H2H data updated: 2026-09-13 00:00 UTC
Yvonne Vermaak holds a 4–1 lead over Patricia Medrado in their WTA head-to-head. Across 5 main-draw meetings, Yvonne Vermaak leads 2–1 on hard courts and 1–0 on clay. Most recently, Patricia Medrado won the 1986 Boca Raton round of 64 6-3 3-6 6-3.
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| Player | Score | Player | Match Data | Date | Round | Tournament | Category | Surface |
|---|---|---|---|---|---|---|---|---|
| Patricia Medrado | 6-3 3-6 6-3 | Yvonne Vermaak | Match data | Feb 12, 1986* | R64 | Boca Raton | WTA 250 | Hard |
| Yvonne Vermaak | 6-1 6-4 | Patricia Medrado | Match data | Jun 15, 1983* | R64 | Eastbourne Open | WTA 250 | Grass |
| Yvonne Vermaak | 6-3 6-4 | Patricia Medrado | Match data | May 20, 1982* | R32 | Berlin Open | WTA 500 | Clay |
| Yvonne Vermaak | 6-4 6-3 | Patricia Medrado | Match data | Aug 26, 1981* | R64 | Mahwah | WTA 250 | Hard |
| Yvonne Vermaak | 6-2 6-1 | Patricia Medrado | Match data | Sep 16, 1978* | QF | San Antonio | WTA 250 | Hard |
Estimated match date where the exact historical date is unavailable. Arrows show an edition's recorded category and documented modern equivalent; unresolved editions keep their recorded category. Asterisked totals include editions mapped from documented historical predecessor categories. Mapping details.
| Player | Current | Peak | Pts | Elo | W | L | Win % | GS | 1000 including documented historical predecessor categories | Finals | 500 including documented historical predecessor categories | 250 including documented historical predecessor categories | Titles |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Yvonne Vermaak | #558 | #38 | 10 | 1,892 | 239 | 249 | 49.0% | 0 | 0 | 0 | 0 | 5 | 5 |
| Patricia Medrado | #359 | #67 | 9 | 1,836 | 152 | 163 | 48.3% | 0 | 0 | 0 | 0 | 10 | 10 |
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 | Yvonne Vermaak | Patricia Medrado | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 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 | 1975 | 3–1 | 75.0% | — | 1,535 | 0 | 0 |
| 19 | 1976 | 8–10 | 44.4% | — | 1,606 | 0 | 1 | 1976 | 0–2 | 0.0% | — | 1,517 | 0 | 0 |
| 20 | 1977 | 20–14 | 58.8% | — | 1,765 | 0 | 2 | 1977 | 2–3 | 40.0% | — | 1,527 | 0 | 1 |
| 21 | 1978 | 29–23 | 55.8% | — | 1,791 | 0 | 2 | 1978 | 6–11 | 35.3% | — | 1,582 | 0 | 1 |
| 22 | 1979 | 15–23 | 39.5% | — | 1,779 | 0 | 2 | 1979 | 3–6 | 33.3% | — | 1,599 | 0 | 1 |
| 23 | 1980 | 19–18 | 51.4% | — | 1,741 | 0 | 2 | 1980 | 22–10 | 68.8% | — | 1,647 | 0 | 4 |
| 24 | 1981 | 19–28 | 40.4% | — | 1,719 | 0 | 2 | 1981 | 38–20 | 65.5% | — | 1,738 | 0 | 8 |
| 25 | 1982 | 36–27 | 57.1% | — | 1,820 | 0 | 2 | 1982 | 33–25 | 56.9% | — | 1,778 | 0 | 10 |
| 26 | 1983 | 33–26 | 55.9% | — | 1,754 | 0 | 4 | 1983 | 4–18 | 18.2% | — | 1,576 | 0 | 10 |
| 27 | 1984 | 29–28 | 50.9% | #41 | 1,800 | 0 | 5 | 1984 | 11–15 | 42.3% | #108 | 1,588 | 0 | 10 |
| 28 | 1985 | 8–21 | 27.6% | #41 | 1,604 | 0 | 5 | 1985 | 8–14 | 36.4% | #108 | 1,542 | 0 | 10 |
| 29 | 1986 | 6–11 | 35.3% | #104 | 1,565 | 0 | 5 | 1986 | 12–14 | 46.2% | #76 | 1,561 | 0 | 10 |
| 30 | 1987 | 1–3 | 25.0% | #201 | 1,558 | 0 | 5 | 1987 | 6–13 | 31.6% | #117 | 1,550 | 0 | 10 |
| 31 | 1988 | 0–1 | 0.0% | #287 | 1,541 | 0 | 5 | 1988 | 4–11 | 26.7% | #180 | 1,473 | 0 | 10 |
Seasons are aligned by the age each player spent most of that calendar year. Results cover completed main-draw matches. Bold green marks the higher win percentage when both players have at least 5 matches on that surface at the aligned age.
