H2H data updated: 2026-09-12 00:00 UTC

Claudia Porwik vs Ann Grossman H2H: 1-0

Claudia Porwik holds a 1–0 lead over Ann Grossman in their WTA head-to-head. Across 1 main-draw meeting, Claudia Porwik leads 1–0 on hard courts. Most recently, Claudia Porwik won the 1989 Oklahoma round of 16 6-3 6-4.

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Claudia Porwik
GER Age 57
H2H
1 – 0
1 main-draw meetings
Ann Grossman
USA Age 55 Right-Handed 180 cm / 5'11"

H2H Match Log

PlayerScorePlayerMatch DataDateRoundTournamentCategorySurface
Claudia Porwik #148 6-3 6-4 Ann Grossman #55 Match data Mar 3, 1989* R16 Oklahoma 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.

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
Claudia Porwik #579 #29 148 1,786 114 146 43.8% 0 0 0 0 0 0
Ann Grossman #343 #29 384 1,887 187 185 50.3% 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.

Age Claudia Porwik Ann Grossman
YrW-LWin %RankEloGSTitles YrW-LWin %RankEloGSTitles
16 — — — — — — — 1987 0–1 0.0% #378 1,497 0 0
17 1986 6–5 54.5% #96 1,577 0 0 1988 15–12 55.6% #48 1,699 0 0
18 1987 13–19 40.6% #104 1,581 0 0 1989 23–20 53.5% #54 1,736 0 0
19 1988 11–16 40.7% #68 1,571 0 0 1990 23–22 51.1% #50 1,748 0 0
20 1989 19–18 51.4% #75 1,660 0 0 1991 12–19 38.7% #89 1,638 0 0
21 1990 18–17 51.4% #29 1,667 0 0 1992 23–17 57.5% #36 1,733 0 0
22 1991 14–20 41.2% #80 1,644 0 0 1993 30–19 61.2% #35 1,804 0 0
23 1992 12–18 40.0% #98 1,605 0 0 1994 27–21 56.2% #37 1,853 0 0
24 1993 13–20 39.4% #92 1,601 0 0 1995 12–19 38.7% #88 1,681 0 0
25 1994 0–1 0.0% #256 1,585 0 0 1996 10–14 41.7% #72 1,665 0 0
26 1995 4–7 36.4% #133 1,551 0 0 1997 10–17 37.0% #75 1,615 0 0
27 1996 4–5 44.4% #153 1,563 0 0 1998 2–4 33.3% #283 1,595 0 0

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 Claudia Porwik Ann Grossman
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 — — — — — — — — — — — — — — — — — 1987 0 1 1 0.0% — — — — — — — — — — — —
17 1986 3 3 6 50.0% 3 2 5 60.0% — — — — — — — — 1988 13 11 24 54.2% — — — — — — — — 2 1 3 66.7%
18 1987 4 7 11 36.4% 4 4 8 50.0% 1 4 5 20.0% 4 4 8 50.0% 1989 16 11 27 59.3% 7 6 13 53.8% 0 2 2 0.0% 0 1 1 0.0%
19 1988 7 6 13 53.8% 0 4 4 0.0% 4 4 8 50.0% 0 2 2 0.0% 1990 9 12 21 42.9% 12 7 19 63.2% 1 1 2 50.0% 1 2 3 33.3%
20 1989 15 13 28 53.6% 3 3 6 50.0% 1 1 2 50.0% 0 1 1 0.0% 1991 4 11 15 26.7% 6 6 12 50.0% 1 1 2 50.0% 1 1 2 50.0%
21 1990 16 12 28 57.1% — — — — 0 2 2 0.0% 2 3 5 40.0% 1992 15 8 23 65.2% 5 6 11 45.5% — — — — 3 3 6 50.0%
22 1991 10 13 23 43.5% 1 3 4 25.0% 0 2 2 0.0% 3 2 5 60.0% 1993 21 12 33 63.6% 4 3 7 57.1% 1 1 2 50.0% 4 3 7 57.1%
23 1992 5 11 16 31.3% 0 2 2 0.0% 2 1 3 66.7% 5 4 9 55.6% 1994 16 10 26 61.5% 9 7 16 56.3% 2 1 3 66.7% 0 3 3 0.0%
24 1993 7 11 18 38.9% 2 2 4 50.0% 2 3 5 40.0% 2 4 6 33.3% 1995 5 10 15 33.3% 6 8 14 42.9% 1 1 2 50.0% — — — —
25 1994 0 1 1 0.0% — — — — — — — — — — — — 1996 8 9 17 47.1% 2 4 6 33.3% 0 1 1 0.0% — — — —
26 1995 3 4 7 42.9% — — — — 0 2 2 0.0% 1 1 2 50.0% 1997 3 9 12 25.0% 7 7 14 50.0% 0 1 1 0.0% — — — —
27 1996 3 2 5 60.0% 0 1 1 0.0% 1 1 2 50.0% 0 1 1 0.0% 1998 1 2 3 33.3% 1 2 3 33.3% — — — — — — — —
Career — 73 83 156 46.8% 13 21 34 38.2% 11 20 31 35.5% 17 22 39 43.6% — 111 106 217 51.2% 59 56 115 51.3% 6 9 15 40.0% 11 14 25 44.0%

