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

Mary Lou Piatek vs Mercedes Paz H2H: 1-1

Mary Lou Piatek and Mercedes Paz are tied 1–1 in their WTA head-to-head. Across 2 main-draw meetings, they are tied 1–1 on hard courts. Most recently, Mary Lou Piatek won the 1993 Oklahoma round of 32 6-2 6-3.

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Mary Lou Piatek
USA
H2H
1 – 1
2 main-draw meetings
Mercedes Paz
ARG Age 60 Right-Handed 180 cm / 5'11"

H2H Match Log

PlayerScorePlayerMatch DataDateRoundTournamentCategorySurface
Mary Lou Piatek 6-2 6-3 Mercedes Paz #98 Match data Feb 18, 1993* R32 Oklahoma Tier III → modern equivalent WTA 250 Hard
Mercedes Paz #81 6-4 6-3 Mary Lou Piatek Match data Nov 16, 1991* QF Indianapolis Tier IV → modern equivalent 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
Mercedes Paz #521 #28 185 1,822 145 184 44.1% 0 0 0 0 3 3

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 Mercedes Paz
YrW-LWin %RankEloGSTitles YrW-LWin %RankEloGSTitles
1978 0–1 0.0% — 1,499 0 0 1985 7–11 38.9% #115 1,526 0 1
1979 3–5 37.5% — 1,546 0 0 1986 22–23 48.9% #60 1,577 0 1
1980 16–12 57.1% — 1,734 0 0 1987 15–20 42.9% #88 1,637 0 1
1981 30–22 57.7% — 1,869 0 1 1988 24–15 61.5% #44 1,779 0 2
1982 18–21 46.2% — 1,791 0 1 1989 13–19 40.6% #91 1,647 0 2
1983 12–20 37.5% — 1,720 0 1 1990 25–20 55.6% #32 1,775 0 3
1984 18–20 47.4% — 1,703 0 2 1991 19–23 45.2% #71 1,683 0 3
1985 14–18 43.8% — 1,677 0 2 1992 10–19 34.5% #107 1,606 0 3
1986 8–15 34.8% — 1,618 0 2 1993 2–11 15.4% #213 1,491 0 3
1987 6–12 33.3% — 1,594 0 2 1994 3–10 23.1% #140 1,474 0 3
1988 6–16 27.3% — 1,542 0 2 1995 4–8 33.3% #164 1,451 0 3
1989 7–15 31.8% — 1,592 0 2 1996 1–5 16.7% #124 1,442 0 3
1990 8–11 42.1% — 1,611 0 2 — — — — — — —
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 Mercedes Paz
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% 1985 2 4 6 33.3% 5 5 10 50.0% 0 2 2 0.0% — — — —
1979 1 1 2 50.0% 0 1 1 0.0% — — — — 2 3 5 40.0% 1986 8 10 18 44.4% 13 8 21 61.9% 0 2 2 0.0% 1 3 4 25.0%
1980 5 3 8 62.5% 3 1 4 75.0% 0 2 2 0.0% 8 6 14 57.1% 1987 4 4 8 50.0% 11 14 25 44.0% 0 2 2 0.0% — — — —
1981 15 5 20 75.0% 6 4 10 60.0% 4 6 10 40.0% 5 7 12 41.7% 1988 11 5 16 68.8% 13 10 23 56.5% — — — — — — — —
1982 4 5 9 44.4% 0 3 3 0.0% 1 2 3 33.3% 13 11 24 54.2% 1989 0 6 6 0.0% 13 11 24 54.2% 0 1 1 0.0% 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% 1990 3 4 7 42.9% 17 9 26 65.4% 0 1 1 0.0% 5 6 11 45.5%
1984 9 8 17 52.9% 0 1 1 0.0% 5 6 11 45.5% 4 5 9 44.4% 1991 9 8 17 52.9% 9 11 20 45.0% 0 1 1 0.0% 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% 1992 0 5 5 0.0% 10 12 22 45.5% — — — — 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% 1993 2 5 7 28.6% 0 6 6 0.0% — — — — — — — —
1987 3 5 8 37.5% 0 2 2 0.0% 0 2 2 0.0% 3 3 6 50.0% 1994 0 3 3 0.0% 1 4 5 20.0% 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% 1995 2 2 4 50.0% 1 5 6 16.7% 1 1 2 50.0% — — — —
1989 7 9 16 43.8% 0 3 3 0.0% 0 2 2 0.0% 0 1 1 0.0% 1996 0 1 1 0.0% 0 3 3 0.0% 1 1 2 50.0% — — — —
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% 49 60 109 45.0% Career 41 57 98 41.8% 93 98 191 48.7% 3 12 15 20.0% 8 17 25 32.0%

