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

Jun Kamiwazumi vs Billy Martin H2H: 1-1

Jun Kamiwazumi and Billy Martin are tied 1–1 in their ATP head-to-head. Across 2 main-draw meetings, Jun Kamiwazumi leads 1–0 on carpet, while Billy Martin leads 1–0 on clay. Most recently, Billy Martin won the 1976 Roland Garros round of 128 3-6 6-0 6-4 7-5.

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
1 – 1
2 main draw meetings
Billy Martin
USA Age 69 Right-Handed 178 cm / 5'10"

H2H Match Log

PlayerScorePlayerMatch DataDateRoundTournamentCategorySurface
Billy Martin 3-6 6-0 6-4 7-5 Jun Kamiwazumi Match data Jun 2, 1976* R128 Roland Garros Grand Slam Clay
Jun Kamiwazumi #98 4-6 6-3 6-1 Billy Martin #32 Match data Mar 13, 1975* R32 Washington Indoor Wct ATP 250 Carpet

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
Billy Martin #831 #32 0 1,821 146 175 45.5% 0 0 0 0 1 1

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 Billy Martin
YrW-LWin %RankEloGSTitles YrW-LWin %RankEloGSTitles
15 — — — — — — — 1972 0–1 0.0% — 1,498 0 0
16 — — — — — — — 1973 4–7 36.4% #145 1,536 0 0
17 — — — — — — — 1974 18–14 56.2% #36 1,676 0 0
18 — — — — — — — 1975 18–16 52.9% #67 1,714 0 1
19 — — — — — — — 1976 29–31 48.3% #62 1,701 0 1
20 1968 1–1 50.0% — 1,498 0 0 1977 28–29 49.1% #58 1,792 0 1
21 1969 0–1 0.0% — 1,483 0 0 1978 9–23 28.1% #188 1,665 0 1
22 — — — — — — — 1979 14–14 50.0% #66 1,680 0 1
23 1971 6–5 54.5% — 1,535 0 0 1980 15–24 38.5% #118 1,608 0 1
24 1972 13–13 50.0% — 1,538 0 0 1981 10–15 40.0% — 1,577 0 1
25 1973 10–16 38.5% #94 1,526 0 0 1982 1–1 50.0% — 1,588 0 1
26 1974 14–22 38.9% #100 1,579 0 0 — — — — — — —
27 1975 11–23 32.4% #127 1,570 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 Billy Martin
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 %
15 — — — — — — — — — — — — — — — — — 1972 — — — — — — — — 0 1 1 0.0% — — — —
16 — — — — — — — — — — — — — — — — — 1973 0 2 2 0.0% 0 2 2 0.0% 2 2 4 50.0% 2 1 3 66.7%
17 — — — — — — — — — — — — — — — — — 1974 4 3 7 57.1% 5 2 7 71.4% 0 2 2 0.0% 9 7 16 56.3%
18 — — — — — — — — — — — — — — — — — 1975 3 3 6 50.0% 2 5 7 28.6% — — — — 13 8 21 61.9%
19 — — — — — — — — — — — — — — — — — 1976 2 6 8 25.0% 13 10 23 56.5% 3 3 6 50.0% 11 12 23 47.8%
20 1968 — — — — — — — — 1 1 2 50.0% — — — — 1977 11 10 21 52.4% 6 6 12 50.0% 5 3 8 62.5% 6 10 16 37.5%
21 1969 — — — — — — — — 0 1 1 0.0% — — — — 1978 0 2 2 0.0% 4 10 14 28.6% 4 3 7 57.1% 1 8 9 11.1%
22 — — — — — — — — — — — — — — — — — 1979 6 6 12 50.0% 4 4 8 50.0% 0 1 1 0.0% 4 3 7 57.1%
23 1971 4 3 7 57.1% 0 1 1 0.0% 2 1 3 66.7% — — — — 1980 5 7 12 41.7% 3 6 9 33.3% 4 5 9 44.4% 3 6 9 33.3%
24 1972 5 3 8 62.5% 6 5 11 54.5% 2 5 7 28.6% — — — — 1981 3 5 8 37.5% 5 7 12 41.7% 2 3 5 40.0% — — — —
25 1973 2 3 5 40.0% 2 6 8 25.0% 6 7 13 46.2% — — — — 1982 — — — — — — — — — — — — 1 1 2 50.0%
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% — — — — — — — — — — — — — — — — —
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% — 34 44 78 43.6% 42 52 94 44.7% 20 23 43 46.5% 50 56 106 47.2%

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 Billy Martin
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
15 — — — — — — — — — — — — — — — — 1972 1498 111.7 — — — — — — — 25.0% -2.00 — — — -0.28
16 — — — — — — — — — — — — — — — — 1973 1536 117.4 — — — — +49 — +38 39.3% -0.68 0–1 — — -0.12
17 — — — — — — — — — — — — — — — — 1974 1677 129.0 — — — — +16 -52 — 53.4% -0.03 4–7 (36%) 10–2 (83%) 104.3 +1.49
18 — — — — — — — — — — — — — — — — 1975 1714 138.7 — — — — +86 -137 — 51.9% -0.03 6–6 (50%) 10–1 (91%) 106.7 +0.47
19 — — — — — — — — — — — — — — — — 1976 1702 146.0 — — — — +33 0 -182 49.3% -0.08 6–13 (32%) 5–5 (50%) 96.1 -2.86
20 1968 1498 97.2 — — — — — — — 50.0% -0.83 — — — +0.25 1977 1793 146.8 — — — — -15 -102 -130 52.2% -0.03 4–12 (25%) 4–6 (40%) 93.1 -2.58
21 1969 1483 95.1 — — — — — — — 0.0% -4.50 — — — +0.04 1978 1665 137.0 — — — — -32 -6 +57 36.1% -1.01 3–8 (27%) 9–3 (75%) 99.3 -2.93
22 — — — — — — — — — — — — — — — — 1979 1680 132.8 — — — — +4 -7 — 51.4% -0.33 3–5 (38%) 7–3 (70%) 103.6 +1.16
23 1971 1535 104.7 — — — — +40 — +24 52.8% -0.42 1–2 (33%) 4–0 (100%) 102.6 +1.62 1980 1609 126.7 — — — — +37 +11 +57 40.2% -0.73 4–6 (40%) 5–4 (56%) 99.6 -0.92
24 1972 1538 106.9 — — — — +68 +51 -34 47.8% -0.15 6–3 (67%) 1–2 (33%) 103.3 +3.47 1981 1577 119.0 — — — — +36 +39 +70 41.9% -0.84 2–3 (40%) 5–2 (71%) 100.5 +1.85
25 1973 1527 111.0 — — — — +83 -10 +16 39.7% -0.59 5–3 (63%) 5–6 (45%) 103.9 +1.56 1982 1588 105.2 — — — — — — — 40.0% -1.00 1–0 1–0 — +0.08
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 — — — — — — — — — — — — — — — —
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 — 1821 142.5 — — — — +23 -23 -18 47.0% -0.36 33–61 (35%) 56–26 (68%) 104.7 -1.45

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.