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 Claudia Porwik Ann Grossman
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 — — — — — — — — — — — — — — — — 1987 1497 101.9 — — — — — — — 0.0% -4.00 — — — -0.15
17 1986 1577 117.2 — — — — +14 +33 — 50.0% -0.42 3–1 (75%) 3–1 (75%) 105.3 +0.65 1988 1699 133.9 — — — — +28 — — 54.1% +0.13 4–3 (57%) 0–5 (0%) 100.1 +0.16
18 1987 1582 120.5 — — — — -4 +32 -42 44.7% -0.46 4–8 (33%) 4–1 (80%) 97.8 +1.43 1989 1737 136.2 — — — — +43 -89 — 52.5% +0.05 8–7 (53%) 4–5 (44%) 101.2 -1.22
19 1988 1572 125.4 — — — — +20 -30 +14 41.4% -0.72 2–2 (50%) 5–2 (71%) 103.4 +0.38 1990 1749 136.3 — — — — -12 +8 — 51.0% +0.02 7–7 (50%) 2–4 (33%) — -1.48
20 1989 1661 127.0 — — — — 0 -72 — 52.9% +0.09 4–7 (36%) 2–3 (40%) 97.4 +0.85 1991 1638 126.7 — — — — -16 +89 — 44.3% +0.06 3–7 (30%) 2–6 (25%) 91.9 +0.49
21 1990 1667 133.5 — — — — +11 — — 52.5% +0.25 6–8 (43%) 5–2 (71%) 99.4 +1.00 1992 1733 132.9 — — — — +24 -9 — 52.9% -0.03 6–3 (67%) 6–1 (86%) 108.7 +1.73
22 1991 1645 123.9 — — — — +28 -98 — 42.7% -0.60 3–4 (43%) 5–4 (56%) 100.4 -1.33 1993 1805 140.5 — — — — +9 -60 — 59.6% +0.62 6–7 (46%) 6–3 (67%) 103.6 +0.77
23 1992 1606 119.1 — — — — +1 — -25 43.3% -0.63 4–5 (44%) 2–2 (50%) 97.3 +1.85 1994 1853 146.2 — — — — 0 -73 -249 53.6% -0.01 10–6 (63%) 5–2 (71%) 107.3 -1.02
24 1993 1601 124.1 — — — — -13 -41 +10 42.3% -0.62 3–4 (43%) 3–4 (43%) 97.9 -0.38 1995 1681 123.7 — — — — +38 +44 — 40.8% -0.46 4–5 (44%) 3–9 (25%) 92.7 +0.33
25 1994 1585 97.9 — — — — — — — 0.0% -3.50 — — — +0.19 1996 1666 130.2 — — — — +49 +8 — 42.9% -0.62 4–4 (50%) 0–2 — -0.99
26 1995 1551 111.6 — — — — +11 — — 44.4% +0.07 1–4 (20%) 1–4 (20%) 95.2 -0.10 1997 1615 123.7 — — — — +26 +98 — 38.6% -1.25 1–4 (20%) 2–2 (50%) 97.1 -0.41
27 1996 1564 110.4 — — — — +28 — — 55.0% +0.25 1–3 (25%) — — +0.74 1998 1595 103.2 — — — — +41 +76 — 33.3% -1.58 — 1–0 — +0.11
Career — 1787 129.2 — — — — +7 -22 -6 46.3% -0.33 31–46 (40%) 30–23 (57%) 98.7 +2.04 — 1888 140.3 — — — — +18 +6 -249 49.9% -0.10 53–53 (50%) 31–39 (44%) 99.5 -0.45

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.