Jun Kuki
all rivalries →| Opponent | W | L | M | Last Played | H2H |
|---|---|---|---|---|---|
| Ross Case | 0 | 5 | 5 | Oct 22, 1980 | H2H |
| Paolo Bertolucci | 0 | 4 | 4 | Apr 22, 1977 | H2H |
| Dick Crealy | 0 | 4 | 4 | Aug 11, 1976 | H2H |
| Balazs Taroczy | 1 | 2 | 3 | Oct 23, 1981 | H2H |
| Adriano Panatta | 0 | 3 | 3 | Oct 28, 1978 | H2H |
H2H data updated: 2026-08-31 00:00 UTC
Jun Kuki vs Willem Prinsloo H2H: 0-1
Willem Prinsloo holds a 1–0 lead over Jun Kuki in their ATP head-to-head. Across 1 main-draw meeting, Willem Prinsloo leads 1–0 on clay. Most recently, Willem Prinsloo won the 1977 Canadian Open round of 64 6-4 7-5.
Want to explore more matchups? Advanced rivalry search lets you browse current and historical rivalries, unbeaten records, or every matchup for a player.
H2H Match Log
| Player | Score | Player | Match Data | Date | Round | Tournament | Category | Surface |
|---|---|---|---|---|---|---|---|---|
| Willem Prinsloo | 6-4 7-5 | Jun Kuki | Match data | Aug 18, 1977* | R64 | Canadian Open | ATP 250 | Clay |
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 Kuki | #523 | #78 | 0 | 1,662 | 73 | 134 | 35.3% | 0 | 0 | 0 | 0 | 0 | 0 |
| Willem Prinsloo | #332 | #81 | 0 | 1,549 | 13 | 33 | 28.3% | 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 Kuki | Willem Prinsloo | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Yr | W-L | Win % | Rank | Elo | GS | Titles | Yr | W-L | Win % | Rank | Elo | GS | Titles | |
| 17 | — | — | — | — | — | — | — | 1971 | 1–1 | 50.0% | — | 1,516 | 0 | 0 |
| 18 | — | — | — | — | — | — | — | 1972 | 0–1 | 0.0% | — | 1,488 | 0 | 0 |
| 21 | — | — | — | — | — | — | — | 1975 | 1–1 | 50.0% | #282 | 1,491 | 0 | 0 |
| 22 | 1968 | 2–6 | 25.0% | — | 1,450 | 0 | 0 | 1976 | 3–1 | 75.0% | #154 | 1,547 | 0 | 0 |
| 23 | 1969 | 1–4 | 20.0% | — | 1,428 | 0 | 0 | 1977 | 4–15 | 21.1% | #97 | 1,502 | 0 | 0 |
| 24 | 1970 | 3–12 | 20.0% | — | 1,406 | 0 | 0 | 1978 | 3–5 | 37.5% | #122 | 1,501 | 0 | 0 |
| 25 | 1971 | 9–12 | 42.9% | — | 1,494 | 0 | 0 | 1979 | 1–9 | 10.0% | #265 | 1,428 | 0 | 0 |
| 26 | 1972 | 5–12 | 29.4% | — | 1,458 | 0 | 0 | — | — | — | — | — | — | — |
| 27 | 1973 | 3–8 | 27.3% | #217 | 1,457 | 0 | 0 | — | — | — | — | — | — | — |
| 28 | 1974 | 10–17 | 37.0% | #101 | 1,591 | 0 | 0 | — | — | — | — | — | — | — |
| 29 | 1975 | 11–28 | 28.2% | #161 | 1,455 | 0 | 0 | — | — | — | — | — | — | — |
| 30 | 1976 | 19–17 | 52.8% | #78 | 1,611 | 0 | 0 | — | — | — | — | — | — | — |
| 31 | 1977 | 3–11 | 21.4% | #171 | 1,548 | 0 | 0 | — | — | — | — | — | — | — |
| 32 | 1978 | 3–2 | 60.0% | #146 | 1,587 | 0 | 0 | — | — | — | — | — | — | — |
| 33 | 1979 | 1–2 | 33.3% | #389 | 1,578 | 0 | 0 | — | — | — | — | — | — | — |
| 34 | 1980 | 0–1 | 0.0% | #356 | 1,566 | 0 | 0 | — | — | — | — | — | — | — |
| 35 | 1981 | 2–1 | 66.7% | — | 1,598 | 0 | 0 | — | — | — | — | — | — | — |
| 36 | 1982 | 1–1 | 50.0% | — | 1,597 | 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 Kuki | Willem Prinsloo | ||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Yr | Hard | Clay | Grass | Carpet | Yr | Hard | Clay | Grass | Carpet | |||||||||||||||||||||||||
| 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 % | |||
