H2H data updated: 2026-09-03 00:00 UTC

Jun Kamiwazumi vs Owen Davidson H2H: 0-1

Owen Davidson holds a 1–0 lead over Jun Kamiwazumi in their ATP head-to-head. Across 1 main-draw meeting, Owen Davidson leads 1–0 on hard courts. Most recently, Owen Davidson won the 1975 Maui round of 32 6-3 7-6.

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
Owen Davidson
AUS Left-Handed 185 cm / 6'1"

H2H Match Log

PlayerScorePlayerMatch DataDateRoundTournamentCategorySurface
Owen Davidson 6-3 7-6 Jun Kamiwazumi Match data Oct 8, 1975* R32 Maui 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
Owen Davidson #662 #73 0 1,806 89 111 44.5% 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 Owen Davidson
YrW-LWin %RankEloGSTitles YrW-LWin %RankEloGSTitles
20 1968 1–1 50.0% — 1,498 0 0 — — — — — — —
21 1969 0–1 0.0% — 1,483 0 0 — — — — — — —
23 1971 6–5 54.5% — 1,535 0 0 — — — — — — —
24 1972 13–13 50.0% — 1,538 0 0 1968 8–6 57.1% — 1,530 0 0
25 1973 10–16 38.5% #94 1,526 0 0 1969 14–12 53.8% — 1,660 0 0
26 1974 14–22 38.9% #100 1,579 0 0 1970 23–24 48.9% — 1,667 0 0
27 1975 11–23 32.4% #127 1,570 0 0 1971 21–29 42.0% — 1,684 0 0
28 1976 1–10 9.1% #206 1,515 0 0 1972 2–12 14.3% — 1,621 0 0
29 1977 1–2 33.3% #264 1,523 0 0 1973 15–12 55.6% #147 1,665 0 0
30 1978 2–2 50.0% #284 1,549 0 0 1974 5–13 27.8% #111 1,614 0 0
31 1979 3–1 75.0% #257 1,589 0 0 1975 1–1 50.0% #252 1,617 0 0
32 1980 2–2 50.0% #269 1,595 0 0 1976 0–1 0.0% #360 1,615 0 0
35 — — — — — — — 1979 0–1 0.0% #662 1,606 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 Owen Davidson
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 %
20 1968 — — — — — — — — 1 1 2 50.0% — — — — — — — — — — — — — — — — — — — — —
21 1969 — — — — — — — — 0 1 1 0.0% — — — — — — — — — — — — — — — — — — — — —
23 1971 4 3 7 57.1% 0 1 1 0.0% 2 1 3 66.7% — — — — — — — — — — — — — — — — — — — — —
24 1972 5 3 8 62.5% 6 5 11 54.5% 2 5 7 28.6% — — — — 1968 0 2 2 0.0% 2 1 3 66.7% 2 2 4 50.0% 4 1 5 80.0%
25 1973 2 3 5 40.0% 2 6 8 25.0% 6 7 13 46.2% — — — — 1969 0 1 1 0.0% 7 5 12 58.3% 5 4 9 55.6% 2 2 4 50.0%
26 1974 2 4 6 33.3% 10 11 21 47.6% 0 2 2 0.0% 2 5 7 28.6% 1970 3 5 8 37.5% 3 5 8 37.5% 17 10 27 63.0% 0 4 4 0.0%
27 1975 0 5 5 0.0% 7 10 17 41.2% 1 2 3 33.3% 3 6 9 33.3% 1971 4 8 12 33.3% 2 8 10 20.0% 10 6 16 62.5% 5 7 12 41.7%
28 1976 0 2 2 0.0% 1 6 7 14.3% 0 2 2 0.0% — — — — 1972 1 2 3 33.3% 0 2 2 0.0% 1 2 3 33.3% 0 6 6 0.0%
29 1977 — — — — 1 1 2 50.0% 0 1 1 0.0% — — — — 1973 3 2 5 60.0% 0 3 3 0.0% 12 4 16 75.0% 0 3 3 0.0%
30 1978 — — — — 2 1 3 66.7% — — — — 0 1 1 0.0% 1974 3 5 8 37.5% 1 3 4 25.0% 1 2 3 33.3% 0 3 3 0.0%
31 1979 — — — — 3 1 4 75.0% — — — — — — — — 1975 1 1 2 50.0% — — — — — — — — — — — —
32 1980 — — — — 2 1 3 66.7% — — — — 0 1 1 0.0% 1976 — — — — — — — — — — — — 0 1 1 0.0%
35 — — — — — — — — — — — — — — — — — 1979 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% — 15 27 42 35.7% 15 27 42 35.7% 48 30 78 61.5% 11 27 38 28.9%

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 Owen Davidson
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
20 1968 1498 97.2 — — — — — — — 50.0% -0.83 — — — +0.25 — — — — — — — — — — — — — — — —
21 1969 1483 95.1 — — — — — — — 0.0% -4.50 — — — +0.04 — — — — — — — — — — — — — — — —
23 1971 1535 104.7 — — — — +40 — +24 52.8% -0.42 1–2 (33%) 4–0 (100%) — +1.62 — — — — — — — — — — — — — — — —
24 1972 1538 106.9 — — — — +68 +51 -34 47.8% -0.15 6–3 (67%) 1–2 (33%) — +3.47 1968 1531 109.6 — — — — +18 +18 -41 50.0% +0.19 2–2 (50%) — — -0.14
25 1973 1527 111.0 — — — — +83 -10 +16 39.7% -0.59 5–3 (63%) 5–6 (45%) — +1.56 1969 1661 127.4 — — — — -84 -9 -71 55.7% +0.71 3–3 (50%) — — -1.30
26 1974 1580 122.2 — — — — -11 +26 — 38.8% -0.85 5–6 (45%) 5–3 (63%) — +0.26 1970 1667 136.1 — — — — -120 -53 +72 52.4% +0.23 4–8 (33%) 2–5 (29%) — -1.05
27 1975 1570 124.1 — — — — -82 +30 -44 37.5% -0.76 2–5 (29%) 4–3 (57%) — -0.39 1971 1685 139.9 — — — — -37 -124 +112 40.5% -0.57 3–5 (38%) 3–7 (30%) — -5.35
28 1976 1515 119.6 — — — — — +32 — 14.8% -2.19 1–1 0–3 (0%) — -1.33 1972 1621 122.9 — — — — -39 — +125 18.2% -2.00 1–2 (33%) 2–2 (50%) — -1.30
29 1977 1523 106.2 — — — — — — — 42.9% -1.14 0–1 — — -0.19 1973 1665 126.1 — — — — -70 -141 +127 55.9% +0.32 3–5 (38%) 2–1 (67%) — +0.45
30 1978 1550 104.9 — — — — — +38 — 50.0% -0.40 1–1 1–1 — -0.01 1974 1615 121.5 — — — — -69 -106 +129 29.3% -1.17 0–3 (0%) 1–5 (17%) — -1.34
31 1979 1589 113.2 — — — — — +30 — 75.0% +1.75 — 0–1 — +0.47 1975 1617 100.3 — — — — — — — 50.0% -0.50 — 1–0 — +0.34
32 1980 1596 103.5 — — — — — +22 — 40.0% -0.20 2–0 1–1 — +0.26 1976 1616 108.2 — — — — — — — 33.3% -2.00 0–1 — — -0.29
35 — — — — — — — — — — — — — — — — 1979 1607 99.1 — — — — — — — 0.0% -5.00 — — — -0.12
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 — 1806 135.9 — — — — -56 -64 +73 45.8% -0.19 16–29 (36%) 11–20 (35%) 93.7 -5.21

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.