| Age | Yvonne Vermaak | Patricia Medrado | ||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Yr | Hard | Clay | Grass | Carpet | Yr | Hard | Clay | Grass | Carpet | |||||||||||||||||||||||||
| W | L | M | Win % | W | L | M | Win % | W | L | M | Win % | W | L | M | Win % | W | L | M | Win % | W | L | M | Win % | W | L | M | Win % | W | L | M | Win % | |||
| 16 | 1973 | 0 | 2 | 2 | 0.0% | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 17 | 1974 | 1 | 2 | 3 | 33.3% | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 18 | 1975 | 4 | 3 | 7 | 57.1% | 7 | 4 | 11 | 63.6% | 3 | 4 | 7 | 42.9% | — | — | — | — | 1975 | — | — | — | — | 3 | 1 | 4 | 75.0% | — | — | — | — | — | — | — | — |
| 19 | 1976 | 1 | 1 | 2 | 50.0% | 7 | 6 | 13 | 53.8% | 0 | 2 | 2 | 0.0% | 0 | 1 | 1 | 0.0% | 1976 | — | — | — | — | 0 | 2 | 2 | 0.0% | — | — | — | — | — | — | — | — |
| 20 | 1977 | 3 | 2 | 5 | 60.0% | 6 | 7 | 13 | 46.2% | 8 | 2 | 10 | 80.0% | 3 | 3 | 6 | 50.0% | 1977 | 1 | 2 | 3 | 33.3% | — | — | — | — | — | — | — | — | 0 | 1 | 1 | 0.0% |
| 21 | 1978 | 13 | 7 | 20 | 65.0% | 2 | 2 | 4 | 50.0% | 8 | 4 | 12 | 66.7% | 6 | 10 | 16 | 37.5% | 1978 | 3 | 5 | 8 | 37.5% | 3 | 3 | 6 | 50.0% | — | — | — | — | 0 | 3 | 3 | 0.0% |
| 22 | 1979 | 4 | 6 | 10 | 40.0% | 4 | 4 | 8 | 50.0% | 5 | 4 | 9 | 55.6% | 2 | 9 | 11 | 18.2% | 1979 | 1 | 1 | 2 | 50.0% | 2 | 1 | 3 | 66.7% | 0 | 1 | 1 | 0.0% | 0 | 2 | 2 | 0.0% |
| 23 | 1980 | 2 | 5 | 7 | 28.6% | 9 | 5 | 14 | 64.3% | 4 | 4 | 8 | 50.0% | 4 | 4 | 8 | 50.0% | 1980 | — | — | — | — | 9 | 8 | 17 | 52.9% | — | — | — | — | — | — | — | — |
| 24 | 1981 | 7 | 9 | 16 | 43.8% | 11 | 9 | 20 | 55.0% | 0 | 1 | 1 | 0.0% | 1 | 9 | 10 | 10.0% | 1981 | 6 | 5 | 11 | 54.5% | 10 | 9 | 19 | 52.6% | — | — | — | — | 0 | 1 | 1 | 0.0% |
| 25 | 1982 | 4 | 4 | 8 | 50.0% | 13 | 7 | 20 | 65.0% | 9 | 6 | 15 | 60.0% | 10 | 10 | 20 | 50.0% | 1982 | 2 | 6 | 8 | 25.0% | 27 | 9 | 36 | 75.0% | 1 | 1 | 2 | 50.0% | 3 | 9 | 12 | 25.0% |
| 26 | 1983 | 14 | 4 | 18 | 77.8% | 7 | 8 | 15 | 46.7% | 8 | 5 | 13 | 61.5% | 4 | 9 | 13 | 30.8% | 1983 | 2 | 7 | 9 | 22.2% | 2 | 6 | 8 | 25.0% | 0 | 2 | 2 | 0.0% | 0 | 3 | 3 | 0.0% |
| 27 | 1984 | 12 | 7 | 19 | 63.2% | 7 | 8 | 15 | 46.7% | 8 | 6 | 14 | 57.1% | 2 | 7 | 9 | 22.2% | 1984 | 3 | 5 | 8 | 37.5% | 8 | 7 | 15 | 53.3% | 0 | 2 | 2 | 0.0% | 0 | 1 | 1 | 0.0% |
| 28 | 1985 | 5 | 8 | 13 | 38.5% | 1 | 4 | 5 | 20.0% | 1 | 3 | 4 | 25.0% | 1 | 6 | 7 | 14.3% | 1985 | 1 | 5 | 6 | 16.7% | 4 | 7 | 11 | 36.4% | 0 | 1 | 1 | 0.0% | — | — | — | — |
| 29 | 1986 | 1 | 2 | 3 | 33.3% | 4 | 6 | 10 | 40.0% | 1 | 3 | 4 | 25.0% | — | — | — | — | 1986 | 4 | 6 | 10 | 40.0% | 8 | 6 | 14 | 57.1% | 0 | 1 | 1 | 0.0% | 0 | 1 | 1 | 0.0% |
| 30 | 1987 | 1 | 1 | 2 | 50.0% | 0 | 2 | 2 | 0.0% | — | — | — | — | — | — | — | — | 1987 | 1 | 4 | 5 | 20.0% | 5 | 9 | 14 | 35.7% | — | — | — | — | — | — | — | — |
