H2H data updated: 2026-07-19 14:15 UTC
Yvonne Vermaak vs Gwynn Sammel H2H: 1-0
Yvonne Vermaak holds a 1–0 lead over Gwynn Sammel in their WTA head-to-head. Across 1 main-draw meeting, Yvonne Vermaak leads 1–0 on hard courts. Most recently, Yvonne Vermaak won the 1977 Johannesburg third round 6-3 6-4.
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H2H Match Log
| Date | Tournament | Category | Round | Surface | Winner | Score | Loser | Match |
|---|---|---|---|---|---|---|---|---|
| Dec 4, 1977* | Johannesburg | WTA 250 | R32 | Hard | Yvonne Vermaak | 6-3 6-4 | Gwynn Sammel | Match data |
* Estimated match date where the exact historical date is unavailable.
Career Comparison
| Player | Current | Peak | Pts | Elo | W | L | Win % | GS | 1000 | Finals | 500 | 250 | Titles |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Yvonne Vermaak | #558 | #38 | 10 | 1,891 | 239 | 249 | 49.0% | 0 | 0 | 0 | 0 | 5 | 5 |
| Gwynn Sammel | — | — | — | 1,531 | 14 | 25 | 35.9% | 0 | 0 | 0 | 0 | 0 | 0 |
Career Progression by Age
Seasons are aligned by the age each player spent most of that calendar year. GS and Titles are cumulative career totals through that season.
| Yvonne Vermaak | Gwynn Sammel | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Yr | W-L | Win % | Rank | Elo | GS | Titles | Yr | W-L | Win % | Rank | Elo | GS | Titles |
| 1973 | 0–2 | 0.0% | — | 1,495 | 0 | 0 | 1973 | 1–2 | 33.3% | — | 1,516 | 0 | 0 |
| 1974 | 1–2 | 33.3% | — | 1,489 | 0 | 0 | 1974 | 4–13 | 23.5% | — | 1,419 | 0 | 0 |
| 1975 | 15–12 | 55.6% | — | 1,599 | 0 | 0 | 1975 | 0–1 | 0.0% | — | 1,410 | 0 | 0 |
| 1976 | 8–10 | 44.4% | — | 1,607 | 0 | 1 | 1977 | 5–5 | 50.0% | — | 1,472 | 0 | 0 |
| 1977 | 20–14 | 58.8% | — | 1,766 | 0 | 2 | 1978 | 3–3 | 50.0% | — | 1,481 | 0 | 0 |
| 1978 | 29–23 | 55.8% | — | 1,797 | 0 | 2 | 1979 | 1–1 | 50.0% | — | 1,492 | 0 | 0 |
| 1979 | 15–23 | 39.5% | — | 1,781 | 0 | 2 | — | — | — | — | — | — | — |
| 1980 | 19–18 | 51.4% | — | 1,740 | 0 | 2 | — | — | — | — | — | — | — |
| 1981 | 19–28 | 40.4% | — | 1,721 | 0 | 2 | — | — | — | — | — | — | — |
| 1982 | 36–27 | 57.1% | — | 1,819 | 0 | 2 | — | — | — | — | — | — | — |
| 1983 | 33–26 | 55.9% | — | 1,754 | 0 | 4 | — | — | — | — | — | — | — |
| 1984 | 29–28 | 50.9% | #41 | 1,801 | 0 | 5 | — | — | — | — | — | — | — |
| 1985 | 8–21 | 27.6% | #41 | 1,605 | 0 | 5 | — | — | — | — | — | — | — |
| 1986 | 6–11 | 35.3% | #104 | 1,565 | 0 | 5 | — | — | — | — | — | — | — |
| 1987 | 1–3 | 25.0% | #201 | 1,558 | 0 | 5 | — | — | — | — | — | — | — |
| 1988 | 0–1 | 0.0% | #287 | 1,542 | 0 | 5 | — | — | — | — | — | — | — |