| 17 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1971 | 1 | 1 | 2 | 50.0% | — | — | — | — | — | — | — | — | — | — | — | — |
| 18 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1972 | 0 | 1 | 1 | 0.0% | — | — | — | — | — | — | — | — | — | — | — | — |
| 21 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1975 | — | — | — | — | 1 | 1 | 2 | 50.0% | — | — | — | — | — | — | — | — |
| 22 | 1968 | 0 | 1 | 1 | 0.0% | 1 | 2 | 3 | 33.3% | 1 | 3 | 4 | 25.0% | — | — | — | — | 1976 | 3 | 1 | 4 | 75.0% | — | — | — | — | — | — | — | — | — | — | — | — |
| 23 | 1969 | — | — | — | — | 1 | 2 | 3 | 33.3% | 0 | 2 | 2 | 0.0% | — | — | — | — | 1977 | 1 | 1 | 2 | 50.0% | 3 | 12 | 15 | 20.0% | 0 | 2 | 2 | 0.0% | — | — | — | — |
| 24 | 1970 | 1 | 4 | 5 | 20.0% | 2 | 8 | 10 | 20.0% | — | — | — | — | — | — | — | — | 1978 | 2 | 3 | 5 | 40.0% | — | — | — | — | — | — | — | — | 1 | 2 | 3 | 33.3% |
| 25 | 1971 | 3 | 4 | 7 | 42.9% | 3 | 5 | 8 | 37.5% | 3 | 3 | 6 | 50.0% | — | — | — | — | 1979 | 1 | 5 | 6 | 16.7% | 0 | 3 | 3 | 0.0% | — | — | — | — | 0 | 1 | 1 | 0.0% |
| 26 | 1972 | 2 | 3 | 5 | 40.0% | 0 | 2 | 2 | 0.0% | 3 | 5 | 8 | 37.5% | 0 | 2 | 2 | 0.0% | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 27 | 1973 | 2 | 1 | 3 | 66.7% | 0 | 5 | 5 | 0.0% | 1 | 2 | 3 | 33.3% | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 28 | 1974 | 6 | 5 | 11 | 54.5% | 3 | 10 | 13 | 23.1% | 1 | 2 | 3 | 33.3% | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 29 | 1975 | 1 | 3 | 4 | 25.0% | 6 | 16 | 22 | 27.3% | 1 | 3 | 4 | 25.0% | 3 | 6 | 9 | 33.3% | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 30 | 1976 | 0 | 1 | 1 | 0.0% | 19 | 16 | 35 | 54.3% | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 31 | 1977 | 0 | 1 | 1 | 0.0% | 3 | 9 | 12 | 25.0% | — | — | — | — | 0 | 1 | 1 | 0.0% | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 32 | 1978 | — | — | — | — | 3 | 1 | 4 | 75.0% | — | — | — | — | 0 | 1 | 1 | 0.0% | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 33 | 1979 | — | — | — | — | 1 | 1 | 2 | 50.0% | — | — | — | — | 0 | 1 | 1 | 0.0% | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 34 | 1980 | — | — | — | — | 0 | 1 | 1 | 0.0% | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 35 | 1981 | — | — | — | — | 2 | 1 | 3 | 66.7% | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 36 | 1982 | — | — | — | — | 1 | 1 | 2 | 50.0% | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Career | — | 15 | 23 | 38 | 39.5% | 45 | 80 | 125 | 36.0% | 10 | 20 | 30 | 33.3% | 3 | 11 | 14 | 21.4% | — | 8 | 12 | 20 | 40.0% | 4 | 16 | 20 | 20.0% | 0 | 2 | 2 | 0.0% | 1 | 3 | 4 | 25.0% |
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 Kuki | Willem Prinsloo | ||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 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 | |
| 17 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1971 | 1517 | 101.3 | — | — | — | — | — | — | — | 42.9% | -0.71 | — | 0–1 | — | -0.26 |
| 18 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1972 | 1488 | 98.1 | — | — | — | — | — | — | — | 25.0% | -0.75 | — | — | — | +0.04 |
