H2H data updated: 2026-09-05 00:00 UTC

Jun Kamiwazumi vs Paul Gerken H2H: 0-1

Paul Gerken holds a 1–0 lead over Jun Kamiwazumi in their ATP head-to-head. Across 1 main-draw meeting, Paul Gerken leads 1–0 on hard courts. Most recently, Paul Gerken won the 1975 San Antonio Wct round of 32 6-4 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.

Jun Kamiwazumi
JPN Age 78 Right-Handed
H2H
0 – 1
1 main draw meetings
Paul Gerken
USA Age 76 Right-Handed 185 cm / 6'1"

H2H Match Log

PlayerScorePlayerMatch DataDateRoundTournamentCategorySurface
Paul Gerken 6-4 6-0 Jun Kamiwazumi Match data Feb 26, 1975* R32 San Antonio Wct ATP 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
Jun Kamiwazumi #808 #78 0 1,624 64 99 39.3% 0 0 0 0 0 0
Paul Gerken #496 #35 0 1,836 122 127 49.0% 0 0 0 0 0 0

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 Jun Kamiwazumi Paul Gerken
YrW-LWin %RankEloGSTitles YrW-LWin %RankEloGSTitles
18 — — — — — — — 1968 4–3 57.1% — 1,540 0 0
19 — — — — — — — 1969 4–8 33.3% — 1,514 0 0
20 1968 1–1 50.0% — 1,498 0 0 1970 3–7 30.0% — 1,513 0 0
21 1969 0–1 0.0% — 1,483 0 0 1971 7–9 43.8% — 1,558 0 0
22 — — — — — — — 1972 14–12 53.8% — 1,651 0 0
23 1971 6–5 54.5% — 1,535 0 0 1973 50–33 60.2% #50 1,761 0 0
24 1972 13–13 50.0% — 1,538 0 0 1974 23–31 42.6% #65 1,649 0 0
25 1973 10–16 38.5% #94 1,526 0 0 1975 14–19 42.4% #80 1,610 0 0
26 1974 14–22 38.9% #100 1,579 0 0 — — — — — — —
27 1975 11–23 32.4% #127 1,570 0 0 1977 3–5 37.5% — 1,601 0 0
28 1976 1–10 9.1% #206 1,515 0 0 — — — — — — —
29 1977 1–2 33.3% #264 1,523 0 0 — — — — — — —
30 1978 2–2 50.0% #284 1,549 0 0 — — — — — — —
31 1979 3–1 75.0% #257 1,589 0 0 — — — — — — —
32 1980 2–2 50.0% #269 1,595 0 0 — — — — — — —
36 1984 0–1 0.0% #745 1,581 0 0 — — — — — — —

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 Jun Kamiwazumi Paul Gerken
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 %
18 — — — — — — — — — — — — — — — — — 1968 2 1 3 66.7% — — — — 2 2 4 50.0% — — — —
19 — — — — — — — — — — — — — — — — — 1969 — — — — 1 3 4 25.0% 3 5 8 37.5% — — — —
20 1968 — — — — — — — — 1 1 2 50.0% — — — — 1970 0 1 1 0.0% 1 3 4 25.0% 2 2 4 50.0% 0 1 1 0.0%
21 1969 — — — — — — — — 0 1 1 0.0% — — — — 1971 3 4 7 42.9% 3 4 7 42.9% 1 1 2 50.0% — — — —
22 — — — — — — — — — — — — — — — — — 1972 2 3 5 40.0% 6 4 10 60.0% 2 2 4 50.0% 4 3 7 57.1%
23 1971 4 3 7 57.1% 0 1 1 0.0% 2 1 3 66.7% — — — — 1973 20 11 31 64.5% 19 14 33 57.6% 5 4 9 55.6% 6 4 10 60.0%
24 1972 5 3 8 62.5% 6 5 11 54.5% 2 5 7 28.6% — — — — 1974 6 10 16 37.5% 7 10 17 41.2% 3 3 6 50.0% 7 8 15 46.7%
25 1973 2 3 5 40.0% 2 6 8 25.0% 6 7 13 46.2% — — — — 1975 3 3 6 50.0% 1 6 7 14.3% 1 2 3 33.3% 9 8 17 52.9%
26 1974 2 4 6 33.3% 10 11 21 47.6% 0 2 2 0.0% 2 5 7 28.6% — — — — — — — — — — — — — — — — —
27 1975 0 5 5 0.0% 7 10 17 41.2% 1 2 3 33.3% 3 6 9 33.3% 1977 1 1 2 50.0% 2 3 5 40.0% 0 1 1 0.0% — — — —
28 1976 0 2 2 0.0% 1 6 7 14.3% 0 2 2 0.0% — — — — — — — — — — — — — — — — — — — — —
29 1977 — — — — 1 1 2 50.0% 0 1 1 0.0% — — — — — — — — — — — — — — — — — — — — —
30 1978 — — — — 2 1 3 66.7% — — — — 0 1 1 0.0% — — — — — — — — — — — — — — — — —
31 1979 — — — — 3 1 4 75.0% — — — — — — — — — — — — — — — — — — — — — — — — —
32 1980 — — — — 2 1 3 66.7% — — — — 0 1 1 0.0% — — — — — — — — — — — — — — — — —
36 1984 0 1 1 0.0% — — — — — — — — — — — — — — — — — — — — — — — — — — — — —
Career — 13 21 34 38.2% 34 43 77 44.2% 12 22 34 35.3% 5 13 18 27.8% — 37 34 71 52.1% 40 47 87 46.0% 19 22 41 46.3% 26 24 50 52.0%

