H2H data updated: 2026-09-06 00:00 UTC

Russell Simpson vs Jun Kamiwazumi H2H: 0-1

Jun Kamiwazumi holds a 1–0 lead over Russell Simpson in their ATP head-to-head. Across 1 main-draw meeting, Jun Kamiwazumi leads 1–0 on carpet. Most recently, Jun Kamiwazumi won the 1975 Toronto Indoor Wct round of 32 7-6 6-4.

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

Russell Simpson
NZL Age 72 Right-Handed 188 cm / 6'2"
H2H
0 – 1
1 main-draw meetings
Jun Kamiwazumi
JPN Age 78 Right-Handed

H2H Match Log

PlayerScorePlayerMatch DataDateRoundTournamentCategorySurface
Jun Kamiwazumi 7-6 6-4 Russell Simpson Match data Feb 13, 1975* R32 Toronto 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
Russell Simpson #1,013 #47 0 1,767 131 195 40.2% 0 0 0 0 0 0
Jun Kamiwazumi #808 #78 0 1,624 64 99 39.3% 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 Russell Simpson Jun Kamiwazumi
YrW-LWin %RankEloGSTitles YrW-LWin %RankEloGSTitles
18 1972 0–1 0.0% — 1,470 0 0 — — — — — — —
19 1973 3–3 50.0% — 1,499 0 0 — — — — — — —
20 1974 5–3 62.5% #318 1,527 0 0 1968 1–1 50.0% — 1,498 0 0
21 1975 4–15 21.1% #183 1,483 0 0 1969 0–1 0.0% — 1,483 0 0
22 1976 8–16 33.3% #143 1,486 0 0 — — — — — — —
23 1977 6–15 28.6% #91 1,451 0 0 1971 6–5 54.5% — 1,535 0 0
24 1978 6–11 35.3% #108 1,496 0 0 1972 13–13 50.0% — 1,538 0 0
25 1979 9–17 34.6% #133 1,573 0 0 1973 10–16 38.5% #94 1,526 0 0
26 1980 20–22 47.6% #76 1,696 0 0 1974 14–22 38.9% #100 1,579 0 0
27 1981 15–20 42.9% #88 1,646 0 0 1975 11–23 32.4% #127 1,570 0 0
28 1982 19–18 51.4% #50 1,672 0 0 1976 1–10 9.1% #206 1,515 0 0
29 1983 9–13 40.9% #96 1,584 0 0 1977 1–2 33.3% #264 1,523 0 0
30 1984 9–16 36.0% #121 1,546 0 0 1978 2–2 50.0% #284 1,549 0 0
31 1985 11–11 50.0% #117 1,602 0 0 1979 3–1 75.0% #257 1,589 0 0
32 1986 4–10 28.6% #180 1,537 0 0 1980 2–2 50.0% #269 1,595 0 0
33 1987 3–4 42.9% #324 1,547 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 Russell Simpson Jun Kamiwazumi
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 1972 — — — — — — — — 0 1 1 0.0% — — — — — — — — — — — — — — — — — — — — —
19 1973 1 1 2 50.0% — — — — 2 2 4 50.0% — — — — — — — — — — — — — — — — — — — — —
20 1974 — — — — — — — — 5 3 8 62.5% — — — — 1968 — — — — — — — — 1 1 2 50.0% — — — —
21 1975 0 4 4 0.0% 2 4 6 33.3% 1 2 3 33.3% 1 5 6 16.7% 1969 — — — — — — — — 0 1 1 0.0% — — — —
22 1976 3 5 8 37.5% 3 6 9 33.3% 1 4 5 20.0% 1 1 2 50.0% — — — — — — — — — — — — — — — — —
23 1977 1 6 7 14.3% 1 4 5 20.0% 4 5 9 44.4% — — — — 1971 4 3 7 57.1% 0 1 1 0.0% 2 1 3 66.7% — — — —
24 1978 1 2 3 33.3% 2 2 4 50.0% 3 5 8 37.5% 0 2 2 0.0% 1972 5 3 8 62.5% 6 5 11 54.5% 2 5 7 28.6% — — — —
25 1979 3 7 10 30.0% 2 5 7 28.6% 3 2 5 60.0% 1 3 4 25.0% 1973 2 3 5 40.0% 2 6 8 25.0% 6 7 13 46.2% — — — —
26 1980 11 11 22 50.0% 1 2 3 33.3% 6 5 11 54.5% 2 4 6 33.3% 1974 2 4 6 33.3% 10 11 21 47.6% 0 2 2 0.0% 2 5 7 28.6%
27 1981 8 11 19 42.1% — — — — 6 5 11 54.5% 1 4 5 20.0% 1975 0 5 5 0.0% 7 10 17 41.2% 1 2 3 33.3% 3 6 9 33.3%
28 1982 10 6 16 62.5% 1 4 5 20.0% 7 5 12 58.3% 1 3 4 25.0% 1976 0 2 2 0.0% 1 6 7 14.3% 0 2 2 0.0% — — — —
29 1983 8 6 14 57.1% 0 2 2 0.0% 0 4 4 0.0% 1 1 2 50.0% 1977 — — — — 1 1 2 50.0% 0 1 1 0.0% — — — —
30 1984 4 8 12 33.3% — — — — 5 6 11 45.5% 0 2 2 0.0% 1978 — — — — 2 1 3 66.7% — — — — 0 1 1 0.0%
31 1985 5 4 9 55.6% 0 1 1 0.0% 4 5 9 44.4% 2 1 3 66.7% 1979 — — — — 3 1 4 75.0% — — — — — — — —
32 1986 1 4 5 20.0% — — — — 2 3 5 40.0% 1 3 4 25.0% 1980 — — — — 2 1 3 66.7% — — — — 0 1 1 0.0%
33 1987 2 3 5 40.0% — — — — 1 1 2 50.0% — — — — — — — — — — — — — — — — — — — — —
36 — — — — — — — — — — — — — — — — — 1984 0 1 1 0.0% — — — — — — — — — — — —
Career — 58 78 136 42.6% 12 30 42 28.6% 50 58 108 46.3% 11 29 40 27.5% — 13 21 34 38.2% 34 43 77 44.2% 12 22 34 35.3% 5 13 18 27.8%

