H2H data updated: 2026-09-02 00:00 UTC

Jun Kamiwazumi vs Ross Case H2H: 0-2

Ross Case holds a 2–0 lead over Jun Kamiwazumi in their ATP head-to-head. Across 2 main-draw meetings, Ross Case leads 1–0 on grass and 1–0 on hard courts. Most recently, Ross Case won the 1971 Dutch Open semifinal 5-7 3-6 6-3 6-3 6-2.

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Jun Kamiwazumi
JPN Age 78 Right-Handed
H2H
0 – 2
2 main draw meetings
Ross Case
AUS Age 74 Right-Handed

H2H Match Log

PlayerScorePlayerMatch DataDateRoundTournamentCategorySurface
Ross Case 5-7 3-6 6-3 6-3 6-2 Jun Kamiwazumi Match data Aug 8, 1971* SF Dutch Open ATP 250 Hard
Ross Case 6-2 6-1 Jun Kamiwazumi Match data Jan 1, 1969* R64 Hobart ATP 250 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
Jun Kamiwazumi #808 #78 0 1,624 64 99 39.3% 0 0 0 0 0 0
Ross Case #758 #24 0 1,962 293 274 51.7% 0 0 0 0 4 4

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 Ross Case
YrW-LWin %RankEloGSTitles YrW-LWin %RankEloGSTitles
16 — — — — — — — 1968 3–3 50.0% — 1,519 0 0
17 — — — — — — — 1969 4–4 50.0% — 1,538 0 0
18 — — — — — — — 1970 11–8 57.9% — 1,560 0 0
19 — — — — — — — 1971 26–20 56.5% — 1,637 0 0
20 1968 1–1 50.0% — 1,498 0 0 1972 22–21 51.2% — 1,685 0 0
21 1969 0–1 0.0% — 1,483 0 0 1973 42–34 55.3% #42 1,811 0 1
22 — — — — — — — 1974 42–27 60.9% #29 1,820 0 2
23 1971 6–5 54.5% — 1,535 0 0 1975 38–21 64.4% #27 1,936 0 4
24 1972 13–13 50.0% — 1,538 0 0 1976 28–24 53.8% #45 1,837 0 4
25 1973 10–16 38.5% #94 1,526 0 0 1977 21–24 46.7% #48 1,749 0 4
26 1974 14–22 38.9% #100 1,579 0 0 1978 14–19 42.4% #86 1,679 0 4
27 1975 11–23 32.4% #127 1,570 0 0 1979 24–26 48.0% #74 1,676 0 4
28 1976 1–10 9.1% #206 1,515 0 0 1980 11–20 35.5% #163 1,621 0 4
29 1977 1–2 33.3% #264 1,523 0 0 1981 5–15 25.0% — 1,502 0 4
30 1978 2–2 50.0% #284 1,549 0 0 1982 1–5 16.7% — 1,467 0 4
31 1979 3–1 75.0% #257 1,589 0 0 1983 1–3 25.0% #415 1,458 0 4
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 Ross Case
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 %
16 — — — — — — — — — — — — — — — — — 1968 — — — — — — — — 3 3 6 50.0% — — — —
17 — — — — — — — — — — — — — — — — — 1969 — — — — — — — — 4 4 8 50.0% — — — —
18 — — — — — — — — — — — — — — — — — 1970 0 2 2 0.0% 1 3 4 25.0% 10 3 13 76.9% — — — —
19 — — — — — — — — — — — — — — — — — 1971 10 8 18 55.6% 2 5 7 28.6% 14 7 21 66.7% — — — —
20 1968 — — — — — — — — 1 1 2 50.0% — — — — 1972 6 7 13 46.2% 0 3 3 0.0% 11 7 18 61.1% 5 4 9 55.6%
21 1969 — — — — — — — — 0 1 1 0.0% — — — — 1973 10 5 15 66.7% 17 14 31 54.8% 11 7 18 61.1% 4 8 12 33.3%
22 — — — — — — — — — — — — — — — — — 1974 15 13 28 53.6% 8 6 14 57.1% 9 5 14 64.3% 10 3 13 76.9%
23 1971 4 3 7 57.1% 0 1 1 0.0% 2 1 3 66.7% — — — — 1975 21 8 29 72.4% 8 6 14 57.1% 7 2 9 77.8% 2 5 7 28.6%
24 1972 5 3 8 62.5% 6 5 11 54.5% 2 5 7 28.6% — — — — 1976 5 6 11 45.5% 5 4 9 55.6% 8 4 12 66.7% 10 10 20 50.0%
25 1973 2 3 5 40.0% 2 6 8 25.0% 6 7 13 46.2% — — — — 1977 8 8 16 50.0% 0 1 1 0.0% 8 7 15 53.3% 5 8 13 38.5%
26 1974 2 4 6 33.3% 10 11 21 47.6% 0 2 2 0.0% 2 5 7 28.6% 1978 4 6 10 40.0% 2 2 4 50.0% 6 5 11 54.5% 2 6 8 25.0%
27 1975 0 5 5 0.0% 7 10 17 41.2% 1 2 3 33.3% 3 6 9 33.3% 1979 4 7 11 36.4% 10 9 19 52.6% 9 5 14 64.3% 1 5 6 16.7%
28 1976 0 2 2 0.0% 1 6 7 14.3% 0 2 2 0.0% — — — — 1980 2 3 5 40.0% 7 9 16 43.8% 1 4 5 20.0% 1 4 5 20.0%
29 1977 — — — — 1 1 2 50.0% 0 1 1 0.0% — — — — 1981 1 7 8 12.5% 2 4 6 33.3% 2 3 5 40.0% 0 1 1 0.0%
30 1978 — — — — 2 1 3 66.7% — — — — 0 1 1 0.0% 1982 0 1 1 0.0% — — — — 0 2 2 0.0% 1 2 3 33.3%
31 1979 — — — — 3 1 4 75.0% — — — — — — — — 1983 1 2 3 33.3% — — — — — — — — 0 1 1 0.0%
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% — 87 83 170 51.2% 62 66 128 48.4% 103 68 171 60.2% 41 57 98 41.8%