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 Mercedes Paz
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 1985 1526 110.7 — — — — +40 +38 — 40.9% -0.66 4–4 (50%) 0–1 — +0.74
1979 1547 118.2 — — — — +97 — — 42.1% -0.89 1–2 (33%) 0–1 — +0.14 1986 1577 119.8 — — — — -30 +125 — 50.5% +0.08 7–10 (41%) 7–3 (70%) 100.7 +3.38
1980 1735 137.7 — — — — +8 -158 — 55.7% +0.51 3–2 (60%) 1–0 — -0.18 1987 1637 131.6 — — — — -16 +33 — 45.6% -0.18 3–6 (33%) 2–2 (50%) 97.5 -0.70
1981 1869 146.1 — — — — +63 -192 -295 56.7% +0.48 8–10 (44%) 6–5 (55%) 101.1 -3.04 1988 1780 134.3 — — — — -56 -13 — 57.5% +0.52 7–2 (78%) 4–3 (57%) 106.9 +0.57
1982 1792 141.6 — — — — +56 -194 -210 47.1% -0.08 4–5 (44%) 2–3 (40%) 96.7 -0.75 1989 1648 125.8 — — — — -60 +126 — 45.9% -0.22 2–8 (20%) 8–7 (53%) 94.4 +0.43
1983 1721 143.7 — — — — +53 -86 — 41.3% -0.43 4–7 (36%) 0–5 (0%) 91.3 -3.81 1990 1776 143.2 — — — — -121 +116 — 54.3% +0.15 8–9 (47%) 7–7 (50%) 101.6 -2.36
1984 1703 128.4 — — — — -13 — -69 47.7% -0.47 5–5 (50%) 4–3 (57%) 101.0 -0.69 1991 1684 124.3 — — — — +2 +72 — 45.2% -0.53 5–6 (45%) 6–3 (67%) 102.6 +1.48
1985 1678 113.6 — — — — -29 -65 -67 43.1% -0.61 5–3 (63%) 1–3 (25%) 100.7 +2.10 1992 1606 128.7 — — — — -21 +95 — 42.6% -0.54 1–9 (10%) 2–1 (67%) 91.7 -1.41
1986 1618 111.0 — — — — +10 — -24 38.5% -0.67 2–4 (33%) 0–3 (0%) 95.5 +1.60 1993 1491 102.6 — — — — +47 +87 — 24.1% -1.38 0–5 (0%) 0–3 (0%) — +0.61
1987 1594 117.2 — — — — +33 — — 35.7% -0.78 3–3 (50%) 0–1 — +0.29 1994 1474 115.3 — — — — +29 +93 — 22.2% -1.81 0–1 1–1 — +0.31
1988 1542 116.2 — — — — +33 -43 — 30.8% -1.31 4–4 (50%) 0–2 — -0.55 1995 1452 102.8 — — — — +50 +58 — 36.0% -0.72 0–1 1–1 — +0.83
1989 1592 121.3 — — — — +35 -116 — 31.4% -1.65 5–2 (71%) 4–2 (67%) 107.3 -2.88 1996 1442 97.8 — — — — — +17 — 16.7% -2.67 — 0–1 — +0.03
1990 1611 125.3 — — — — +8 -85 — 43.9% -0.63 1–2 (33%) 0–2 — -0.44 — — — — — — — — — — — — — — — —
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 1822 131.0 — — — — -28 +76 — 45.9% -0.29 37–61 (38%) 38–33 (54%) 96.4 +1.19

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.