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

Mary Lou Piatek vs Pilar Vasquez H2H: 1-0

Mary Lou Piatek holds a 1–0 lead over Pilar Vasquez in their WTA head-to-head. Across 1 main-draw meeting, Mary Lou Piatek leads 1–0 on hard courts. Most recently, Mary Lou Piatek won the 1989 San Antonio round of 32 7-6 6-2.

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Mary Lou Piatek
USA
H2H
1 – 0
1 main-draw meetings
Pilar Vasquez
PER Age 63 Right-Handed

H2H Match Log

PlayerScorePlayerMatch DataDateRoundTournamentCategorySurface
Mary Lou Piatek 7-6 6-2 Pilar Vasquez #160 Match data Mar 2, 1989* R32 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.

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 — — — 1,931 153 206 42.6% 0 0 0 0 2 2
Pilar Vasquez #772 #66 8 1,799 94 130 42.0% 0 0 0 0 4 4

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 Pilar Vasquez
YrW-LWin %RankEloGSTitles YrW-LWin %RankEloGSTitles
1978 0–1 0.0% — 1,499 0 0 1980 15–0 100.0% — 1,695 0 3
1979 3–5 37.5% — 1,546 0 0 1981 22–11 66.7% — 1,708 0 4
1980 16–12 57.1% — 1,734 0 0 1982 11–14 44.0% — 1,623 0 4
1981 30–22 57.7% — 1,869 0 1 1983 11–14 44.0% — 1,612 0 4
1982 18–21 46.2% — 1,791 0 1 1984 7–17 29.2% #116 1,543 0 4
1983 12–20 37.5% — 1,720 0 1 1985 1–12 7.7% #116 1,438 0 4
1984 18–20 47.4% — 1,703 0 2 1986 2–9 18.2% #149 1,408 0 4
1985 14–18 43.8% — 1,677 0 2 1987 8–11 42.1% #151 1,481 0 4
1986 8–15 34.8% — 1,618 0 2 1988 6–12 33.3% #161 1,510 0 4
1987 6–12 33.3% — 1,594 0 2 1989 4–9 30.8% #194 1,497 0 4
1988 6–16 27.3% — 1,542 0 2 1990 5–10 33.3% #151 1,473 0 4
1989 7–15 31.8% — 1,592 0 2 1991 1–10 9.1% #306 1,408 0 4
1990 8–11 42.1% — 1,611 0 2 1993 1–1 50.0% #292 1,421 0 4
1991 5–8 38.5% — 1,629 0 2 — — — — — — —
1992 1–8 11.1% — 1,559 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 Pilar Vasquez
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% 1980 — — — — 15 0 15 100.0% — — — — — — — —
1979 1 1 2 50.0% 0 1 1 0.0% — — — — 2 3 5 40.0% 1981 0 3 3 0.0% 5 5 10 50.0% — — — — — — — —
1980 5 3 8 62.5% 3 1 4 75.0% 0 2 2 0.0% 8 6 14 57.1% 1982 4 4 8 50.0% 7 9 16 43.8% — — — — — — — —
1981 15 5 20 75.0% 6 4 10 60.0% 4 6 10 40.0% 5 7 12 41.7% 1983 7 5 12 58.3% 2 7 9 22.2% — — — — 2 2 4 50.0%
1982 4 5 9 44.4% 0 3 3 0.0% 1 2 3 33.3% 13 11 24 54.2% 1984 4 7 11 36.4% 2 8 10 20.0% 1 1 2 50.0% 0 1 1 0.0%
1983 5 6 11 45.5% 1 4 5 20.0% 0 2 2 0.0% 6 8 14 42.9% 1985 0 3 3 0.0% 1 7 8 12.5% 0 2 2 0.0% — — — —
1984 9 8 17 52.9% 0 1 1 0.0% 5 6 11 45.5% 4 5 9 44.4% 1986 1 4 5 20.0% 1 5 6 16.7% — — — — — — — —
1985 7 11 18 38.9% 2 1 3 66.7% 1 2 3 33.3% 4 4 8 50.0% 1987 7 5 12 58.3% 1 3 4 25.0% 0 1 1 0.0% 0 2 2 0.0%
1986 5 5 10 50.0% 0 2 2 0.0% 1 2 3 33.3% 2 6 8 25.0% 1988 5 9 14 35.7% 1 2 3 33.3% 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% 1989 2 6 8 25.0% 1 1 2 50.0% — — — — 1 2 3 33.3%
1988 4 9 13 30.8% 1 4 5 20.0% 0 1 1 0.0% 1 2 3 33.3% 1990 3 5 8 37.5% 1 3 4 25.0% — — — — 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% 1991 0 7 7 0.0% 0 1 1 0.0% — — — — 1 2 3 33.3%
1990 4 5 9 44.4% 3 3 6 50.0% 0 1 1 0.0% 1 2 3 33.3% 1993 1 1 2 50.0% — — — — — — — — — — — —
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% 49 60 109 45.0% Career 34 59 93 36.6% 37 51 88 42.0% 1 5 6 16.7% 5 11 16 31.2%

