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

Kaoru Okamoto vs Louise Allen H2H: 1-0

Kaoru Okamoto holds a 1–0 lead over Louise Allen in their WTA head-to-head. Across 1 main-draw meeting, Kaoru Okamoto leads 1–0 on hard courts. Most recently, Kaoru Okamoto won the 1989 Pan Pacific Open round of 32 2-6 6-2 6-0.

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

Kaoru Okamoto
JPN Age 61 Right-Handed
H2H
1 – 0
1 main-draw meetings
Louise Allen
USA Age 64

H2H Match Log

PlayerScorePlayerMatch DataDateRoundTournamentCategorySurface
Kaoru Okamoto #205 2-6 6-2 6-0 Louise Allen Match data Apr 20, 1989* R32 Pan Pacific Open WTA 500 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
Kaoru Okamoto #225 #75 14 1,589 23 44 34.3% 0 0 0 1 0 1
Louise Allen — — — 1,758 67 100 40.1% 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.

Age Kaoru Okamoto Louise Allen
YrW-LWin %RankEloGSTitles YrW-LWin %RankEloGSTitles
13 1978 0–1 0.0% — 1,483 0 0 — — — — — — —
15 1980 0–2 0.0% — 1,466 0 0 — — — — — — —
16 1981 0–3 0.0% — 1,441 0 0 — — — — — — —
18 1983 3–2 60.0% — 1,473 0 0 1980 3–2 60.0% — 1,519 0 0
19 1984 0–1 0.0% #189 1,465 0 0 1981 6–5 54.5% — 1,540 0 0
20 1985 0–1 0.0% — 1,449 0 0 1982 22–5 81.5% — 1,736 0 3
21 1986 2–1 66.7% #151 1,479 0 0 1983 3–7 30.0% — 1,706 0 3
22 1987 6–8 42.9% #107 1,542 0 0 1984 0–1 0.0% — 1,685 0 3
23 1988 1–8 11.1% #208 1,495 0 0 — — — — — — —
24 1989 5–7 41.7% #115 1,507 0 1 1986 0–4 0.0% — 1,611 0 3
25 1990 3–6 33.3% #165 1,496 0 1 1987 3–8 27.3% — 1,564 0 3
26 1991 2–2 50.0% #183 1,534 0 1 1988 5–8 38.5% — 1,584 0 3
27 1992 1–2 33.3% #225 1,535 0 1 1989 9–15 37.5% — 1,561 0 3
28 — — — — — — — 1990 2–9 18.2% — 1,492 0 3
29 — — — — — — — 1991 2–8 20.0% — 1,453 0 3
30 — — — — — — — 1992 10–14 41.7% — 1,576 0 3
31 — — — — — — — 1993 2–14 12.5% — 1,451 0 3

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 Kaoru Okamoto Louise Allen
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 %
13 1978 — — — — 0 1 1 0.0% — — — — — — — — — — — — — — — — — — — — — — — — —
15 1980 — — — — 0 1 1 0.0% — — — — — — — — — — — — — — — — — — — — — — — — —
16 1981 0 2 2 0.0% — — — — — — — — 0 1 1 0.0% — — — — — — — — — — — — — — — — —
18 1983 2 1 3 66.7% — — — — — — — — — — — — — — — — — — — — — — — — — — — — —
19 1984 0 1 1 0.0% — — — — — — — — — — — — 1981 0 1 1 0.0% — — — — — — — — — — — —
20 — — — — — — — — — — — — — — — — — 1982 13 4 17 76.5% 0 1 1 0.0% — — — — — — — —
21 1986 2 1 3 66.7% — — — — — — — — — — — — 1983 1 1 2 50.0% 0 3 3 0.0% 2 3 5 40.0% — — — —
22 1987 3 3 6 50.0% 0 1 1 0.0% 3 3 6 50.0% 0 1 1 0.0% 1984 0 1 1 0.0% — — — — — — — — — — — —
23 1988 0 4 4 0.0% 0 1 1 0.0% 1 2 3 33.3% 0 1 1 0.0% — — — — — — — — — — — — — — — — —
24 1989 5 2 7 71.4% 0 1 1 0.0% 0 3 3 0.0% 0 1 1 0.0% 1986 0 2 2 0.0% 0 1 1 0.0% 0 1 1 0.0% — — — —
25 1990 3 2 5 60.0% 0 1 1 0.0% 0 1 1 0.0% 0 2 2 0.0% 1987 1 3 4 25.0% 2 2 4 50.0% 0 1 1 0.0% 0 2 2 0.0%
26 1991 2 1 3 66.7% — — — — — — — — 0 1 1 0.0% 1988 5 7 12 41.7% — — — — — — — — 0 1 1 0.0%
27 1992 — — — — — — — — — — — — 1 2 3 33.3% 1989 8 12 20 40.0% 0 1 1 0.0% 1 1 2 50.0% 0 1 1 0.0%
28 — — — — — — — — — — — — — — — — — 1990 2 8 10 20.0% — — — — — — — — 0 1 1 0.0%
29 — — — — — — — — — — — — — — — — — 1991 2 6 8 25.0% 0 2 2 0.0% — — — — — — — —
30 — — — — — — — — — — — — — — — — — 1992 7 5 12 58.3% 1 4 5 20.0% 2 3 5 40.0% 0 2 2 0.0%
31 — — — — — — — — — — — — — — — — — 1993 1 6 7 14.3% 1 2 3 33.3% 0 3 3 0.0% 0 3 3 0.0%
Career — 17 17 34 50.0% 0 6 6 0.0% 4 9 13 30.8% 1 9 10 10.0% — 40 56 96 41.7% 4 16 20 20.0% 5 12 17 29.4% 0 10 10 0.0%

