3 | 0.5 | – | – |
| Anne WhiteOpponent · won 2 of 5 | 5 | 0.4 | – | – | 1.2 | 1.4 | 12.6 | 13.8 | 0.4 | 0.2 | – | – |
| Betty StoveOpponent · won 1 of 5 | 5 | 0.2 | – | – | 0.6 | 1.8 | 9.6 | 13.8 | 0.8 | – | – | – |
| Carling Bassett SegusoOpponent · won 2 of 5 | 5 | 0.4 | 0.2 | 0.2 | 0.8 | 1.4 | 8.6 | 11.2 | 0.0 | – | – | – |
| Kathy JordanOpponent · won 1 of 5 | 5 | 0.2 | – | – | 0.6 | 1.6 | 6.8 | 11.8 | 0.2 | 0.2 | – | – |
| Marcella MeskerOpponent · won 4 of 5 | 5 | 0.8 | – | – | 1.4 | 0.4 | 11.0 | 7.8 | 0.2 | 0.2 | – | – |
| Mary Lou PiatekOpponent · won 3 of 5 | 5 | 0.6 | – | – | 1.4 | 1.0 | 11.8 | 10.2 | 0.2 | – | – | – |
| Mima JausovecOpponent · won 1 of 5 | 5 | 0.2 | – | – | 0.6 | 1.6 | 9.6 | 12.6 | 0.8 | 0.2 | – | – |
| Sue BarkerOpponent · won 3 of 5 | 5 | 0.6 | – | – | 1.2 | 1.0 | 10.0 | 8.8 | 0.0 | – | – | – |
| Tanya HarfordOpponent · won 2 of 5 | 5 | 0.4 | 0.2 | 0.2 | 1.0 | 1.2 | 9.6 | 10.2 | 0.2 | 0.2 | – | – |
| Terry HolladayOpponent · won 3 of 5 | 5 | 0.6 | 0.2 | 0.2 | 1.6 | 0.8 | 12.6 | 8.0 | 0.4 | – | – | – |
| Zina GarrisonOpponent · won 1 of 5 | 5 | 0.2 | – | – | 0.6 | 1.8 | 8.4 | 12.0 | 0.4 | 0.2 | – | – |
| Anna Maria FernandezOpponent · won 4 of 4 | 4 | 1.0 | – | – | 2.0 | 0.3 | 13.0 | 6.0 | 0.0 | – | – | – |
| Anne SmithOpponent · won 0 of 4 | 4 | 0.0 | – | – | 0.3 | 2.0 | 6.3 | 12.8 | 0.0 | – | – | – |
| Barbara PotterOpponent · won 2 of 4 | 4 | 0.5 | – | – | 1.0 | 1.5 | 11.0 | 12.0 | 0.5 | 0.3 | – | – |
| Florenta MihaiOpponent · won 2 of 4 | 4 | 0.5 | – | – | 1.3 | 1.0 | 11.3 | 10.0 | 0.0 | – | – | – |
| Jo DurieOpponent · won 1 of 4 | 4 | 0.3 | – | – | 1.0 | 1.5 | 9.0 | 11.3 | 0.0 | – | – | – |
| Julie HarringtonOpponent · won 3 of 4 | 4 | 0.8 | – | – | 1.8 | 0.5 | 13.5 | 8.5 | 0.0 | 0.5 | – | 0.3 |
| Kathy HorvathOpponent · won 1 of 4 | 4 | 0.3 | – | – | 0.8 | 1.8 | 11.3 | 14.3 | 0.5 | – | – | – |
| Laura DupontOpponent · won 0 of 4 | 4 | 0.0 | – | – | 0.5 | 2.0 | 11.3 | 13.5 | 0.3 | – | – | – |
| Lisa Bonder KreissOpponent · won 0 of 4 | 4 | 0.0 | – | – | 0.5 | 2.0 | 8.0 | 13.8 | 0.3 | 0.3 | – | – |
| Manuela Maleeva FragniereOpponent · won 0 of 4 | 4 | 0.0 | – | – | 0.0 | 2.0 | 5.3 | 12.3 | 0.0 | 0.5 | – | – |
| Pam ShriverOpponent · won 0 of 4 | 4 | 0.0 | – | – | 0.0 | 2.0 | 4.5 | 12.0 | 0.0 | – | – | – |
