H2H data updated: 2026-10-27 00:00 UTC

Mary Lou Piatek vs Beth Herr H2H: 1-4

Beth Herr holds a 4–1 lead over Mary Lou Piatek in their WTA head-to-head. Across 5 main-draw meetings, Beth Herr leads 3–0 on hard courts, while Mary Lou Piatek leads 1–0 on carpet. Most recently, Beth Herr won the 1988 US Open round of 128 6-3 1-6 6-2.

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Mary Lou Piatek
USA
H2H
1 – 4
5 main-draw meetings
Beth Herr
USA Age 62 Right-Handed 170 cm / 5'7"

H2H Match Log

PlayerScorePlayerMatch DataDateRoundTournamentCategorySurface
Beth Herr #102 6-3 1-6 6-2 Mary Lou Piatek Match data Aug 31, 1988* R128 US Open Grand Slam Hard
Beth Herr #59 6-2 6-2 Mary Lou Piatek Match data Sep 27, 1986* SF Tulsa WTA 250 Hard
Mary Lou Piatek 6-4 7-5 Beth Herr #42 Match data Sep 27, 1984* R32 New Orleans WTA 250 Carpet
Beth Herr 7-5 7-5 Mary Lou Piatek Match data Oct 13, 1983* R32 Tampa WTA 250 Hard
Beth Herr 4-6 6-1 6-2 Mary Lou Piatek Match data Jun 15, 1983* R64 Eastbourne Open WTA 250 Grass

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
Mary Lou Piatek — — — 1,938 157 207 43.1% 0 0 0 0 2 2
Beth Herr — #31 18 1,767 107 128 45.5% 0 0 0 0 1 1

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.

Mary Lou Piatek Beth Herr
YrW-LWin %RankEloGSTitles YrW-LWin %RankEloGSTitles
1978 0–1 0.0% — 1,499 0 0 1981 0–4 0.0% — 1,483 0 0
1979 3–5 37.5% — 1,547 0 0 1982 8–5 61.5% — 1,626 0 0
1980 20–13 60.6% — 1,762 0 0 1983 19–18 51.4% — 1,703 0 0
1981 30–22 57.7% — 1,874 0 1 1984 20–21 48.8% #39 1,699 0 0
1982 18–21 46.2% — 1,793 0 1 1985 17–23 42.5% — 1,630 0 0
1983 12–20 37.5% — 1,721 0 1 1986 22–15 59.5% #52 1,707 0 1
1984 18–20 47.4% — 1,704 0 2 1987 7–16 30.4% #126 1,583 0 1
1985 14–18 43.8% — 1,678 0 2 1988 5–10 33.3% #98 1,544 0 1
1986 8–15 34.8% — 1,618 0 2 1989 9–14 39.1% #132 1,540 0 1
1987 6–12 33.3% — 1,594 0 2 1990 0–2 0.0% #373 1,518 0 1
1988 6–16 27.3% — 1,542 0 2 — — — — — — —
1989 7–15 31.8% — 1,592 0 2 — — — — — — —
1990 8–11 42.1% — 1,611 0 2 — — — — — — —
1991 5–8 38.5% — 1,629 0 2 — — — — — — —
1992 1–8 11.1% — 1,560 0 2 — — — — — — —
1993 1–2 33.3% — 1,554 0 2 — — — — — — —

Surface Results by Career Season

Rows are aligned in career order because complete birth data is unavailable. 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.

Mary Lou Piatek Beth Herr
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 %
1978 — — — — — — — — — — — — 0 1 1 0.0% 1981 0 1 1 0.0% — — — — — — — — 0 3 3 0.0%
1979 1 1 2 50.0% 0 1 1 0.0% — — — — 2 3 5 40.0% 1982 7 3 10 70.0% 1 2 3 33.3% — — — — — — — —
1980 5 3 8 62.5% 3 1 4 75.0% 0 2 2 0.0% 12 7 19 63.2% 1983 4 4 8 50.0% 6 5 11 54.5% 5 5 10 50.0% 4 4 8 50.0%
1981 15 5 20 75.0% 6 4 10 60.0% 4 6 10 40.0% 5 7 12 41.7% 1984 13 5 18 72.2% 2 5 7 28.6% 1 3 4 25.0% 4 8 12 33.3%
1982 4 5 9 44.4% 0 3 3 0.0% 1 2 3 33.3% 13 11 24 54.2% 1985 11 13 24 45.8% 6 7 13 46.2% 0 3 3 0.0% — — — —
1983 5 6 11 45.5% 1 4 5 20.0% 0 2 2 0.0% 6 8 14 42.9% 1986 17 8 25 68.0% 0 3 3 0.0% 0 1 1 0.0% 5 3 8 62.5%
1984 9 8 17 52.9% 0 1 1 0.0% 5 6 11 45.5% 4 5 9 44.4% 1987 3 7 10 30.0% 0 3 3 0.0% 3 3 6 50.0% 1 3 4 25.0%
1985 7 11 18 38.9% 2 1 3 66.7% 1 2 3 33.3% 4 4 8 50.0% 1988 5 8 13 38.5% 0 1 1 0.0% 0 1 1 0.0% — — — —
1986 5 5 10 50.0% 0 2 2 0.0% 1 2 3 33.3% 2 6 8 25.0% 1989 9 12 21 42.9% 0 1 1 0.0% 0 1 1 0.0% — — — —
1987 3 5 8 37.5% 0 2 2 0.0% 0 2 2 0.0% 3 3 6 50.0% 1990 — — — — 0 2 2 0.0% — — — — — — — —
1988 4 9 13 30.8% 1 4 5 20.0% 0 1 1 0.0% 1 2 3 33.3% — — — — — — — — — — — — — — — — —
1989 7 9 16 43.8% 0 3 3 0.0% 0 2 2 0.0% 0 1 1 0.0% — — — — — — — — — — — — — — — — —
1990 4 5 9 44.4% 3 3 6 50.0% 0 1 1 0.0% 1 2 3 33.3% — — — — — — — — — — — — — — — — —
1991 5 5 10 50.0% 0 2 2 0.0% — — — — 0 1 1 0.0% — — — — — — — — — — — — — — — — —
1992 0 6 6 0.0% 1 1 2 50.0% 0 1 1 0.0% — — — — — — — — — — — — — — — — — — — — —
1993 1 2 3 33.3% — — — — — — — — — — — — — — — — — — — — — — — — — — — — —
Career 75 85 160 46.9% 17 32 49 34.7% 12 29 41 29.3% 53 61 114 46.5% Career 69 61 130 53.1% 15 29 44 34.1% 9 17 26 34.6% 14 21 35 40.0%

