Jeff Borowiak
all rivalries →| Opponent | W | L | M | Last Played | H2H |
|---|---|---|---|---|---|
| Jimmy Connors | 3 | 8 | 11 | Sep 2, 1982 | H2H |
| Brian Gottfried | 6 | 4 | 10 | Jun 26, 1981 | H2H |
| Tom Okker | 4 | 6 | 10 | Aug 20, 1980 | H2H |
| Jaime Fillol | 4 | 6 | 10 | Apr 19, 1979 | H2H |
| Dick Stockton | 6 | 4 | 10 | Apr 21, 1978 | H2H |
H2H data updated: 2026-09-02 00:00 UTC
Jeff Borowiak vs Jun Kuki H2H: 1-1
Jeff Borowiak and Jun Kuki are tied 1–1 in their ATP head-to-head. Across 2 main-draw meetings, Jeff Borowiak leads 1–0 on grass, while Jun Kuki leads 1–0 on hard courts. Most recently, Jeff Borowiak won the 1975 Eastbourne Open round of 32 6-2 6-3.
Want to explore more matchups? Advanced rivalry search lets you browse current and historical rivalries, unbeaten records, or every matchup for a player.
H2H
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2 main draw meetings
H2H Match Log
| Player | Score | Player | Match Data | Date | Round | Tournament | Category | Surface |
|---|---|---|---|---|---|---|---|---|
| Jeff Borowiak | 6-2 6-3 | Jun Kuki | Match data | Jun 19, 1975* | R32 | Eastbourne Open | ATP 250 | Grass |
| Jun Kuki | 7-6 6-1 | Jeff Borowiak | Match data | Oct 10, 1973* | R32 | Osaka | ATP 250 | Hard |
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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Jeff Borowiak | #920 | #20 | 0 | 1,958 | 290 | 304 | 48.8% | 0 | 0 | 0 | 0 | 5 | 5 |
| Jun Kuki | #523 | #78 | 0 | 1,662 | 73 | 134 | 35.3% | 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 | Jeff Borowiak | Jun Kuki | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Yr | W-L | Win % | Rank | Elo | GS | Titles | Yr | W-L | Win % | Rank | Elo | GS | Titles | |
| 18 | 1968 | 6–10 | 37.5% | — | 1,470 | 0 | 0 | — | — | — | — | — | — | — |
| 19 | 1969 | 3–2 | 60.0% | — | 1,511 | 0 | 0 | — | — | — | — | — | — | — |
| 20 | 1970 | 6–7 | 46.2% | — | 1,564 | 0 | 0 | — | — | — | — | — | — | — |
| 21 | 1971 | 26–20 | 56.5% | — | 1,759 | 0 | 0 | — | — | — | — | — | — | — |
| 22 | 1972 | 20–28 | 41.7% | — | 1,825 | 0 | 0 | 1968 | 2–6 | 25.0% | — | 1,450 | 0 | 0 |
| 23 | 1973 | 21–33 | 38.9% | #82 | 1,732 | 0 | 0 | 1969 | 1–4 | 20.0% | — | 1,428 | 0 | 0 |
| 24 | 1974 | 34–26 | 56.7% | #40 | 1,858 | 0 | 2 | 1970 | 3–12 | 20.0% | — | 1,406 | 0 | 0 |
| 25 | 1975 | 31–26 | 54.4% | #48 | 1,807 | 0 | 2 | 1971 | 9–12 | 42.9% | — | 1,494 | 0 | 0 |
| 26 | 1976 | 18–23 | 43.9% | #60 | 1,724 | 0 | 2 | 1972 | 5–12 | 29.4% | — | 1,458 | 0 | 0 |
| 27 | 1977 | 47–24 | 66.2% | #25 | 1,825 | 0 | 5 | 1973 | 3–8 | 27.3% | #217 | 1,457 | 0 | 0 |
