H2H data updated: 2026-10-29 00:00 UTC

Mary Lou Piatek vs Helen Kelesi H2H: 1-2

Helen Kelesi holds a 2–1 lead over Mary Lou Piatek in their WTA head-to-head. Across 3 main-draw meetings, Helen Kelesi leads 2–1 on hard courts. Most recently, Mary Lou Piatek won the 1991 Brentwood round of 32 6-2 6-4.

Want to explore more matchups? Advanced rivalry search lets you browse current and historical rivalries, unbeaten records, or every matchup for a player.

Mary Lou Piatek
USA
H2H
1 – 2
3 main-draw meetings
Helen Kelesi
CAN Age 56 Right-Handed 165 cm / 5'5"

H2H Match Log

PlayerScorePlayerMatch DataDateRoundTournamentCategorySurface
Mary Lou Piatek 6-2 6-4 Helen Kelesi #28 Match data Nov 7, 1991* R32 Brentwood Tier IV → modern equivalent WTA 250 Hard
Helen Kelesi #17 7-6 6-4 Mary Lou Piatek Match data Nov 10, 1989* R16 Nashville WTA 250 Hard
Helen Kelesi #16 6-2 6-0 Mary Lou Piatek Match data Mar 16, 1989* R32 Boca Raton 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 — — — 1,938 157 207 43.1% 0 0 0 0 2 2
Helen Kelesi — #13 54 1,954 213 165 56.3% 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.

Mary Lou Piatek Helen Kelesi
YrW-LWin %RankEloGSTitles YrW-LWin %RankEloGSTitles
1978 0–1 0.0% — 1,499 0 0 1985 15–15 50.0% #48 1,642 0 0
1979 3–5 37.5% — 1,547 0 0 1986 28–21 57.1% #39 1,745 0 1
1980 20–13 60.6% — 1,762 0 0 1987 22–19 53.7% #32 1,785 0 1
1981 30–22 57.7% — 1,874 0 1 1988 33–19 63.5% #19 1,815 0 2
1982 18–21 46.2% — 1,793 0 1 1989 36–18 66.7% #13 1,872 0 2
1983 12–20 37.5% — 1,721 0 1 1990 23–17 57.5% #25 1,785 0 2
1984 18–20 47.4% — 1,704 0 2 1991 26–20 56.5% #29 1,715 0 2
1985 14–18 43.8% — 1,678 0 2 1992 7–13 35.0% #128 1,632 0 2
1986 8–15 34.8% — 1,618 0 2 1993 18–13 58.1% #48 1,756 0 2
1987 6–12 33.3% — 1,594 0 2 1994 5–10 33.3% #125 1,647 0 2
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 Helen Kelesi
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 11 8 19 57.9% 4 4 8 50.0% 0 2 2 0.0% 0 1 1 0.0%
1979 1 1 2 50.0% 0 1 1 0.0% — — — — 2 3 5 40.0% 1986 11 7 18 61.1% 9 6 15 60.0% 2 2 4 50.0% 6 6 12 50.0%
1980 5 3 8 62.5% 3 1 4 75.0% 0 2 2 0.0% 12 7 19 63.2% 1987 8 5 13 61.5% 10 7 17 58.8% 3 4 7 42.9% 1 3 4 25.0%
1981 15 5 20 75.0% 6 4 10 60.0% 4 6 10 40.0% 5 7 12 41.7% 1988 11 10 21 52.4% 20 5 25 80.0% 0 1 1 0.0% 2 3 5 40.0%
1982 4 5 9 44.4% 0 3 3 0.0% 1 2 3 33.3% 13 11 24 54.2% 1989 20 9 29 69.0% 13 5 18 72.2% 0 1 1 0.0% 3 3 6 50.0%
1983 5 6 11 45.5% 1 4 5 20.0% 0 2 2 0.0% 6 8 14 42.9% 1990 7 8 15 46.7% 16 7 23 69.6% 0 1 1 0.0% 0 1 1 0.0%
1984 9 8 17 52.9% 0 1 1 0.0% 5 6 11 45.5% 4 5 9 44.4% 1991 8 8 16 50.0% 13 7 20 65.0% 2 2 4 50.0% 3 3 6 50.0%
1985 7 11 18 38.9% 2 1 3 66.7% 1 2 3 33.3% 4 4 8 50.0% 1992 7 10 17 41.2% 0 2 2 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% 1993 11 8 19 57.9% 2 3 5 40.0% 2 1 3 66.7% 3 1 4 75.0%
1987 3 5 8 37.5% 0 2 2 0.0% 0 2 2 0.0% 3 3 6 50.0% 1994 4 4 8 50.0% 1 4 5 20.0% 0 1 1 0.0% 0 1 1 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 98 77 175 56.0% 88 50 138 63.8% 9 15 24 37.5% 18 23 41 43.9%

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 Helen Kelesi
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 1985 1642 120.7 — — — — +5 -36 — 48.0% -0.51 9–6 (60%) 5–1 (83%) 106.9 +0.83
1979 1547 118.3 — — — — +98 — — 42.1% -0.89 1–2 (33%) 0–1 — +0.12 1986 1745 135.5 — — — — -29 -31 -159 54.6% +0.16 12–9 (57%) 10–8 (56%) 106.9 +0.59
1980 1763 137.4 — — — — +9 -186 — 57.7% +0.61 4–3 (57%) 3–0 (100%) — +0.65 1987 1786 144.3 — — — — -40 +12 -186 53.5% +0.11 8–9 (47%) 5–4 (56%) 100.3 -2.78
1981 1875 146.3 — — — — +65 -198 -301 56.7% +0.48 8–10 (44%) 6–5 (55%) 100.9 -2.75 1988 1815 148.0 — — — — -89 +155 — 62.1% +0.90 6–8 (43%) 4–6 (40%) 96.5 -0.44
1982 1794 142.2 — — — — +59 -196 -212 47.1% -0.08 4–5 (44%) 2–3 (40%) 96.6 -0.89 1989 1872 151.2 — — — — -32 +146 — 64.5% +0.83 11–6 (65%) 6–4 (60%) 105.2 -1.47
1983 1722 143.9 — — — — +55 -87 — 41.3% -0.43 4–7 (36%) 0–5 (0%) 91.3 -4.11 1990 1785 139.7 — — — — -66 +217 — 60.0% +0.68 4–8 (33%) 5–4 (56%) 93.8 +0.69
1984 1704 128.6 — — — — -14 — -70 47.7% -0.47 5–5 (50%) 4–3 (57%) 100.9 -0.88 1991 1716 141.5 — — — — -36 +257 -140 54.7% +0.47 8–6 (57%) 2–3 (40%) 98.7 +0.82
1985 1678 113.9 — — — — -28 -65 -67 43.1% -0.61 5–3 (63%) 1–3 (25%) 100.7 +1.98 1992 1633 124.6 — — — — -3 — — 46.3% -0.12 2–5 (29%) 2–4 (33%) 94.8 -0.03
1986 1619 111.1 — — — — +10 — -25 38.5% -0.67 2–4 (33%) 0–3 (0%) 95.5 +1.45 1993 1756 136.5 — — — — -2 +91 -126 57.6% +0.51 6–2 (75%) 6–4 (60%) 107.2 -1.21
1987 1595 117.3 — — — — +33 — — 35.7% -0.78 3–3 (50%) 0–1 — +0.12 1994 1647 125.6 — — — — +73 +114 — 38.7% -0.61 1–2 (33%) 1–1 — -0.09
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 1955 146.4 — — — — -29 +126 -160 56.1% +0.37 67–61 (52%) 46–39 (54%) 104.4 -0.82

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.