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

Erika De Lone vs Mary Lou Piatek H2H: 1-0

Erika De Lone holds a 1–0 lead over Mary Lou Piatek in their WTA head-to-head. Across 1 main-draw meeting, Erika De Lone leads 1–0 on hard courts. Most recently, Erika De Lone won the 1992 Oklahoma round of 32 6-2 3-6 6-3.

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Erika De Lone
USA Age 53 Right-Handed 170 cm / 5'7"
H2H
1 – 0
1 main-draw meetings
Mary Lou Piatek
USA

H2H Match Log

PlayerScorePlayerMatch DataDateRoundTournamentCategorySurface
Erika De Lone #109 6-2 3-6 6-3 Mary Lou Piatek Match data Feb 20, 1992* R32 Oklahoma 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
Erika De Lone #425 #65 501 1,603 42 100 29.6% 0 0 0 0 0 0
Mary Lou Piatek — — — 1,931 153 206 42.6% 0 0 0 0 2 2

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.

Erika De Lone Mary Lou Piatek
YrW-LWin %RankEloGSTitles YrW-LWin %RankEloGSTitles
1989 0–2 0.0% #298 1,472 0 0 1978 0–1 0.0% — 1,499 0 0
1990 4–6 40.0% #138 1,502 0 0 1979 3–5 37.5% — 1,546 0 0
1991 9–14 39.1% #110 1,558 0 0 1980 16–12 57.1% — 1,734 0 0
1992 1–4 20.0% #175 1,526 0 0 1981 30–22 57.7% — 1,869 0 1
1993 5–9 35.7% #183 1,515 0 0 1982 18–21 46.2% — 1,791 0 1
1994 1–9 10.0% #200 1,436 0 0 1983 12–20 37.5% — 1,720 0 1
1995 4–9 30.8% #124 1,482 0 0 1984 18–20 47.4% — 1,703 0 2
1996 2–7 22.2% #131 1,449 0 0 1985 14–18 43.8% — 1,677 0 2
1997 1–3 25.0% #149 1,442 0 0 1986 8–15 34.8% — 1,618 0 2
1998 2–4 33.3% #178 1,443 0 0 1987 6–12 33.3% — 1,594 0 2
1999 5–7 41.7% #67 1,510 0 0 1988 6–16 27.3% — 1,542 0 2
2000 7–18 28.0% #118 1,488 0 0 1989 7–15 31.8% — 1,592 0 2
2001 0–5 0.0% #180 1,431 0 0 1990 8–11 42.1% — 1,611 0 2
2002 1–3 25.0% #165 1,426 0 0 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.

Erika De Lone Mary Lou Piatek
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 %
1989 — — — — — — — — 0 1 1 0.0% 0 1 1 0.0% 1978 — — — — — — — — — — — — 0 1 1 0.0%
1990 3 5 8 37.5% — — — — 1 1 2 50.0% — — — — 1979 1 1 2 50.0% 0 1 1 0.0% — — — — 2 3 5 40.0%
1991 9 11 20 45.0% 0 1 1 0.0% 0 2 2 0.0% — — — — 1980 5 3 8 62.5% 3 1 4 75.0% 0 2 2 0.0% 8 6 14 57.1%
1992 1 3 4 25.0% — — — — 0 1 1 0.0% — — — — 1981 15 5 20 75.0% 6 4 10 60.0% 4 6 10 40.0% 5 7 12 41.7%
1993 4 7 11 36.4% — — — — — — — — 1 2 3 33.3% 1982 4 5 9 44.4% 0 3 3 0.0% 1 2 3 33.3% 13 11 24 54.2%
1994 0 6 6 0.0% — — — — 0 1 1 0.0% 1 2 3 33.3% 1983 5 6 11 45.5% 1 4 5 20.0% 0 2 2 0.0% 6 8 14 42.9%
1995 2 4 6 33.3% 1 2 3 33.3% 1 1 2 50.0% 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%
1996 2 4 6 33.3% 0 2 2 0.0% 0 1 1 0.0% — — — — 1985 7 11 18 38.9% 2 1 3 66.7% 1 2 3 33.3% 4 4 8 50.0%
1997 1 3 4 25.0% — — — — — — — — — — — — 1986 5 5 10 50.0% 0 2 2 0.0% 1 2 3 33.3% 2 6 8 25.0%
1998 2 2 4 50.0% — — — — 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%
1999 5 5 10 50.0% — — — — 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%
2000 3 8 11 27.3% 2 4 6 33.3% 2 3 5 40.0% 0 3 3 0.0% 1989 7 9 16 43.8% 0 3 3 0.0% 0 2 2 0.0% 0 1 1 0.0%
2001 0 2 2 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%
2002 1 2 3 33.3% 0 1 1 0.0% — — — — — — — — 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 33 62 95 34.7% 3 12 15 20.0% 4 14 18 22.2% 2 12 14 14.3% Career 75 85 160 46.9% 17 32 49 34.7% 12 29 41 29.3% 49 60 109 45.0%

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.