| 28 | 1978 | 16–25 | 39.0% | #98 | 1,671 | 0 | 5 | 1974 | 10–17 | 37.0% | #101 | 1,591 | 0 | 0 |
| 29 | 1979 | 5–13 | 27.8% | #125 | 1,617 | 0 | 5 | 1975 | 11–28 | 28.2% | #161 | 1,455 | 0 | 0 |
| 30 | 1980 | 5–5 | 50.0% | #189 | 1,670 | 0 | 5 | 1976 | 19–17 | 52.8% | #78 | 1,611 | 0 | 0 |
| 31 | 1981 | 18–19 | 48.6% | #52 | 1,763 | 0 | 5 | 1977 | 3–11 | 21.4% | #171 | 1,548 | 0 | 0 |
| 32 | 1982 | 21–20 | 51.2% | #94 | 1,742 | 0 | 5 | 1978 | 3–2 | 60.0% | #146 | 1,587 | 0 | 0 |
| 33 | 1983 | 13–19 | 40.6% | #98 | 1,652 | 0 | 5 | 1979 | 1–2 | 33.3% | #389 | 1,578 | 0 | 0 |
| 34 | 1984 | 0–4 | 0.0% | #520 | 1,599 | 0 | 5 | 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 | Jeff Borowiak | Jun Kuki | ||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 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 % | |||
| 18 | 1968 | 4 | 2 | 6 | 66.7% | 1 | 2 | 3 | 33.3% | 1 | 5 | 6 | 16.7% | 0 | 1 | 1 | 0.0% | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 19 | 1969 | 3 | 1 | 4 | 75.0% | 0 | 1 | 1 | 0.0% | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 20 | 1970 | 1 | 1 | 2 | 50.0% | 2 | 3 | 5 | 40.0% | 3 | 2 | 5 | 60.0% | 0 | 1 | 1 | 0.0% | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 21 | 1971 | 11 | 10 | 21 | 52.4% | 6 | 5 | 11 | 54.5% | 4 | 3 | 7 | 57.1% | 5 | 2 | 7 | 71.4% | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 22 | 1972 | 9 | 9 | 18 | 50.0% | 1 | 5 | 6 | 16.7% | 0 | 1 | 1 | 0.0% | 10 | 13 | 23 | 43.5% | 1968 | 0 | 1 | 1 | 0.0% | 1 | 2 | 3 | 33.3% | 1 | 3 | 4 | 25.0% | — | — | — | — |
| 23 | 1973 | 8 | 8 | 16 | 50.0% | 9 | 12 | 21 | 42.9% | 1 | 3 | 4 | 25.0% | 3 | 10 | 13 | 23.1% | 1969 | — | — | — | — | 1 | 2 | 3 | 33.3% | 0 | 2 | 2 | 0.0% | — | — | — | — |
| 24 | 1974 | 9 | 9 | 18 | 50.0% | 13 | 11 | 24 | 54.2% | 2 | 3 | 5 | 40.0% | 10 | 3 | 13 | 76.9% | 1970 | 1 | 4 | 5 | 20.0% | 2 | 8 | 10 | 20.0% | — | — | — | — | — | — | — | — |
| 25 | 1975 | 11 | 9 | 20 | 55.0% | 8 | 10 | 18 | 44.4% | 3 | 2 | 5 | 60.0% | 9 | 5 | 14 | 64.3% | 1971 | 3 | 4 | 7 | 42.9% | 3 | 5 | 8 | 37.5% | 3 | 3 | 6 | 50.0% | — | — | — | — |
| 26 | 1976 | 3 | 3 | 6 | 50.0% | 12 | 10 | 22 | 54.5% | 0 | 2 | 2 | 0.0% | 3 | 8 | 11 | 27.3% | 1972 | 2 | 3 | 5 | 40.0% | 0 | 2 | 2 | 0.0% | 3 | 5 | 8 | 37.5% | 0 | 2 | 2 | 0.0% |
| 27 | 1977 | 7 | 8 | 15 | 46.7% | 19 | 5 | 24 | 79.2% | 0 | 2 | 2 | 0.0% | 21 | 9 | 30 | 70.0% | 1973 | 2 | 1 | 3 | 66.7% | 0 | 5 | 5 | 0.0% | 1 | 2 | 3 | 33.3% | — | — | — | — |
| 28 | 1978 | 1 | 5 | 6 | 16.7% | 13 | 9 | 22 | 59.1% | 0 | 3 | 3 | 0.0% | 2 | 8 | 10 | 20.0% | 1974 | 6 | 5 | 11 | 54.5% | 3 | 10 | 13 | 23.1% | 1 | 2 | 3 | 33.3% | — | — | — | — |