| 31 | 1988 | 0 | 1 | 1 | 0.0% | — | — | — | — | — | — | — | — | — | — | — | — | 1988 | 1 | 3 | 4 | 25.0% | 3 | 7 | 10 | 30.0% | 0 | 1 | 1 | 0.0% | — | — | — | — |
| Career | — | 72 | 64 | 136 | 52.9% | 78 | 72 | 150 | 52.0% | 55 | 44 | 99 | 55.6% | 33 | 68 | 101 | 32.7% | — | 25 | 49 | 74 | 33.8% | 84 | 75 | 159 | 52.8% | 1 | 9 | 10 | 10.0% | 3 | 21 | 24 | 12.5% |
Seasons are aligned by the age each player spent most of that calendar year. Metrics use eligible main-draw results; point statistics use matches with detailed data. Bold green marks the stronger value when both underlying samples are sufficient. Lower is better for Schedule because a negative value means a tougher schedule. Career Schedule is normalized per 100 matches.
| Age | Yvonne Vermaak | Patricia Medrado | ||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Yr | Elo | P+ | Serve+ | Return+ | PD | TPW% | Hard Elo | Clay Elo | Grass Elo | Set Win % | Set Margin | Dec. Set | Tiebreak | Pressure+ | Schedule | Yr | Elo | P+ | Serve+ | Return+ | PD | TPW% | Hard Elo | Clay Elo | Grass Elo | Set Win % | Set Margin | Dec. Set | Tiebreak | Pressure+ | Schedule | |
| 16 | 1973 | 1496 | 101.8 | — | — | — | — | — | — | — | 20.0% | -3.20 | 0–1 | — | — | -0.39 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 17 | 1974 | 1489 | 99.2 | — | — | — | — | +44 | — | — | 42.9% | -0.71 | 0–1 | — | — | +0.69 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 18 | 1975 | 1599 | 120.1 | — | — | — | — | +53 | -2 | -47 | 57.1% | +0.46 | 3–6 (33%) | 3–0 (100%) | 100.2 | +2.43 | 1975 | 1535 | 102.4 | — | — | — | — | — | +33 | — | 75.0% | +1.25 | — | — | — | +1.01 |
| 19 | 1976 | 1607 | 119.9 | — | — | — | — | -10 | +40 | — | 48.8% | +0.09 | 2–5 (29%) | 1–3 (25%) | — | +0.96 | 1976 | 1517 | 92.1 | — | — | — | — | — | — | — | 0.0% | -4.25 | — | — | — | -0.02 |
| 20 | 1977 | 1765 | 138.0 | — | — | — | — | -79 | -79 | -75 | 58.1% | +0.41 | 3–3 (50%) | 6–5 (55%) | 102.4 | +0.27 | 1977 | 1528 | 97.0 | — | — | — | — | +38 | — | — | 33.3% | -2.22 | 0–1 | 1–0 | — | +0.68 |
| 21 | 1978 | 1791 | 135.3 | — | — | — | — | +3 | -132 | -30 | 52.6% | +0.33 | 8–6 (57%) | 2–6 (25%) | 99.2 | +2.99 | 1978 | 1582 | 115.6 | — | — | — | — | +3 | -32 | — | 36.6% | -1.05 | 5–2 (71%) | — | — | -0.14 |
| 22 | 1979 | 1780 | 155.2 | — | — | — | — | -44 | -74 | +25 | 40.5% | -0.50 | 4–4 (50%) | 1–2 (33%) | 99.0 | -4.03 | 1979 | 1600 | 122.4 | — | — | — | — | -32 | +22 | — | 40.9% | -1.45 | 1–3 (25%) | 5–0 (100%) | 102.1 | -0.16 |
| 23 | 1980 | 1742 | 138.8 | — | — | — | — | -89 | +32 | +50 | 52.5% | +0.26 | 2–4 (33%) | 4–3 (57%) | 99.5 | -4.96 | 1980 | 1647 | 127.0 | — | — | — | — | — | -68 | — | 64.9% | +1.30 | 6–4 (60%) | 1–4 (20%) | 98.0 | +0.78 |
