H2H data updated: 2026-10-17 00:00 UTC

Kathleen Harter vs Stacy Margolin H2H: 1-0

Kathleen Harter holds a 1–0 lead over Stacy Margolin in their WTA head-to-head. Across 1 main-draw meeting, Kathleen Harter leads 1–0 on hard courts. Most recently, Kathleen Harter won the 1978 San Diego Futures round of 16 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.

Kathleen Harter
USA Age 79
H2H
1 – 0
1 main-draw meetings
Stacy Margolin
USA Age 67

H2H Match Log

PlayerScorePlayerMatch DataDateRoundTournamentCategorySurface
Kathleen Harter 6-2 6-4 Stacy Margolin Match data Jan 6, 1978* R16 San Diego Futures 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
Kathleen Harter — — — 1,746 108 104 50.9% 0 0 0 0 2 2
Stacy Margolin — — — 1,856 74 100 42.5% 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.

Age Kathleen Harter Stacy Margolin
YrW-LWin %RankEloGSTitles YrW-LWin %RankEloGSTitles
17 — — — — — — — 1976 2–1 66.7% — 1,523 0 1
18 — — — — — — — 1977 1–5 16.7% — 1,504 0 2
19 — — — — — — — 1978 17–6 73.9% — 1,786 0 4
20 — — — — — — — 1979 12–20 37.5% — 1,755 0 4
21 1968 40–22 64.5% — 1,690 0 0 1980 25–26 49.0% — 1,777 0 4
22 1969 1–1 50.0% — 1,685 0 0 1981 11–20 35.5% — 1,697 0 4
23 1970 23–20 53.5% — 1,678 0 0 1982 4–14 22.2% — 1,542 0 4
24 1971 9–2 81.8% — 1,732 0 2 1983 2–5 28.6% — 1,519 0 4
25 — — — — — — — 1984 0–1 0.0% — 1,513 0 4
26 — — — — — — — 1985 0–2 0.0% — 1,480 0 4
27 1974 4–5 44.4% — 1,729 0 2 — — — — — — —
28 1975 6–8 42.9% — 1,664 0 2 — — — — — — —
29 1976 9–16 36.0% — 1,615 0 2 — — — — — — —
30 1977 12–20 37.5% — 1,644 0 2 — — — — — — —
31 1978 4–10 28.6% — 1,600 0 2 — — — — — — —

Surface Results by Age

Seasons are aligned by the age each player spent most of that calendar year. 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.

Age Kathleen Harter Stacy Margolin
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 %
17 — — — — — — — — — — — — — — — — — 1976 1 0 1 100.0% — — — — — — — — 1 1 2 50.0%
18 — — — — — — — — — — — — — — — — — 1977 0 2 2 0.0% 0 1 1 0.0% — — — — 1 2 3 33.3%
19 — — — — — — — — — — — — — — — — — 1978 10 4 14 71.4% — — — — 1 1 2 50.0% — — — —
20 — — — — — — — — — — — — — — — — — 1979 1 7 8 12.5% 1 2 3 33.3% 1 2 3 33.3% 9 9 18 50.0%
21 1968 12 5 17 70.6% 11 6 17 64.7% 16 9 25 64.0% 1 2 3 33.3% 1980 14 7 21 66.7% 0 2 2 0.0% 2 3 5 40.0% 9 14 23 39.1%
22 1969 1 1 2 50.0% — — — — — — — — — — — — 1981 6 6 12 50.0% 1 3 4 25.0% 0 2 2 0.0% 4 9 13 30.8%
23 1970 6 4 10 60.0% 7 7 14 50.0% 8 8 16 50.0% — — — — 1982 0 5 5 0.0% 2 5 7 28.6% 1 3 4 25.0% 1 1 2 50.0%
24 1971 1 1 2 50.0% — — — — 8 1 9 88.9% — — — — 1983 1 2 3 33.3% — — — — 1 2 3 33.3% — — — —
25 — — — — — — — — — — — — — — — — — 1984 0 1 1 0.0% — — — — — — — — — — — —
26 — — — — — — — — — — — — — — — — — 1985 0 1 1 0.0% — — — — — — — — — — — —
27 1974 2 2 4 50.0% 1 1 2 50.0% 0 1 1 0.0% 1 1 2 50.0% — — — — — — — — — — — — — — — — —
28 1975 — — — — 1 1 2 50.0% 3 2 5 60.0% 0 1 1 0.0% — — — — — — — — — — — — — — — — —
29 1976 0 1 1 0.0% 3 9 12 25.0% 5 5 10 50.0% 1 1 2 50.0% — — — — — — — — — — — — — — — — —
30 1977 2 4 6 33.3% 2 6 8 25.0% 5 7 12 41.7% 3 3 6 50.0% — — — — — — — — — — — — — — — — —
31 1978 3 3 6 50.0% 0 1 1 0.0% 1 2 3 33.3% 0 4 4 0.0% — — — — — — — — — — — — — — — — —
Career — 27 21 48 56.2% 25 31 56 44.6% 46 35 81 56.8% 6 12 18 33.3% — 33 35 68 48.5% 4 13 17 23.5% 6 13 19 31.6% 25 36 61 41.0%