Advanced Statistics Comparison by Career Season

Rows are aligned in career order because complete birth data is unavailable. 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.

Mary Lou Piatek Beth Herr
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
1978 1499 106.9 — — — — — — — 0.0% -3.50 — — — -0.11 1981 1483 116.0 — — — — +93 — — 11.1% -2.44 0–1 0–1 — -0.22
1979 1547 118.3 — — — — +98 — — 42.1% -0.89 1–2 (33%) 0–1 — +0.12 1982 1626 130.6 — — — — +65 -105 — 58.6% +0.48 2–1 (67%) 1–0 — +0.19
1980 1763 137.4 — — — — +9 -186 — 57.7% +0.61 4–3 (57%) 3–0 (100%) — +0.65 1983 1703 130.2 — — — — +4 -33 -74 52.2% +0.27 7–9 (44%) 5–4 (56%) 101.7 +0.37
1981 1875 146.3 — — — — +65 -198 -301 56.7% +0.48 8–10 (44%) 6–5 (55%) 100.9 -2.75 1984 1700 124.6 — — — — +39 -73 -82 47.9% -0.17 9–7 (56%) 3–3 (50%) 103.5 +0.47
1982 1794 142.2 — — — — +59 -196 -212 47.1% -0.08 4–5 (44%) 2–3 (40%) 96.6 -0.89 1985 1630 116.3 — — — — +41 -29 -80 41.3% -0.46 8–4 (67%) 6–0 (100%) 107.3 +1.50
1983 1722 143.9 — — — — +55 -87 — 41.3% -0.43 4–7 (36%) 0–5 (0%) 91.3 -4.11 1986 1708 128.9 — — — — +52 -147 — 60.5% +0.78 2–7 (22%) 5–3 (63%) 95.2 +4.43
1984 1704 128.6 — — — — -14 — -70 47.7% -0.47 5–5 (50%) 4–3 (57%) 100.9 -0.88 1987 1584 108.6 — — — — +35 -91 -19 34.7% -0.98 2–3 (40%) 1–1 — +1.30
1985 1678 113.9 — — — — -28 -65 -67 43.1% -0.61 5–3 (63%) 1–3 (25%) 100.7 +1.98 1988 1545 102.7 — — — — +15 — — 36.8% -0.76 4–6 (40%) 0–1 — +0.78
1986 1619 111.1 — — — — +10 — -25 38.5% -0.67 2–4 (33%) 0–3 (0%) 95.5 +1.45 1989 1540 114.6 — — — — +19 — — 43.6% -0.47 3–6 (33%) 1–3 (25%) — +1.50
1987 1595 117.3 — — — — +33 — — 35.7% -0.78 3–3 (50%) 0–1 — +0.12 1990 1519 101.1 — — — — — — — 20.0% -2.20 0–1 0–1 — -0.16
1988 1543 116.2 — — — — +33 -44 — 30.8% -1.31 4–4 (50%) 0–2 — -0.58 — — — — — — — — — — — — — — — —
1989 1593 121.4 — — — — +35 -117 — 31.4% -1.65 5–2 (71%) 4–2 (67%) 107.3 -2.73 — — — — — — — — — — — — — — — —
1990 1612 125.3 — — — — +7 -86 — 43.9% -0.63 1–2 (33%) 0–2 — -0.44 — — — — — — — — — — — — — — — —
1991 1630 119.5 — — — — +17 — — 41.4% -0.31 1–2 (33%) 0–2 — -0.69 — — — — — — — — — — — — — — — —
1992 1560 101.4 — — — — -16 — — 23.8% -2.00 0–3 (0%) 0–2 — -0.39 — — — — — — — — — — — — — — — —
1993 1555 103.2 — — — — -21 — — 42.9% -0.71 0–1 1–0 — -0.16 — — — — — — — — — — — — — — — —
Career 1938 136.6 — — — — +26 -129 -156 44.3% -0.42 47–56 (46%) 21–34 (38%) 92.7 -2.59 Career 1767 126.1 — — — — +37 -57 -62 46.7% -0.17 37–45 (45%) 22–17 (56%) 102.6 +4.36

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.