| 29 | 1979 | 0 | 3 | 3 | 0.0% | 2 | 5 | 7 | 28.6% | 1 | 1 | 2 | 50.0% | 2 | 4 | 6 | 33.3% | 1975 | 1 | 3 | 4 | 25.0% | 6 | 16 | 22 | 27.3% | 1 | 3 | 4 | 25.0% | 3 | 6 | 9 | 33.3% |
| 30 | 1980 | 3 | 3 | 6 | 50.0% | — | — | — | — | — | — | — | — | 2 | 2 | 4 | 50.0% | 1976 | 0 | 1 | 1 | 0.0% | 19 | 16 | 35 | 54.3% | — | — | — | — | — | — | — | — |
| 31 | 1981 | 11 | 9 | 20 | 55.0% | 2 | 3 | 5 | 40.0% | 3 | 2 | 5 | 60.0% | 2 | 5 | 7 | 28.6% | 1977 | 0 | 1 | 1 | 0.0% | 3 | 9 | 12 | 25.0% | — | — | — | — | 0 | 1 | 1 | 0.0% |
| 32 | 1982 | 4 | 7 | 11 | 36.4% | 4 | 3 | 7 | 57.1% | 10 | 6 | 16 | 62.5% | 3 | 4 | 7 | 42.9% | 1978 | — | — | — | — | 3 | 1 | 4 | 75.0% | — | — | — | — | 0 | 1 | 1 | 0.0% |
| 33 | 1983 | 1 | 6 | 7 | 14.3% | 7 | 5 | 12 | 58.3% | 2 | 4 | 6 | 33.3% | 3 | 4 | 7 | 42.9% | 1979 | — | — | — | — | 1 | 1 | 2 | 50.0% | — | — | — | — | 0 | 1 | 1 | 0.0% |
| 34 | 1984 | 0 | 1 | 1 | 0.0% | 0 | 2 | 2 | 0.0% | 0 | 1 | 1 | 0.0% | — | — | — | — | 1980 | — | — | — | — | 0 | 1 | 1 | 0.0% | — | — | — | — | — | — | — | — |
| 35 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1981 | — | — | — | — | 2 | 1 | 3 | 66.7% | — | — | — | — | — | — | — | — |
| 36 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1982 | — | — | — | — | 1 | 1 | 2 | 50.0% | — | — | — | — | — | — | — | — |
| Career | — | 86 | 94 | 180 | 47.8% | 99 | 91 | 190 | 52.1% | 30 | 40 | 70 | 42.9% | 75 | 79 | 154 | 48.7% | — | 15 | 23 | 38 | 39.5% | 45 | 80 | 125 | 36.0% | 10 | 20 | 30 | 33.3% | 3 | 11 | 14 | 21.4% |
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 | Jeff Borowiak | Jun Kuki | ||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 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 | 1968 | 1471 | 97.5 | — | — | — | — | +106 | +20 | -42 | 37.8% | -0.84 | 0–2 | — | — | +0.39 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 19 | 1969 | 1512 | 107.1 | — | — | — | — | +167 | — | — | 50.0% | +0.43 | 3–1 (75%) | — | — | +0.31 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 20 | 1970 | 1565 | 109.0 | — | — | — | — | +89 | -54 | -66 | 46.7% | -0.47 | 1–0 | 0–2 | — | -0.25 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 21 | 1971 | 1759 | 131.8 | — | — | — | — | +6 | -154 | -148 | 53.0% | +0.15 | 10–5 (67%) | 9–6 (60%) | — | -1.12 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 22 | 1972 | 1826 | 149.5 | — | — | — | — | +40 | -240 | — | 43.2% | -0.46 | 10–10 (50%) | 9–10 (47%) | — | -7.30 | 1968 | 1450 | 95.3 | — | — | — | — | — | +51 | +26 | 28.6% | -1.24 | 1–1 | — | — | +0.12 |
| 23 | 1973 | 1733 | 135.6 | — | — | — | — | +29 | -103 | -173 | 43.0% | -0.37 | 9–15 (38%) | 7–10 (41%) | — | -4.54 | 1969 | 1429 | 100.1 | — | — | — | — | — | +67 | — | 27.3% | -1.36 | 0–1 | — | — | -0.21 |
