H2H data updated: 2026-07-19 08:25 UTC
Jun Kuki vs Byron Bertram H2H: 0-1
Byron Bertram holds a 1–0 lead over Jun Kuki in their ATP head-to-head. Across 1 main-draw meeting, Byron Bertram leads 1–0 on clay. Most recently, Byron Bertram won the 1970 Kitzbuehel third round 8-6 8-6.
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JPN
Age 80
Right-Handed
H2H
0
–
1
1 main draw meetings
RSA
Age 73
Right-Handed
H2H Match Log
| Date | Tournament | Category | Round | Surface | Winner | Score | Loser | Match |
|---|---|---|---|---|---|---|---|---|
| Aug 12, 1970* | Kitzbuehel | ATP 250 | R32 | Clay | Byron Bertram | 8-6 8-6 | Jun Kuki | 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 Kuki | #523 | #74 | 0 | 1,662 | 73 | 134 | 35.3% | 0 | 0 | 0 | 0 | 0 | 0 |
| Byron Bertram | #150 | #51 | 0 | 1,810 | 113 | 138 | 45.0% | 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 Kuki | Byron Bertram | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Yr | W-L | Win % | Rank | Elo | GS | Titles | Yr | W-L | Win % | Rank | Elo | GS | Titles | |
| 16 | — | — | — | — | — | — | — | 1969 | 0–3 | 0.0% | — | 1,466 | 0 | 0 |
| 17 | — | — | — | — | — | — | — | 1970 | 11–11 | 50.0% | — | 1,540 | 0 | 0 |
| 18 | — | — | — | — | — | — | — | 1971 | 9–13 | 40.9% | — | 1,542 | 0 | 0 |
| 19 | — | — | — | — | — | — | — | 1972 | 2–2 | 50.0% | — | 1,532 | 0 | 0 |
| 20 | — | — | — | — | — | — | — | 1973 | 11–10 | 52.4% | #152 | 1,609 | 0 | 0 |
| 21 | — | — | — | — | — | — | — | 1974 | 15–13 | 53.6% | #156 | 1,649 | 0 | 0 |
| 22 | 1968 | 2–6 | 25.0% | — | 1,450 | 0 | 0 | 1975 | 5–8 | 38.5% | #120 | 1,650 | 0 | 0 |
| 23 | 1969 | 1–4 | 20.0% | — | 1,429 | 0 | 0 | 1976 | 21–23 | 47.7% | #57 | 1,728 | 0 | 0 |
| 24 | 1970 | 3–12 | 20.0% | — | 1,406 | 0 | 0 | 1977 | 21–27 | 43.8% | #84 | 1,741 | 0 | 0 |
| 25 | 1971 | 9–12 | 42.9% | — | 1,492 | 0 | 0 | 1978 | 10–11 | 47.6% | #92 | 1,664 | 0 | 0 |
| 26 | 1972 | 5–12 | 29.4% | — | 1,464 | 0 | 0 | 1979 | 1–2 | 33.3% | #219 | 1,646 | 0 | 0 |
| 27 | 1973 | 3–8 | 27.3% | #217 | 1,461 | 0 | 0 | 1980 | 7–15 | 31.8% | #150 | 1,567 | 0 | 0 |
| 28 | 1974 | 10–17 | 37.0% | #101 | 1,594 | 0 | 0 | — | — | — | — | — | — | — |
| 29 | 1975 | 11–28 | 28.2% | #161 | 1,455 | 0 | 0 | — | — | — | — | — | — | — |
| 30 | 1976 | 19–17 | 52.8% | #78 | 1,610 | 0 | 0 | — | — | — | — | — | — | — |
| 31 | 1977 | 3–11 | 21.4% | #201 | 1,547 | 0 | 0 | — | — | — | — | — | — | — |
| 32 | 1978 | 3–2 | 60.0% | #146 | 1,586 | 0 | 0 | — | — | — | — | — | — | — |
| 33 | 1979 | 1–2 | 33.3% | #389 | 1,577 | 0 | 0 | — | — | — | — | — | — | — |
| 34 | 1980 | 0–1 | 0.0% | #356 | 1,564 | 0 | 0 | — | — | — | — | — | — | — |
| 35 | 1981 | 2–1 | 66.7% | #356 | 1,597 | 0 | 0 | — | — | — | — | — | — | — |
| 36 | 1982 | 1–1 | 50.0% | — | 1,596 | 0 | 0 | — | — | — | — | — | — | — |