| 21 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1975 | 1491 | 103.1 | — | — | — | — | — | — | — | 60.0% | +0.60 | 0–1 | 1–0 | — | +0.33 |
| 22 | 1968 | 1450 | 95.3 | — | — | — | — | — | +51 | +26 | 28.6% | -1.24 | 1–1 | — | — | +0.12 | 1976 | 1547 | 115.5 | — | — | — | — | +58 | — | — | 66.7% | +1.00 | 1–0 | — | — | +0.34 |
| 23 | 1969 | 1429 | 100.1 | — | — | — | — | — | +67 | — | 27.3% | -1.36 | 0–1 | — | — | -0.21 | 1977 | 1503 | 110.5 | — | — | — | — | — | +2 | — | 23.3% | -2.23 | 1–2 (33%) | 2–1 (67%) | — | +0.24 |
| 24 | 1970 | 1406 | 102.7 | — | — | — | — | +97 | +39 | — | 20.6% | -1.82 | — | — | — | +0.02 | 1978 | 1501 | 102.5 | — | — | — | — | +87 | — | — | 36.8% | -1.26 | 2–1 (67%) | 2–0 | — | +1.33 |
| 25 | 1971 | 1494 | 105.6 | — | — | — | — | +1 | -24 | -8 | 44.6% | -0.34 | 1–1 | 0–1 | — | +1.29 | 1979 | 1428 | 101.7 | — | — | — | — | +79 | +29 | — | 26.9% | -1.69 | 0–5 (0%) | — | — | +0.82 |
| 26 | 1972 | 1459 | 107.2 | — | — | — | — | +12 | — | +4 | 31.6% | -1.13 | 1–3 (25%) | 0–1 | — | +0.50 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 27 | 1973 | 1458 | 113.8 | — | — | — | — | +78 | -34 | -13 | 38.7% | -0.39 | 1–3 (25%) | 1–1 | — | +0.44 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 28 | 1974 | 1592 | 122.3 | — | — | — | — | +41 | -171 | -166 | 38.5% | -0.88 | 5–5 (50%) | 6–5 (55%) | — | -0.22 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 29 | 1975 | 1456 | 114.7 | — | — | — | — | +107 | -47 | -22 | 36.2% | -0.93 | 4–11 (27%) | 3–1 (75%) | — | +3.22 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 30 | 1976 | 1612 | 137.0 | — | — | — | — | — | +8 | — | 51.2% | +0.07 | 2–4 (33%) | 2–4 (33%) | — | +1.67 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 31 | 1977 | 1548 | 117.9 | — | — | — | — | — | +32 | — | 28.1% | -1.66 | 0–3 (0%) | 1–1 | — | +0.17 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 32 | 1978 | 1587 | 113.7 | — | — | — | — | — | +35 | — | 54.5% | +0.64 | 1–0 | 0–1 | — | +0.21 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 33 | 1979 | 1579 | 107.2 | — | — | — | — | — | — | — | 42.9% | -0.14 | 0–1 | — | — | +0.13 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 34 | 1980 | 1566 | 100.7 | — | — | — | — | — | — | — | 0.0% | -3.00 | — | — | — | 0.00 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 35 | 1981 | 1598 | 110.7 | — | — | — | — | — | +26 | — | 66.7% | +0.17 | — | 1–0 | — | -0.14 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 36 | 1982 | 1597 | 106.2 | — | — | — | — | — | — | — | 60.0% | +1.40 | 0–1 | — | — | +0.16 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Career | — | 1663 | 121.6 | — | — | — | — | +58 | -17 | -19 | 38.6% | -0.73 | 16–34 (32%) | 14–15 (48%) | 94.6 | +3.59 | — | 1550 | 109.6 | — | — | — | — | +78 | +7 | — | 32.7% | -1.41 | 4–9 (31%) | 5–2 (71%) | 97.4 | +6.17 |
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.
Willem Prinsloo
all rivalries →| Opponent | W | L | M | Last Played | H2H |
|---|---|---|---|---|---|
| Bob Lutz | 0 | 2 | 2 | Aug 9, 1979 | H2H |
| Onny Parun | 1 | 1 | 2 | Sep 4, 1977 | H2H |
| Jeff Borowiak | 1 | 1 | 2 | Sep 2, 1977 | H2H |
| John Alexander | 0 | 2 | 2 | Aug 19, 1977 | H2H |
| Harold Solomon | 0 | 2 | 2 | Aug 2, 1977 | H2H |