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 Pilar Vasquez
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 106.8 — — — — — — — 0.0% -3.50 — — — -0.12 1980 1696 133.9 — — — — — +93 — 100.0% +3.97 — 1–0 — +2.78
1979 1547 118.2 — — — — +97 — — 42.1% -0.89 1–2 (33%) 0–1 — +0.14 1981 1709 135.2 — — — — -147 +84 — 64.9% +1.14 4–4 (50%) 2–1 (67%) 100.3 -0.42
1980 1735 137.7 — — — — +8 -158 — 55.7% +0.51 3–2 (60%) 1–0 — -0.18 1982 1623 111.1 — — — — -51 +27 — 44.8% -0.50 4–4 (50%) 2–2 (50%) — +1.03
1981 1869 146.1 — — — — +63 -192 -295 56.7% +0.48 8–10 (44%) 6–5 (55%) 101.1 -3.04 1983 1612 111.0 — — — — +15 +14 — 44.1% -0.47 5–4 (56%) 4–3 (57%) 101.9 +3.38
1982 1792 141.6 — — — — +56 -194 -210 47.1% -0.08 4–5 (44%) 2–3 (40%) 96.7 -0.75 1984 1544 104.4 — — — — +13 -1 — 35.2% -1.17 1–5 (17%) 4–1 (80%) 98.6 +0.59
1983 1721 143.7 — — — — +53 -86 — 41.3% -0.43 4–7 (36%) 0–5 (0%) 91.3 -3.81 1985 1438 95.2 — — — — +88 +8 — 20.0% -2.73 0–4 (0%) — — +0.36
1984 1703 128.4 — — — — -13 — -69 47.7% -0.47 5–5 (50%) 4–3 (57%) 101.0 -0.69 1986 1408 94.9 — — — — +93 -5 — 25.0% -2.33 0–2 — — +0.42
1985 1678 113.6 — — — — -29 -65 -67 43.1% -0.61 5–3 (63%) 1–3 (25%) 100.7 +2.10 1987 1482 106.8 — — — — +84 -100 — 45.7% -0.30 3–5 (38%) 1–0 — +1.44
1986 1618 111.0 — — — — +10 — -24 38.5% -0.67 2–4 (33%) 0–3 (0%) 95.5 +1.60 1988 1510 111.3 — — — — +17 -101 — 39.5% -0.95 2–5 (29%) 2–2 (50%) — +0.40
1987 1594 117.2 — — — — +33 — — 35.7% -0.78 3–3 (50%) 0–1 — +0.29 1989 1498 108.0 — — — — -7 — — 33.3% -1.07 2–2 (50%) 0–2 — +0.62
1988 1542 116.2 — — — — +33 -43 — 30.8% -1.31 4–4 (50%) 0–2 — -0.55 1990 1474 96.8 — — — — +14 -57 — 36.4% -1.06 1–2 (33%) 2–2 (50%) 100.4 +1.73
1989 1592 121.3 — — — — +35 -116 — 31.4% -1.65 5–2 (71%) 4–2 (67%) 107.3 -2.88 1991 1409 98.9 — — — — +1 — — 16.0% -2.28 1–2 (33%) 0–3 (0%) — +0.15
1990 1611 125.3 — — — — +8 -85 — 43.9% -0.63 1–2 (33%) 0–2 — -0.44 1993 1422 97.4 — — — — — — — 40.0% -1.40 1–0 — — +0.13
1991 1630 119.4 — — — — +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 — — — — -22 — — 42.9% -0.71 0–1 1–0 — -0.16 — — — — — — — — — — — — — — — —
Career 1932 136.4 — — — — +26 -124 -154 43.9% -0.44 46–55 (46%) 19–34 (36%) 92.3 -2.67 Career 1800 115.2 — — — — +17 +22 — 44.4% -0.47 24–39 (38%) 18–16 (53%) 97.2 +5.63

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.