| 24 | 1981 | 1720 | 143.5 | — | — | — | — | -64 | +96 | — | 43.1% | -0.39 | 4–6 (40%) | 1–5 (17%) | 96.9 | -2.78 | 1981 | 1739 | 134.1 | — | — | — | — | -124 | -50 | — | 63.3% | +1.20 | 7–7 (50%) | 6–9 (40%) | 96.5 | +2.58 |
| 25 | 1982 | 1820 | 142.9 | — | — | — | — | -77 | +69 | -9 | 55.2% | +0.06 | 11–10 (52%) | 9–10 (47%) | 99.8 | -3.53 | 1982 | 1779 | 140.8 | — | — | — | — | -197 | +94 | — | 56.6% | +0.45 | 6–11 (35%) | 7–3 (70%) | 99.2 | -1.37 |
| 26 | 1983 | 1755 | 138.0 | — | — | — | — | +7 | +104 | +97 | 55.4% | +0.20 | 10–11 (48%) | 7–3 (70%) | 100.0 | +1.14 | 1983 | 1577 | 104.0 | — | — | — | — | -93 | +205 | — | 24.0% | -1.80 | 2–4 (33%) | 1–3 (25%) | 94.8 | +0.53 |
| 27 | 1984 | 1801 | 134.8 | — | — | — | — | -65 | -14 | +95 | 53.1% | +0.15 | 5–11 (31%) | 7–8 (47%) | 94.0 | -0.64 | 1984 | 1588 | 120.4 | — | — | — | — | -112 | +162 | — | 48.3% | -0.34 | 0–6 (0%) | 5–3 (63%) | 95.2 | +0.36 |
| 28 | 1985 | 1605 | 125.4 | — | — | — | — | +10 | +114 | +210 | 37.7% | -0.97 | 1–10 (9%) | 0–1 | — | -0.99 | 1985 | 1542 | 114.5 | — | — | — | — | -92 | +100 | — | 39.1% | -0.22 | 0–2 | 1–3 (25%) | — | +0.78 |
| 29 | 1986 | 1565 | 105.1 | — | — | — | — | +19 | +86 | +196 | 36.8% | -0.87 | 2–2 (50%) | 0–1 | — | 0.00 | 1986 | 1562 | 123.2 | — | — | — | — | -82 | +112 | — | 49.2% | +0.11 | 5–8 (38%) | 5–2 (71%) | 99.4 | +1.15 |
| 30 | 1987 | 1558 | 108.1 | — | — | — | — | — | — | — | 25.0% | -2.38 | — | — | — | -0.56 | 1987 | 1551 | 107.8 | — | — | — | — | -107 | +50 | — | 39.1% | -0.48 | 2–6 (25%) | 3–1 (75%) | 97.0 | +0.64 |
| 31 | 1988 | 1542 | 94.0 | — | — | — | — | — | — | — | 0.0% | -4.00 | — | — | — | +0.11 | 1988 | 1473 | 104.6 | — | — | — | — | -66 | +64 | — | 31.4% | -1.20 | 2–3 (40%) | 1–1 | — | +1.44 |
| Career | — | 1892 | 141.9 | — | — | — | — | -33 | +33 | +34 | 50.0% | -0.05 | 55–80 (41%) | 41–47 (47%) | 93.1 | -1.91 | — | 1837 | 128.4 | — | — | — | — | -99 | +60 | — | 49.5% | +0.04 | 36–57 (39%) | 36–29 (55%) | 95.0 | +2.62 |
Each player's five most-played main-draw opponents. The current matchup is highlighted when it appears in a player's top five.
| Opponent | W | L | M | Last Played | H2H |
|---|---|---|---|---|---|
| Martina Navratilova | 0 | 14 | 14 | Jan 25, 1985 | H2H |
| Chris Evert | 0 | 11 | 11 | Feb 3, 1983 | H2H |
| Virginia Ruzici | 3 | 6 | 9 | Jun 29, 1983 | H2H |
| Wendy Turnbull | 1 | 6 | 7 | Feb 24, 1987 | H2H |
| Dianne Fromholtz | 2 | 5 | 7 | Jun 25, 1986 | H2H |
| Opponent | W | L | M | Last Played | H2H |
|---|---|---|---|---|---|
| Laura Arraya | 2 | 5 | 7 | Oct 9, 1986 | H2H |
| Claudia Monteiro | 7 | 0 | 7 | Feb 24, 1983 | H2H |
| Martina Navratilova | 0 | 5 | 5 | May 25, 1988 | H2H |
| Yvonne Vermaak | 1 | 4 | 5 | Feb 12, 1986 | H2H |
| Pilar Vasquez | 3 | 2 | 5 | Feb 3, 1984 | H2H |