Erika De Lone Mary Lou Piatek
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
1989 1472 91.8 — — — — — — — 0.0% -4.50 — 0–1 — +0.43 1978 1499 106.8 — — — — — — — 0.0% -3.50 — — — -0.12
1990 1503 119.2 — — — — +41 — — 42.9% -0.95 0–1 1–1 — +0.36 1979 1547 118.2 — — — — +97 — — 42.1% -0.89 1–2 (33%) 0–1 — +0.14
1991 1558 128.6 — — — — +55 — — 40.4% -0.90 5–6 (45%) 1–3 (25%) 97.2 -0.39 1980 1735 137.7 — — — — +8 -158 — 55.7% +0.51 3–2 (60%) 1–0 — -0.18
1992 1527 95.8 — — — — +59 — — 30.8% -2.08 1–2 (33%) 0–1 — -0.10 1981 1869 146.1 — — — — +63 -192 -295 56.7% +0.48 8–10 (44%) 6–5 (55%) 101.1 -3.04
1993 1515 103.3 — — — — +34 — — 33.3% -1.24 4–1 (80%) 1–2 (33%) 103.9 +0.69 1982 1792 141.6 — — — — +56 -194 -210 47.1% -0.08 4–5 (44%) 2–3 (40%) 96.7 -0.75
1994 1437 100.1 — — — — +35 — — 21.7% -1.56 0–3 (0%) 1–1 — +0.52 1983 1721 143.7 — — — — +53 -86 — 41.3% -0.43 4–7 (36%) 0–5 (0%) 91.3 -3.81
1995 1483 128.5 — — — — -5 +65 — 37.9% -0.69 0–3 (0%) 1–0 — -0.88 1984 1703 128.4 — — — — -13 — -69 47.7% -0.47 5–5 (50%) 4–3 (57%) 101.0 -0.69
1996 1450 101.8 — — — — +28 — — 40.0% -0.80 1–6 (14%) 1–1 — +0.33 1985 1678 113.6 — — — — -29 -65 -67 43.1% -0.61 5–3 (63%) 1–3 (25%) 100.7 +2.10
1997 1443 109.8 — — — — +31 — — 42.9% -0.57 0–1 — — +0.34 1986 1618 111.0 — — — — +10 — -24 38.5% -0.67 2–4 (33%) 0–3 (0%) 95.5 +1.60
1998 1443 103.8 — — — — +38 — — 35.7% -1.57 1–1 — — +0.26 1987 1594 117.2 — — — — +33 — — 35.7% -0.78 3–3 (50%) 0–1 — +0.29
1999 1510 115.1 — — — — +43 — — 48.0% -0.12 1–4 (20%) 2–1 (67%) — +0.34 1988 1542 116.2 — — — — +33 -43 — 30.8% -1.31 4–4 (50%) 0–2 — -0.55
2000 1489 107.2 — — — — -3 +9 -68 32.7% -1.58 1–4 (20%) 1–2 (33%) 96.7 -0.13 1989 1592 121.3 — — — — +35 -116 — 31.4% -1.65 5–2 (71%) 4–2 (67%) 107.3 -2.88
2001 1432 93.8 — — — — +13 — — 23.1% -1.69 0–3 (0%) — — +0.32 1990 1611 125.3 — — — — +8 -85 — 43.9% -0.63 1–2 (33%) 0–2 — -0.44
2002 1426 107.8 — — — — +15 — — 40.0% -0.40 0–2 1–0 — +0.08 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 1603 117.1 — — — — +31 +28 -68 35.9% -1.14 14–37 (27%) 10–13 (43%) 87.6 +1.54 Career 1932 136.4 — — — — +26 -124 -154 43.9% -0.44 46–55 (46%) 19–34 (36%) 92.3 -2.67

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.