| 24 | 1974 | 1859 | 146.3 | — | — | — | — | +25 | -114 | -273 | 56.0% | +0.23 | 8–10 (44%) | 12–6 (67%) | — | -4.92 | 1970 | 1406 | 102.7 | — | — | — | — | +97 | +39 | — | 20.6% | -1.82 | — | — | — | +0.02 |
| 25 | 1975 | 1808 | 148.3 | — | — | — | — | +64 | -110 | -178 | 53.6% | +0.42 | 11–12 (48%) | 5–9 (36%) | — | -5.88 | 1971 | 1494 | 105.6 | — | — | — | — | +1 | -24 | -8 | 44.6% | -0.34 | 1–1 | 0–1 | — | +1.29 |
| 26 | 1976 | 1725 | 143.4 | — | — | — | — | +66 | -6 | — | 47.9% | -0.08 | 9–9 (50%) | 6–8 (43%) | — | -2.54 | 1972 | 1459 | 107.2 | — | — | — | — | +12 | — | +4 | 31.6% | -1.13 | 1–3 (25%) | 0–1 | — | +0.50 |
| 27 | 1977 | 1825 | 151.8 | — | — | — | — | -12 | +75 | — | 61.0% | +0.81 | 14–7 (67%) | 9–9 (50%) | — | +0.48 | 1973 | 1458 | 113.8 | — | — | — | — | +78 | -34 | -13 | 38.7% | -0.39 | 1–3 (25%) | 1–1 | — | +0.44 |
| 28 | 1978 | 1672 | 145.7 | — | — | — | — | -11 | +208 | -147 | 43.0% | -0.37 | 3–6 (33%) | 4–4 (50%) | — | -3.12 | 1974 | 1592 | 122.3 | — | — | — | — | +41 | -171 | -166 | 38.5% | -0.88 | 5–5 (50%) | 6–5 (55%) | — | -0.22 |
| 29 | 1979 | 1618 | 131.4 | — | — | — | — | -19 | +166 | — | 38.3% | -0.58 | 2–5 (29%) | 3–6 (33%) | — | -1.00 | 1975 | 1456 | 114.7 | — | — | — | — | +107 | -47 | -22 | 36.2% | -0.93 | 4–11 (27%) | 3–1 (75%) | — | +3.22 |
| 30 | 1980 | 1671 | 131.2 | — | — | — | — | -19 | — | — | 59.1% | +0.91 | 1–3 (25%) | 1–1 | — | -0.33 | 1976 | 1612 | 137.0 | — | — | — | — | — | +8 | — | 51.2% | +0.07 | 2–4 (33%) | 2–4 (33%) | — | +1.67 |
| 31 | 1981 | 1764 | 143.3 | — | — | — | — | -10 | -18 | -91 | 48.9% | -0.23 | 4–5 (44%) | 10–10 (50%) | — | -1.40 | 1977 | 1548 | 117.9 | — | — | — | — | — | +32 | — | 28.1% | -1.66 | 0–3 (0%) | 1–1 | — | +0.17 |
| 32 | 1982 | 1742 | 140.8 | — | — | — | — | -6 | -6 | -10 | 53.5% | +0.11 | 4–8 (33%) | 9–8 (53%) | — | -2.10 | 1978 | 1587 | 113.7 | — | — | — | — | — | +35 | — | 54.5% | +0.64 | 1–0 | 0–1 | — | +0.21 |
| 33 | 1983 | 1652 | 129.5 | — | — | — | — | -39 | +97 | +56 | 43.8% | -0.57 | 5–5 (50%) | 9–4 (69%) | — | -1.80 | 1979 | 1579 | 107.2 | — | — | — | — | — | — | — | 42.9% | -0.14 | 0–1 | — | — | +0.13 |
| 34 | 1984 | 1599 | 108.8 | — | — | — | — | — | — | — | 20.0% | -1.60 | 0–2 | 0–1 | — | -0.33 | 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 | — | 1959 | 147.5 | — | — | — | — | +19 | -10 | -85 | 49.6% | -0.02 | 94–105 (47%) | 93–94 (50%) | 100.6 | -6.02 | — | 1663 | 121.6 | — | — | — | — | +58 | -17 | -19 | 38.6% | -0.73 | 16–34 (32%) | 14–15 (48%) | 94.6 | +3.59 |
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.
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 |