H2H data updated: 2026-09-13 00:00 UTC

Yvonne Vermaak vs Iris Riedel Kuhn H2H: 1-0

Yvonne Vermaak holds a 1–0 lead over Iris Riedel Kuhn in their WTA head-to-head. Across 1 main-draw meeting, Yvonne Vermaak leads 1–0 on clay. Most recently, Yvonne Vermaak won the 1982 Perugia round of 64 6-4 6-4.

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Yvonne Vermaak
RSA Age 69 Right-Handed 155 cm / 5'1"
H2H
1 – 0
1 main-draw meetings
Iris Riedel Kuhn
FRG Age 72

H2H Match Log

PlayerScorePlayerMatch DataDateRoundTournamentCategorySurface
Yvonne Vermaak 6-4 6-4 Iris Riedel Kuhn Match data May 5, 1982* R64 Perugia WTA 250 Clay

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.

Career Comparison

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
Iris Riedel Kuhn — — — 1,845 104 96 52.0% 0 0 0 0 7 7

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 Yvonne Vermaak Iris Riedel Kuhn
YrW-LWin %RankEloGSTitles YrW-LWin %RankEloGSTitles
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 1972 1–2 33.3% — 1,484 0 0
19 1976 8–10 44.4% — 1,606 0 1 1973 0–1 0.0% — 1,479 0 0
20 1977 20–14 58.8% — 1,765 0 2 1974 2–4 33.3% — 1,490 0 0
21 1978 29–23 55.8% — 1,791 0 2 1975 16–13 55.2% — 1,684 0 0
22 1979 15–23 39.5% — 1,779 0 2 1976 10–15 40.0% — 1,679 0 0
23 1980 19–18 51.4% — 1,741 0 2 1977 13–14 48.1% — 1,706 0 0
24 1981 19–28 40.4% — 1,719 0 2 1978 13–10 56.5% — 1,694 0 1
25 1982 36–27 57.1% — 1,820 0 2 1979 5–9 35.7% — 1,685 0 1
26 1983 33–26 55.9% — 1,754 0 4 1980 28–9 75.7% — 1,820 0 4
27 1984 29–28 50.9% #41 1,800 0 5 1981 15–13 53.6% — 1,730 0 7
28 1985 8–21 27.6% #41 1,604 0 5 1982 1–6 14.3% — 1,627 0 7
29 1986 6–11 35.3% #104 1,565 0 5 — — — — — — —
30 1987 1–3 25.0% #201 1,558 0 5 — — — — — — —
31 1988 0–1 0.0% #287 1,541 0 5 — — — — — — —

Surface Results by Age

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 Iris Riedel Kuhn
Yr HardClayGrassCarpet Yr HardClayGrassCarpet
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% — — — — 1972 1 1 2 50.0% 0 1 1 0.0% — — — — — — — —
19 1976 1 1 2 50.0% 7 6 13 53.8% 0 2 2 0.0% 0 1 1 0.0% 1973 — — — — 0 1 1 0.0% — — — — — — — —
20 1977 3 2 5 60.0% 6 7 13 46.2% 8 2 10 80.0% 3 3 6 50.0% 1974 — — — — 2 4 6 33.3% — — — — — — — —
21 1978 13 7 20 65.0% 2 2 4 50.0% 8 4 12 66.7% 6 10 16 37.5% 1975 — — — — 14 10 24 58.3% 1 1 2 50.0% 1 2 3 33.3%
22 1979 4 6 10 40.0% 4 4 8 50.0% 5 4 9 55.6% 2 9 11 18.2% 1976 0 1 1 0.0% 6 7 13 46.2% 0 1 1 0.0% 4 6 10 40.0%
23 1980 2 5 7 28.6% 9 5 14 64.3% 4 4 8 50.0% 4 4 8 50.0% 1977 0 2 2 0.0% 13 9 22 59.1% 0 1 1 0.0% 0 2 2 0.0%
24 1981 7 9 16 43.8% 11 9 20 55.0% 0 1 1 0.0% 1 9 10 10.0% 1978 — — — — 5 5 10 50.0% 1 3 4 25.0% 2 2 4 50.0%
25 1982 4 4 8 50.0% 13 7 20 65.0% 9 6 15 60.0% 10 10 20 50.0% 1979 0 1 1 0.0% 3 5 8 37.5% 1 1 2 50.0% 0 1 1 0.0%
26 1983 14 4 18 77.8% 7 8 15 46.7% 8 5 13 61.5% 4 9 13 30.8% 1980 — — — — 25 7 32 78.1% — — — — 1 1 2 50.0%
27 1984 12 7 19 63.2% 7 8 15 46.7% 8 6 14 57.1% 2 7 9 22.2% 1981 — — — — 12 7 19 63.2% 0 1 1 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% 1982 — — — — 1 6 7 14.3% — — — — — — — —
29 1986 1 2 3 33.3% 4 6 10 40.0% 1 3 4 25.0% — — — — — — — — — — — — — — — — — — — — —
30 1987 1 1 2 50.0% 0 2 2 0.0% — — — — — — — — — — — — — — — — — — — — — — — — —
31 1988 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% — 1 5 6 16.7% 81 62 143 56.6% 3 8 11 27.3% 8 15 23 34.8%