Advanced Statistics Comparison by Age

Seasons are aligned by the age each player spent most of that calendar year. 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.

Age Kathleen Harter Stacy Margolin
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
17 — — — — — — — — — — — — — — — — 1976 1524 94.1 — — — — +93 — — 50.0% -1.00 — — — +0.95
18 — — — — — — — — — — — — — — — — 1977 1505 107.2 — — — — +54 — — 33.3% -1.00 0–2 0–3 (0%) — +0.64
19 — — — — — — — — — — — — — — — — 1978 1787 142.9 — — — — -14 — — 66.0% +1.36 5–2 (71%) 0–2 — +0.05
20 — — — — — — — — — — — — — — — — 1979 1756 143.2 — — — — -5 -225 -186 42.5% -0.05 2–7 (22%) 1–4 (20%) 92.7 -0.84
21 1968 1691 124.1 — — — — +5 -60 +10 63.4% +1.09 6–5 (55%) — — 0.00 1980 1777 143.1 — — — — -10 — -191 48.6% -0.01 4–5 (44%) 6–6 (50%) 101.4 -1.87
22 1969 1686 102.9 — — — — — — — 40.0% -0.20 1–0 — — +0.23 1981 1698 121.8 — — — — +32 -203 — 40.3% -1.19 3–7 (30%) 3–1 (75%) 97.8 +0.07
23 1970 1678 122.9 — — — — +41 -69 +30 53.1% +0.10 5–7 (42%) 2–0 — +0.91 1982 1543 96.7 — — — — +50 -86 +25 27.9% -1.70 3–4 (43%) 1–2 (33%) 99.4 +0.55
24 1971 1732 126.5 — — — — — — +71 79.2% +2.54 1–1 — — +2.89 1983 1519 103.4 — — — — +71 — +33 37.5% -0.81 0–2 0–1 — +0.45
25 — — — — — — — — — — — — — — — — 1984 1513 99.5 — — — — — — — 33.3% -2.67 0–1 — — -0.14
26 — — — — — — — — — — — — — — — — 1985 1481 92.3 — — — — — — — 0.0% -3.25 — — — +0.25
27 1974 1729 112.1 — — — — -17 — — 42.1% -1.16 1–2 (33%) 1–0 — -0.53 — — — — — — — — — — — — — — — —
28 1975 1665 112.0 — — — — — — +97 44.1% -0.82 3–3 (50%) 1–1 — +0.39 — — — — — — — — — — — — — — — —
29 1976 1615 122.9 — — — — +60 -58 +152 41.7% -0.45 3–7 (30%) 4–5 (44%) 95.7 +0.11 — — — — — — — — — — — — — — — —
30 1977 1644 127.5 — — — — +51 -97 +72 37.5% -0.88 5–3 (63%) 2–4 (33%) 101.6 +0.35 — — — — — — — — — — — — — — — —
31 1978 1600 114.2 — — — — +49 — +100 33.3% -0.85 2–3 (40%) 1–5 (17%) 95.8 +0.50 — — — — — — — — — — — — — — — —
Career — 1746 127.3 — — — — +28 -68 +57 50.8% +0.09 27–31 (47%) 11–15 (42%) 96.1 +2.31 — 1856 135.2 — — — — +9 -149 -88 44.5% -0.36 17–30 (36%) 11–19 (37%) 92.9 +0.06

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.