H2H data updated: 2026-07-18 14:16 UTC
Jun Kamiwazumi vs Jeff Simpson H2H: 1-0
Jun Kamiwazumi holds a 1–0 lead over Jeff Simpson in their ATP head-to-head. Across 1 main-draw meeting, Jun Kamiwazumi leads 1–0 on hard courts. Most recently, Jun Kamiwazumi won the 1974 Tokyo second round 6-2 6-2.
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JPN
Age 78
Right-Handed
H2H
1
–
0
1 main draw meetings
NZL
Age 75
Right-Handed
H2H Match Log
| Date | Tournament | Category | Round | Surface | Winner | Score | Loser | Match |
|---|---|---|---|---|---|---|---|---|
| Oct 15, 1974* | Tokyo | ATP 250 | R64 | Hard | Jun Kamiwazumi | 6-2 6-2 | Jeff Simpson | Match data |
* Estimated match date where the exact historical date is unavailable.
Career Comparison
| Player | Current | Peak | Pts | Elo | W | L | Win % | GS | 1000 | Finals | 500 | 250 | Titles |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Jun Kamiwazumi | #808 | #78 | 0 | 1,628 | 64 | 100 | 39.0% | 0 | 0 | 0 | 0 | 0 | 0 |
| Jeff Simpson | #735 | #66 | 0 | 1,598 | 47 | 94 | 33.3% | 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 | Jun Kamiwazumi | Jeff Simpson | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Yr | W-L | Win % | Rank | Elo | GS | Titles | Yr | W-L | Win % | Rank | Elo | GS | Titles | |
| 17 | — | — | — | — | — | — | — | 1968 | 0–1 | 0.0% | — | 1,474 | 0 | 0 |
| 18 | — | — | — | — | — | — | — | 1969 | 0–3 | 0.0% | — | 1,421 | 0 | 0 |
| 19 | — | — | — | — | — | — | — | 1970 | 1–1 | 50.0% | — | 1,441 | 0 | 0 |
| 20 | 1968 | 1–1 | 50.0% | — | 1,498 | 0 | 0 | 1971 | 0–4 | 0.0% | — | 1,392 | 0 | 0 |
| 21 | 1969 | 0–1 | 0.0% | — | 1,482 | 0 | 0 | 1972 | 8–16 | 33.3% | — | 1,446 | 0 | 0 |
| 22 | — | — | — | — | — | — | — | 1973 | 18–21 | 46.2% | #92 | 1,566 | 0 | 0 |
| 23 | 1971 | 6–5 | 54.5% | — | 1,533 | 0 | 0 | 1974 | 12–30 | 28.6% | #132 | 1,472 | 0 | 0 |
| 24 | 1972 | 13–13 | 50.0% | — | 1,538 | 0 | 0 | 1975 | 3–2 | 60.0% | #193 | 1,552 | 0 | 0 |
| 25 | 1973 | 10–16 | 38.5% | #94 | 1,523 | 0 | 0 | 1976 | 1–2 | 33.3% | — | 1,539 | 0 | 0 |
| 26 | 1974 | 14–23 | 37.8% | #100 | 1,592 | 0 | 0 | — | — | — | — | — | — | — |
| 27 | 1975 | 11–23 | 32.4% | #127 | 1,574 | 0 | 0 | — | — | — | — | — | — | — |
| 28 | 1976 | 1–10 | 9.1% | #206 | 1,517 | 0 | 0 | — | — | — | — | — | — | — |
| 29 | 1977 | 1–2 | 33.3% | #305 | 1,524 | 0 | 0 | 1980 | 0–1 | 0.0% | #365 | 1,522 | 0 | 0 |
| 30 | 1978 | 2–2 | 50.0% | #284 | 1,551 | 0 | 0 | 1981 | 1–2 | 33.3% | #365 | 1,524 | 0 | 0 |
| 31 | 1979 | 3–1 | 75.0% | #257 | 1,591 | 0 | 0 | 1982 | 1–8 | 11.1% | #96 | 1,449 | 0 | 0 |
| 32 | 1980 | 2–2 | 50.0% | #269 | 1,597 | 0 | 0 | 1983 | 2–3 | 40.0% | #167 | 1,449 | 0 | 0 |
| 36 | 1984 | 0–1 | 0.0% | #745 | 1,582 | 0 | 0 | — | — | — | — | — | — | — |