Advanced Statistics Comparison by Age

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 Iris Riedel Kuhn
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 1972 1485 97.6 — — — — — — — 33.3% -1.33 — 1–0 — +0.37
19 1976 1607 119.9 — — — — -10 +40 — 48.8% +0.09 2–5 (29%) 1–3 (25%) — +0.96 1973 1479 104.1 — — — — — — — 0.0% -3.50 — — — -0.12
20 1977 1765 138.0 — — — — -79 -79 -75 58.1% +0.41 3–3 (50%) 6–5 (55%) 102.4 +0.27 1974 1491 113.8 — — — — — +14 — 45.5% -0.64 0–1 — — +0.12
21 1978 1791 135.3 — — — — +3 -132 -30 52.6% +0.33 8–6 (57%) 2–6 (25%) 99.2 +2.99 1975 1685 137.0 — — — — -42 +13 — 53.7% +0.22 7–6 (54%) 5–3 (63%) 104.4 -0.17
22 1979 1780 155.2 — — — — -44 -74 +25 40.5% -0.50 4–4 (50%) 1–2 (33%) 99.0 -4.03 1976 1680 125.4 — — — — -69 +22 — 41.4% -0.64 4–4 (50%) 1–0 — -0.74
23 1980 1742 138.8 — — — — -89 +32 +50 52.5% +0.26 2–4 (33%) 4–3 (57%) 99.5 -4.96 1977 1706 135.3 — — — — -154 +71 — 48.4% -0.23 4–4 (50%) 1–2 (33%) 99.3 -1.31
24 1981 1720 143.5 — — — — -64 +96 — 43.1% -0.39 4–6 (40%) 1–5 (17%) 96.9 -2.78 1978 1694 124.7 — — — — -99 -10 -173 58.5% +0.91 2–5 (29%) 1–1 — +2.71
25 1982 1820 142.9 — — — — -77 +69 -9 55.2% +0.06 11–10 (52%) 9–10 (47%) 99.8 -3.53 1979 1685 123.5 — — — — — +33 — 41.9% -1.35 2–3 (40%) 1–0 — -1.31
26 1983 1755 138.0 — — — — +7 +104 +97 55.4% +0.20 10–11 (48%) 7–3 (70%) 100.0 +1.14 1980 1820 140.6 — — — — — +136 — 72.7% +1.95 5–4 (56%) 1–3 (25%) 99.3 +1.28
27 1984 1801 134.8 — — — — -65 -14 +95 53.1% +0.15 5–11 (31%) 7–8 (47%) 94.0 -0.64 1981 1730 122.0 — — — — — +227 — 51.7% -0.26 4–2 (67%) 3–0 (100%) 103.5 -0.12
28 1985 1605 125.4 — — — — +10 +114 +210 37.7% -0.97 1–10 (9%) 0–1 — -0.99 1982 1627 97.1 — — — — — +128 — 29.4% -1.12 0–3 (0%) 0–2 — +0.33
29 1986 1565 105.1 — — — — +19 +86 +196 36.8% -0.87 2–2 (50%) 0–1 — 0.00 — — — — — — — — — — — — — — — —
30 1987 1558 108.1 — — — — — — — 25.0% -2.38 — — — -0.56 — — — — — — — — — — — — — — — —
31 1988 1542 94.0 — — — — — — — 0.0% -4.00 — — — +0.11 — — — — — — — — — — — — — — — —
Career — 1892 141.9 — — — — -33 +33 +34 50.0% -0.05 55–80 (41%) 41–47 (47%) 93.1 -1.91 — 1845 136.1 — — — — -86 +85 -173 52.5% +0.14 28–32 (47%) 14–11 (56%) 99.6 +0.53

Career Rivalries

Each player's five most-played main-draw opponents. The current matchup is highlighted when it appears in a player's top five.