H2H data updated: 2026-07-19 14:15 UTC
Mona Guerrant vs Yvonne Vermaak H2H: 1-0
Mona Guerrant holds a 1–0 lead over Yvonne Vermaak in their WTA head-to-head. Across 1 main-draw meeting, Mona Guerrant leads 1–0 on clay. Most recently, Mona Guerrant won the 1977 US Open first round 7-6 2-6 6-1.
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USA
Age 77
Right-Handed
H2H
1
–
0
1 main draw meetings
RSA
Age 69
Right-Handed
155 cm / 5'1"
H2H Match Log
| Date | Tournament | Category | Round | Surface | Winner | Score | Loser | Match |
|---|---|---|---|---|---|---|---|---|
| Sep 2, 1977* | US Open | Grand Slam | R128 | Clay | Mona Guerrant | 7-6 2-6 6-1 | Yvonne Vermaak | 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Mona Guerrant | — | — | — | 1,939 | 123 | 117 | 51.2% | 0 | 0 | 0 | 0 | 3 | 3 |
| Yvonne Vermaak | #558 | #38 | 10 | 1,891 | 239 | 249 | 49.0% | 0 | 0 | 0 | 0 | 5 | 5 |
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.
| Age | Mona Guerrant | Yvonne Vermaak | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Yr | W-L | Win % | Rank | Elo | GS | Titles | Yr | W-L | Win % | Rank | Elo | GS | Titles | |
| 16 | — | — | — | — | — | — | — | 1973 | 0–2 | 0.0% | — | 1,495 | 0 | 0 |
| 17 | — | — | — | — | — | — | — | 1974 | 1–2 | 33.3% | — | 1,489 | 0 | 0 |
| 18 | — | — | — | — | — | — | — | 1975 | 15–12 | 55.6% | — | 1,599 | 0 | 0 |
| 19 | — | — | — | — | — | — | — | 1976 | 8–10 | 44.4% | — | 1,607 | 0 | 1 |
| 20 | 1969 | 1–1 | 50.0% | — | 1,500 | 0 | 0 | 1977 | 20–14 | 58.8% | — | 1,766 | 0 | 2 |
| 21 | 1970 | 2–3 | 40.0% | — | 1,508 | 0 | 0 | 1978 | 29–23 | 55.8% | — | 1,797 | 0 | 2 |
| 22 | 1971 | 3–8 | 27.3% | — | 1,521 | 0 | 0 | 1979 | 15–23 | 39.5% | — | 1,781 | 0 | 2 |
| 23 | 1972 | 28–22 | 56.0% | — | 1,735 | 0 | 1 | 1980 | 19–18 | 51.4% | — | 1,740 | 0 | 2 |
| 24 | 1973 | 17–19 | 47.2% | — | 1,780 | 0 | 2 | 1981 | 19–28 | 40.4% | — | 1,721 | 0 | 2 |
| 25 | 1974 | 12–14 | 46.2% | — | 1,767 | 0 | 2 | 1982 | 36–27 | 57.1% | — | 1,819 | 0 | 2 |
| 26 | 1975 | 12–12 | 50.0% | — | 1,897 | 0 | 2 | 1983 | 33–26 | 55.9% | — | 1,754 | 0 | 4 |
| 27 | 1976 | 15–14 | 51.7% | — | 1,893 | 0 | 2 | 1984 | 29–28 | 50.9% | #41 | 1,801 | 0 | 5 |
| 28 | 1977 | 14–9 | 60.9% | — | 1,886 | 0 | 2 | 1985 | 8–21 | 27.6% | #41 | 1,605 | 0 | 5 |
| 29 | 1978 | 5–11 | 31.2% | — | 1,804 | 0 | 2 | 1986 | 6–11 | 35.3% | #104 | 1,565 | 0 | 5 |
| 30 | — | — | — | — | — | — | — | 1987 | 1–3 | 25.0% | #201 | 1,558 | 0 | 5 |
| 31 | 1980 | 14–4 | 77.8% | — | 1,809 | 0 | 3 | 1988 | 0–1 | 0.0% | #287 | 1,542 | 0 | 5 |