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 Kaoru Okamoto Louise Allen
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
13 1978 1484 94.1 — — — — — — — 0.0% -4.50 — — — +0.24 — — — — — — — — — — — — — — — —
15 1980 1466 98.1 — — — — — — — 0.0% -4.00 — — — -0.26 — — — — — — — — — — — — — — — —
16 1981 1441 93.7 — — — — +118 — — 14.3% -3.00 0–1 0–1 — +0.23 — — — — — — — — — — — — — — — —
18 1983 1474 101.6 — — — — +92 — — 53.3% 0.00 3–2 (60%) 1–1 — +0.60 1980 1520 102.6 — — — — — — — 60.0% +0.40 2–0 1–0 — +0.07
19 1984 1466 100.5 — — — — — — — 33.3% -0.67 0–1 — — -0.03 1981 1540 111.9 — — — — — — — 53.6% +0.64 3–3 (50%) 1–3 (25%) 98.7 -0.03
20 1985 1450 92.5 — — — — — — — 0.0% -5.00 — — — +0.04 1982 1736 132.6 — — — — -16 — — 75.4% +2.03 5–2 (71%) 2–2 (50%) 103.9 +2.84
21 1986 1480 106.1 — — — — +81 — — 57.1% +1.43 1–0 0–2 — +0.49 1983 1706 117.7 — — — — — -183 -107 33.3% -1.67 0–1 1–1 — -0.80
22 1987 1543 119.7 — — — — +26 — +59 43.3% -0.07 1–1 0–3 (0%) — +0.51 1984 1686 96.2 — — — — — — — 33.3% -2.67 0–1 — — +0.11
23 1988 1496 101.8 — — — — -12 — +74 20.0% -2.20 0–2 — — -0.11 — — — — — — — — — — — — — — — —
24 1989 1508 102.8 — — — — +50 — +5 42.3% -0.73 1–1 0–1 — +1.66 1986 1612 101.4 — — — — — — — 20.0% -1.50 0–2 0–2 — +0.38
25 1990 1496 100.2 — — — — +51 — — 31.6% -1.11 1–0 0–1 — +0.82 1987 1565 110.9 — — — — +20 -55 — 32.0% -1.28 1–2 (33%) 1–2 (33%) 97.0 +0.16
26 1991 1534 117.3 — — — — +41 — — 50.0% +0.38 — 0–1 — -0.21 1988 1584 119.3 — — — — -2 — — 45.7% -0.20 3–6 (33%) 2–2 (50%) 97.4 -0.03
27 1992 1536 100.8 — — — — +39 — — 28.6% -2.00 1–0 1–1 — +0.29 1989 1561 113.9 — — — — -23 — — 43.1% -0.66 3–7 (30%) 5–2 (71%) 100.1 +0.22
28 — — — — — — — — — — — — — — — — 1990 1493 106.1 — — — — -19 — — 21.7% -1.39 0–1 0–3 (0%) — +0.64
29 — — — — — — — — — — — — — — — — 1991 1453 100.2 — — — — -9 — — 31.8% -1.54 1–3 (25%) 1–0 — +0.75
30 — — — — — — — — — — — — — — — — 1992 1576 125.0 — — — — +2 -118 -27 41.8% -0.80 4–3 (57%) 2–2 (50%) 103.6 -0.19
31 — — — — — — — — — — — — — — — — 1993 1452 91.9 — — — — +19 +6 +65 20.6% -2.12 1–3 (25%) 2–3 (40%) 96.2 +0.76
51 2016 1516 — — — — — — — — — — — — — — — — — — — — — — — — — — — — — —
Career — 1590 107.9 — — — — +47 — +49 36.0% -0.97 8–8 (50%) 2–11 (15%) 94.2 +6.37 — 1759 120.5 — — — — -7 -89 -37 43.6% -0.45 23–34 (40%) 18–22 (45%) 95.9 +2.92

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.