H2H data updated: 2026-07-18 17:48 UTC
Jun Kamiwazumi vs Geoff Masters H2H: 1-1
Jun Kamiwazumi and Geoff Masters are tied 1–1 in their ATP head-to-head. Across 2 main-draw meetings, Jun Kamiwazumi leads 1–0 on grass, while Geoff Masters leads 1–0 on hard courts. Most recently, Geoff Masters won the 1974 Tuscon second round 1-6 6-4 6-1.
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JPN
Age 78
Right-Handed
H2H
1
–
1
2 main draw meetings
AUS
Age 75
Right-Handed
H2H Match Log
| Date | Tournament | Category | Round | Surface | Winner | Score | Loser | Match |
|---|---|---|---|---|---|---|---|---|
| Apr 1, 1974* | Tuscon | ATP 250 | R64 | Hard | Geoff Masters | 1-6 6-4 6-1 | Jun Kamiwazumi | Match data |
| Jan 11, 1973* | Auckland | ATP 250 | R32 | Grass | Jun Kamiwazumi | 7-6 6-3 3-6 4-6 6-3 | Geoff Masters | 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 |
| Geoff Masters | #826 | #41 | 0 | 1,881 | 238 | 255 | 48.3% | 0 | 0 | 0 | 0 | 2 | 2 |
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 | Geoff Masters | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Yr | W-L | Win % | Rank | Elo | GS | Titles | Yr | W-L | Win % | Rank | Elo | GS | Titles | |
| 17 | — | — | — | — | — | — | — | 1968 | 2–2 | 50.0% | — | 1,510 | 0 | 0 |
| 18 | — | — | — | — | — | — | — | 1969 | 7–6 | 53.8% | — | 1,547 | 0 | 0 |
| 19 | — | — | — | — | — | — | — | 1970 | 10–7 | 58.8% | — | 1,581 | 0 | 0 |
| 20 | 1968 | 1–1 | 50.0% | — | 1,498 | 0 | 0 | 1971 | 19–22 | 46.3% | — | 1,571 | 0 | 0 |
| 21 | 1969 | 0–1 | 0.0% | — | 1,482 | 0 | 0 | 1972 | 18–18 | 50.0% | — | 1,669 | 0 | 0 |
| 22 | — | — | — | — | — | — | — | 1973 | 28–23 | 54.9% | #52 | 1,754 | 0 | 0 |
| 23 | 1971 | 6–5 | 54.5% | — | 1,533 | 0 | 0 | 1974 | 24–22 | 52.2% | #53 | 1,767 | 0 | 1 |
| 24 | 1972 | 13–13 | 50.0% | — | 1,538 | 0 | 0 | 1975 | 27–25 | 51.9% | #44 | 1,804 | 0 | 1 |
| 25 | 1973 | 10–16 | 38.5% | #94 | 1,523 | 0 | 0 | 1976 | 27–31 | 46.6% | #53 | 1,780 | 0 | 2 |
| 26 | 1974 | 14–23 | 37.8% | #100 | 1,592 | 0 | 0 | 1977 | 22–27 | 44.9% | #78 | 1,660 | 0 | 2 |
| 27 | 1975 | 11–23 | 32.4% | #127 | 1,574 | 0 | 0 | 1978 | 20–20 | 50.0% | #59 | 1,699 | 0 | 2 |
| 28 | 1976 | 1–10 | 9.1% | #206 | 1,517 | 0 | 0 | 1979 | 21–23 | 47.7% | #62 | 1,723 | 0 | 2 |
| 29 | 1977 | 1–2 | 33.3% | #305 | 1,524 | 0 | 0 | 1980 | 13–28 | 31.7% | #166 | 1,516 | 0 | 2 |
| 30 | 1978 | 2–2 | 50.0% | #284 | 1,551 | 0 | 0 | 1981 | 0–1 | 0.0% | #166 | 1,499 | 0 | 2 |
| 31 | 1979 | 3–1 | 75.0% | #257 | 1,591 | 0 | 0 | — | — | — | — | — | — | — |
| 32 | 1980 | 2–2 | 50.0% | #269 | 1,597 | 0 | 0 | — | — | — | — | — | — | — |
| 36 | 1984 | 0–1 | 0.0% | #745 | 1,582 | 0 | 0 | — | — | — | — | — | — | — |