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 Russell Simpson Jun Kamiwazumi
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 1972 1470 98.3 — — — — — — — 40.0% -0.60 0–1 0–1 — +0.23 — — — — — — — — — — — — — — — —
19 1973 1499 99.9 — — — — — — +27 47.1% -0.47 1–0 — — +0.87 — — — — — — — — — — — — — — — —
20 1974 1528 106.8 — — — — — — +29 62.5% +0.38 1–1 2–1 (67%) — +0.76 1968 1498 97.2 — — — — — — — 50.0% -0.83 — — — +0.25
21 1975 1483 118.9 — — — — +5 +49 +85 32.0% -0.94 2–6 (25%) 1–5 (17%) 94.8 +0.75 1969 1483 95.1 — — — — — — — 0.0% -4.50 — — — +0.04
22 1976 1486 111.1 — — — — +2 +23 +41 39.3% -0.72 1–7 (13%) 5–2 (71%) 95.1 +2.37 — — — — — — — — — — — — — — — —
23 1977 1451 111.0 — — — — -11 +23 +79 34.0% -0.87 1–5 (17%) 0–3 (0%) 93.5 +1.75 1971 1535 104.7 — — — — +40 — +24 52.8% -0.42 1–2 (33%) 4–0 (100%) 102.6 +1.62
24 1978 1497 124.1 — — — — -42 -7 +79 36.8% -0.50 0–2 0–1 — +1.26 1972 1538 106.9 — — — — +68 +51 -34 47.8% -0.15 6–3 (67%) 1–2 (33%) 103.3 +3.47
25 1979 1574 129.7 — — — — -73 -90 +16 40.3% -0.81 2–6 (25%) 1–2 (33%) 97.1 +0.22 1973 1527 111.0 — — — — +83 -10 +16 39.7% -0.59 5–3 (63%) 5–6 (45%) 103.9 +1.56
26 1980 1696 132.3 — — — — -61 -210 -48 49.1% -0.26 6–8 (43%) 15–9 (63%) 103.5 -0.24 1974 1580 122.2 — — — — -11 +26 — 38.8% -0.85 5–6 (45%) 5–3 (63%) 102.2 +0.26
27 1981 1646 124.1 — — — — -59 — +26 45.3% -0.24 7–5 (58%) 9–8 (53%) 103.8 +0.98 1975 1570 124.1 — — — — -82 +30 -44 37.5% -0.76 2–5 (29%) 4–3 (57%) 97.0 -0.39
28 1982 1673 129.2 — — — — +4 -203 +17 46.6% -0.22 12–5 (71%) 5–7 (42%) 106.5 -0.07 1976 1515 119.6 — — — — — +32 — 14.8% -2.19 1–1 0–3 (0%) — -1.33
29 1983 1585 116.8 — — — — +105 — +12 41.8% -0.84 3–3 (50%) 3–3 (50%) 100.6 +0.79 1977 1523 106.2 — — — — — — — 42.9% -1.14 0–1 — — -0.19
30 1984 1546 123.8 — — — — +39 — +63 43.3% -0.37 3–8 (27%) 9–7 (56%) 97.8 -0.11 1978 1550 104.9 — — — — — +38 — 50.0% -0.40 1–1 1–1 — -0.01
31 1985 1602 120.0 — — — — +28 — +21 48.2% -0.02 5–4 (56%) 5–7 (42%) 101.8 +0.76 1979 1589 113.2 — — — — — +30 — 75.0% +1.75 — 0–1 — +0.47
32 1986 1537 106.4 — — — — +1 — +81 36.8% -0.79 2–4 (33%) 3–3 (50%) 98.1 +1.31 1980 1596 103.5 — — — — — +22 — 40.0% -0.20 2–0 1–1 — +0.26
33 1987 1547 103.3 — — — — -11 — — 41.7% -0.21 2–1 (67%) 2–4 (33%) 99.7 +0.44 — — — — — — — — — — — — — — — —
36 — — — — — — — — — — — — — — — — 1984 1581 98.5 — — — — — — — 0.0% -3.50 — — — +0.05
Career — 1767 127.3 — — — — -10 -43 +34 42.9% -0.47 48–66 (42%) 60–63 (49%) 98.5 +3.71 — 1624 119.2 — — — — -1 +28 -3 40.7% -0.68 23–22 (51%) 21–20 (51%) 104.4 +3.76

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.