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 Ross Case
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
16 — — — — — — — — — — — — — — — — 1968 1519 97.0 — — — — — — +27 50.0% -0.57 1–1 — — +0.29
17 — — — — — — — — — — — — — — — — 1969 1538 111.9 — — — — — — +28 40.0% -0.15 2–0 — — +0.09
18 — — — — — — — — — — — — — — — — 1970 1560 109.1 — — — — — -78 +73 50.0% -0.02 4–2 (67%) 1–1 — +2.54
19 — — — — — — — — — — — — — — — — 1971 1638 118.4 — — — — -15 -130 +69 53.8% +0.08 7–3 (70%) 6–9 (40%) — +3.95
20 1968 1498 97.2 — — — — — — — 50.0% -0.83 — — — +0.25 1972 1685 119.5 — — — — +8 -217 +88 53.0% -0.09 6–6 (50%) 7–2 (78%) — +2.54
21 1969 1483 95.1 — — — — — — — 0.0% -4.50 — — — +0.04 1973 1811 144.2 — — — — -4 -97 -10 53.1% +0.25 14–8 (64%) 7–15 (32%) — -2.77
22 — — — — — — — — — — — — — — — — 1974 1820 143.4 — — — — +14 -88 +26 57.1% +0.54 13–8 (62%) 12–9 (57%) — -2.23
23 1971 1535 104.7 — — — — +40 — +24 52.8% -0.42 1–2 (33%) 4–0 (100%) — +1.62 1975 1937 143.0 — — — — +8 -189 -46 59.7% +0.58 15–10 (60%) 11–3 (79%) — +0.72
24 1972 1538 106.9 — — — — +68 +51 -34 47.8% -0.15 6–3 (67%) 1–2 (33%) — +3.47 1976 1837 150.4 — — — — +17 -79 +82 54.5% +0.20 7–11 (39%) 13–14 (48%) — -3.31
25 1973 1527 111.0 — — — — +83 -10 +16 39.7% -0.59 5–3 (63%) 5–6 (45%) — +1.56 1977 1750 141.1 — — — — +2 — +96 44.0% -0.15 9–6 (60%) 5–8 (38%) — -3.52
26 1974 1580 122.2 — — — — -11 +26 — 38.8% -0.85 5–6 (45%) 5–3 (63%) — +0.26 1978 1679 126.3 — — — — -11 +32 +126 46.0% -0.43 7–11 (39%) 6–4 (60%) — +0.45
27 1975 1570 124.1 — — — — -82 +30 -44 37.5% -0.76 2–5 (29%) 4–3 (57%) — -0.39 1979 1676 135.6 — — — — -77 +31 +155 47.7% -0.18 9–8 (53%) 6–10 (38%) — -2.48
28 1976 1515 119.6 — — — — — +32 — 14.8% -2.19 1–1 0–3 (0%) — -1.33 1980 1621 128.5 — — — — -49 +77 +125 40.5% -0.63 4–6 (40%) 5–7 (42%) — -0.60
29 1977 1523 106.2 — — — — — — — 42.9% -1.14 0–1 — — -0.19 1981 1503 104.6 — — — — -34 +123 +209 31.4% -1.16 2–5 (29%) 1–4 (20%) — +1.19
30 1978 1550 104.9 — — — — — +38 — 50.0% -0.40 1–1 1–1 — -0.01 1982 1467 105.7 — — — — +2 — — 25.0% -1.12 1–1 0–2 — +0.37
31 1979 1589 113.2 — — — — — +30 — 75.0% +1.75 — 0–1 — +0.47 1983 1459 103.5 — — — — -6 — — 36.4% -0.82 1–2 (33%) 2–3 (40%) — +0.31
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 — 1962 139.3 — — — — -4 -53 +70 50.7% +0.02 102–88 (54%) 82–91 (47%) 99.4 -0.44

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.