| Regina MarsikovaOpponent · won 0 of 4 | 4 | 0.0 | – | – | 0.0 | 2.0 | 5.0 | 12.3 | 0.0 | 0.3 | – | – |
| Renata TomanovaOpponent · won 3 of 4 | 4 | 0.8 | – | – | 1.5 | 0.8 | 12.0 | 9.5 | 0.5 | – | – | – |
| Wendy WhiteOpponent · won 1 of 4 | 4 | 0.3 | – | – | 1.0 | 1.5 | 10.0 | 12.8 | 0.0 | – | – | – |
| Andrea JaegerOpponent · won 0 of 3 | 3 | 0.0 | – | – | 0.0 | 2.0 | 3.0 | 12.0 | 0.0 | 0.7 | – | – |
| Andrea LeandOpponent · won 2 of 3 | 3 | 0.7 | – | – | 1.3 | 1.3 | 12.3 | 13.7 | 0.7 | – | – | – |
| Betty Ann GrubbOpponent · won 3 of 3 | 3 | 1.0 | – | – | 2.0 | 0.3 | 13.7 | 8.0 | 0.0 | – | – | – |
| Caroline StollOpponent · won 1 of 3 | 3 | 0.3 | – | – | 0.7 | 1.3 | 8.3 | 10.3 | 0.3 | – | – | – |
| Carrie MeyerOpponent · won 3 of 3 | 3 | 1.0 | – | – | 2.0 | 0.0 | 12.3 | 7.0 | 0.3 | – | – | – |
| Catarina Lindqvist RyanOpponent · won 1 of 3 | 3 | 0.3 | – | – | 1.3 | 1.3 | 13.0 | 12.0 | 0.3 | 0.3 | – | – |
| Claudia MonteiroOpponent · won 3 of 3 | 3 | 1.0 | – | – | 2.0 | 0.3 | 13.3 | 8.3 | 0.0 | – | – | – |
| Corinne VanierOpponent · won 3 of 3 | 3 | 1.0 | – | – | 2.0 | 0.0 | 12.3 | 5.3 | 0.3 | 0.3 | – | – |
| Cynthia DoernerOpponent · won 1 of 3 | 3 | 0.3 | – | – | 1.0 | 1.3 | 11.7 | 13.3 | 0.7 | – | – | – |
| Diane DesforOpponent · won 2 of 3 | 3 | 0.7 | – | – | 1.3 | 1.3 | 13.0 | 12.7 | 0.3 | – | – | – |
| Glynis ColesOpponent · won 0 of 3 | 3 | 0.0 | – | – | 0.7 | 2.0 | 9.3 | 13.3 | 0.0 | – | – | – |
| Hana MandlikovaOpponent · won 0 of 3 | 3 | 0.0 | – | – | 0.3 | 2.0 | 8.3 | 13.7 | 0.0 | – | – | – |
| Helena SukovaOpponent · won 2 of 3 | 3 | 0.7 | – | – | 1.7 | 1.0 | 13.7 | 10.7 | 0.3 | – | – | – |
| Jane StrattonOpponent · won 2 of 3 | 3 | 0.7 | – | – | 1.3 | 1.0 | 12.0 | 10.7 | 0.0 | – | – | – |
| Jennifer MundelOpponent · won 3 of 3 | 3 | 1.0 | – | – | 2.0 | 0.0 | 12.0 | 3.0 | 0.0 | – | – | – |
| Joanne RussellOpponent · won 2 of 3 | 3 | 0.7 | – | – | 1.3 | 1.0 | 12.3 | 11.3 | 0.0 | – | – | – |
| Judy ChalonerOpponent · won 1 of 3 | 3 | 0.3 | – | – | 1.0 | 1.3 | 12.0 | 13.7 | 0.0 | – | – | – |
Wins-losses for Vermaak. Tap a rival for the full head to head.
Stats from official league and public sports feeds. Updated hourly. Tennis history by Jeff Sackmann / Tennis Abstract (CC BY-NC-SA 4.0). Career and honours from Wikidata (CC0).
