H2H data updated: 2026-09-12 00:00 UTC

Olga Morozova vs Stephanie Defina H2H: 1-0

Olga Morozova holds a 1–0 lead over Stephanie Defina in their WTA head-to-head. Across 1 main-draw meeting, Olga Morozova leads 1–0 on grass. Most recently, Olga Morozova won the 1970 US Open round of 32 6-1 6-3.

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Olga Morozova
URS Age 77 Right-Handed 170 cm / 5'7"
H2H
1 – 0
1 main-draw meetings
Stephanie Defina
USA Age 80

H2H Match Log

PlayerScorePlayerMatch DataDateRoundTournamentCategorySurface
Olga Morozova 6-1 6-3 Stephanie Defina Match data Sep 8, 1970* R32 US Open Grand Slam Grass

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
Olga Morozova — #7 — 2,221 325 107 75.2% 0 0 0 8 29 37
Stephanie Defina — — — 1,818 93 62 60.0% 0 0 0 0 7 7

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 Olga Morozova Stephanie Defina
YrW-LWin %RankEloGSTitles YrW-LWin %RankEloGSTitles
19 1968 14–10 58.3% — 1,571 0 1 — — — — — — —
20 1969 30–10 75.0% — 1,766 0 5 — — — — — — —
21 1970 41–9 82.0% — 1,912 0 13 — — — — — — —
22 1971 22–8 73.3% — 1,873 0 17 1968 33–22 60.0% — 1,678 0 1
23 1972 53–13 80.3% — 1,975 0 24 1969 25–9 73.5% — 1,760 0 5
24 1973 35–11 76.1% — 2,014 0 28 1970 33–17 66.0% — 1,788 0 7
25 1974 55–13 80.9% — 2,209 0 32 1971 1–9 10.0% — 1,706 0 7
26 1975 41–18 69.5% #7 2,068 0 34 1972 1–2 33.3% — 1,713 0 7
27 1976 25–10 71.4% #9 2,046 0 35 1973 0–2 0.0% — 1,685 0 7
28 1977 6–5 54.5% — 2,030 0 35 1974 0–1 0.0% — 1,674 0 7
30 1979 2–0 100.0% — 2,041 0 36 — — — — — — —
31 1980 1–0 100.0% — 2,043 0 37 — — — — — — —

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 Olga Morozova Stephanie Defina
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 %
19 1968 — — — — 8 4 12 66.7% 2 3 5 40.0% 4 3 7 57.1% — — — — — — — — — — — — — — — — —
20 1969 — — — — 12 7 19 63.2% 6 3 9 66.7% 9 0 9 100.0% — — — — — — — — — — — — — — — — —
21 1970 — — — — 11 2 13 84.6% 15 6 21 71.4% 9 1 10 90.0% — — — — — — — — — — — — — — — — —
22 1971 — — — — 7 2 9 77.8% 10 6 16 62.5% 4 0 4 100.0% 1968 4 6 10 40.0% 20 7 27 74.1% 7 7 14 50.0% 2 2 4 50.0%
23 1972 — — — — 13 4 17 76.5% 30 7 37 81.1% 5 2 7 71.4% 1969 1 1 2 50.0% 17 5 22 77.3% — — — — 6 2 8 75.0%
24 1973 — — — — 11 3 14 78.6% 12 3 15 80.0% 12 5 17 70.6% 1970 4 3 7 57.1% 26 9 35 74.3% 1 2 3 33.3% 2 2 4 50.0%
25 1974 — — — — 15 6 21 71.4% 24 5 29 82.8% 16 2 18 88.9% 1971 — — — — 0 2 2 0.0% 0 1 1 0.0% 1 6 7 14.3%
26 1975 6 3 9 66.7% 10 4 14 71.4% 9 3 12 75.0% 13 7 20 65.0% 1972 1 1 2 50.0% 0 1 1 0.0% — — — — — — — —
27 1976 2 1 3 66.7% 1 1 2 50.0% 13 2 15 86.7% 9 6 15 60.0% 1973 0 1 1 0.0% — — — — 0 1 1 0.0% — — — —
28 1977 — — — — — — — — — — — — 6 5 11 54.5% 1974 — — — — — — — — — — — — 0 1 1 0.0%
30 1979 — — — — 2 0 2 100.0% — — — — — — — — — — — — — — — — — — — — — — — — —
Career — 8 4 12 66.7% 90 33 123 73.2% 121 38 159 76.1% 87 31 118 73.7% — 10 12 22 45.5% 63 24 87 72.4% 8 11 19 42.1% 11 13 24 45.8%

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 Olga Morozova Stephanie Defina
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
19 1968 1571 109.1 — — — — -7 +18 -53 54.7% +0.41 4–3 (57%) — — +1.00 — — — — — — — — — — — — — — — —
20 1969 1766 133.7 — — — — +72 -72 -119 70.9% +1.50 5–3 (63%) — — +1.35 — — — — — — — — — — — — — — — —
21 1970 1913 140.4 — — — — -10 -85 -65 75.9% +1.89 8–4 (67%) — — +1.77 — — — — — — — — — — — — — — — —
22 1971 1874 134.0 — — — — +62 -36 -12 67.6% +1.50 6–2 (75%) 1–1 — +0.73 1968 1678 117.2 — — — — -196 +95 -126 56.8% +0.45 13–9 (59%) — — -1.36
23 1972 1975 148.0 — — — — -47 -51 +58 75.2% +2.13 10–5 (67%) 0–4 (0%) 99.6 +4.28 1969 1761 138.3 — — — — -91 +61 — 71.6% +1.86 3–3 (50%) — — +0.05
24 1973 2014 149.3 — — — — -72 -48 +78 71.7% +1.76 8–6 (57%) 0–1 — +1.92 1970 1789 133.4 — — — — -88 +98 -231 62.9% +1.05 7–4 (64%) 1–0 — +0.80
25 1974 2210 166.2 — — — — -35 -160 +47 74.5% +1.65 12–3 (80%) 4–1 (80%) 111.8 -9.30 1971 1707 111.7 — — — — -58 — — 10.0% -2.90 — — — -0.83
26 1975 2069 159.9 — — — — +42 -19 +139 64.3% +1.22 12–3 (80%) 4–7 (36%) 101.0 -3.34 1972 1714 107.0 — — — — — — — 33.3% -1.83 — 1–0 — -0.95
27 1976 2046 152.6 — — — — +6 — +210 66.2% +1.56 6–3 (67%) 1–3 (25%) 97.3 -2.07 1973 1686 100.5 — — — — — — — 0.0% -3.50 — — — -0.40
28 1977 2031 131.4 — — — — -6 — — 57.1% +0.43 1–0 1–1 — -1.67 1974 1675 102.4 — — — — — — — 0.0% -1.50 — 0–1 — -0.06
30 1979 2042 109.2 — — — — — — — 80.0% +1.80 1–0 1–0 — +0.03 — — — — — — — — — — — — — — — —
31 1980 2043 100.8 — — — — — — — 66.7% +1.00 1–0 0–1 — +0.05 — — — — — — — — — — — — — — — —
Career — 2221 154.4 — — — — -1 -65 +42 70.1% +1.58 74–32 (70%) 12–19 (39%) 104.4 -1.23 — 1819 129.6 — — — — -120 +87 -145 57.7% +0.65 23–16 (59%) 2–1 (67%) 104.5 -1.80

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.