Advanced Statistics Comparison by Age

Seasons are aligned by the age each player spent most of that calendar year. Metrics are precomputed from eligible main-draw results; point-stat values use the available detailed sample. 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 Jun Kamiwazumi Paul Gerken
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
18 — — — — — — — — — — — — — — — — 1968 1541 101.1 — — — — +35 — -12 42.1% +0.05 1–0 — — -0.33
19 — — — — — — — — — — — — — — — — 1969 1515 107.8 — — — — — -30 -14 43.8% -0.13 1–5 (17%) — — -0.40
20 1968 1498 97.2 — — — — — — — 50.0% -0.83 — — — +0.25 1970 1514 114.4 — — — — — -33 +11 37.5% -0.46 0–2 1–0 — -0.12
21 1969 1483 95.1 — — — — — — — 0.0% -4.50 — — — +0.04 1971 1559 109.6 — — — — -25 -50 — 47.6% +0.10 4–4 (50%) 2–5 (29%) 99.0 +0.82
22 — — — — — — — — — — — — — — — — 1972 1652 124.6 — — — — -35 -63 -66 52.8% +0.39 7–6 (54%) 6–7 (46%) 102.0 +2.20
23 1971 1535 104.7 — — — — +40 — +24 52.8% -0.42 1–2 (33%) 4–0 (100%) 102.6 +1.62 1973 1761 139.8 — — — — +36 -27 -117 56.3% +0.65 19–11 (63%) 16–17 (48%) 105.2 +1.13
24 1972 1538 106.9 — — — — +68 +51 -34 47.8% -0.15 6–3 (67%) 1–2 (33%) 103.3 +3.47 1974 1649 124.9 — — — — +35 -15 -16 46.9% -0.35 8–13 (38%) 13–9 (59%) 96.8 -0.35
25 1973 1527 111.0 — — — — +83 -10 +16 39.7% -0.59 5–3 (63%) 5–6 (45%) 103.9 +1.56 1975 1611 129.1 — — — — +120 -74 +20 42.7% -0.56 7–7 (50%) 10–6 (63%) 104.1 -0.79
26 1974 1580 122.2 — — — — -11 +26 — 38.8% -0.85 5–6 (45%) 5–3 (63%) 102.2 +0.26 — — — — — — — — — — — — — — — —
27 1975 1570 124.1 — — — — -82 +30 -44 37.5% -0.76 2–5 (29%) 4–3 (57%) 97.0 -0.39 1977 1601 119.0 — — — — — -51 — 38.9% -0.39 1–1 1–2 (33%) — +0.38
28 1976 1515 119.6 — — — — — +32 — 14.8% -2.19 1–1 0–3 (0%) — -1.33 — — — — — — — — — — — — — — — —
29 1977 1523 106.2 — — — — — — — 42.9% -1.14 0–1 — — -0.19 — — — — — — — — — — — — — — — —
30 1978 1550 104.9 — — — — — +38 — 50.0% -0.40 1–1 1–1 — -0.01 — — — — — — — — — — — — — — — —
31 1979 1589 113.2 — — — — — +30 — 75.0% +1.75 — 0–1 — +0.47 — — — — — — — — — — — — — — — —
32 1980 1596 103.5 — — — — — +22 — 40.0% -0.20 2–0 1–1 — +0.26 — — — — — — — — — — — — — — — —
36 1984 1581 98.5 — — — — — — — 0.0% -3.50 — — — +0.05 — — — — — — — — — — — — — — — —
Career — 1624 119.2 — — — — -1 +28 -3 40.7% -0.68 23–22 (51%) 21–20 (51%) 104.4 +3.76 — 1837 131.8 — — — — +41 -36 -39 49.2% +0.08 48–49 (49%) 49–46 (52%) 101.6 +1.03

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.