H2H data updated: 2026-09-02 00:00 UTC

Thomaz Koch vs Jun Kuki H2H: 1-0

Thomaz Koch holds a 1–0 lead over Jun Kuki in their ATP head-to-head. Across 1 main-draw meeting, Thomaz Koch leads 1–0 on hard courts. Most recently, Thomaz Koch won the 1970 Caracas 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.

Thomaz Koch
BRA Age 81 Left-Handed
H2H
1 – 0
1 main draw meetings
Jun Kuki
JPN Age 80 Right-Handed

H2H Match Log

PlayerScorePlayerMatch DataDateRoundTournamentCategorySurface
Thomaz Koch 6-2 6-3 Jun Kuki Match data Mar 12, 1970* R32 Caracas 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
Thomaz Koch #857 #24 0 1,880 199 157 55.9% 0 0 0 0 6 6
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 Thomaz Koch Jun Kuki
YrW-LWin %RankEloGSTitles YrW-LWin %RankEloGSTitles
22 — — — — — — — 1968 2–6 25.0% — 1,450 0 0
23 1968 29–17 63.0% — 1,672 0 1 1969 1–4 20.0% — 1,428 0 0
24 1969 34–18 65.4% — 1,796 0 4 1970 3–12 20.0% — 1,406 0 0
25 1970 18–15 54.5% — 1,804 0 4 1971 9–12 42.9% — 1,494 0 0
26 1971 24–13 64.9% — 1,747 0 5 1972 5–12 29.4% — 1,458 0 0
27 1972 19–17 52.8% — 1,706 0 6 1973 3–8 27.3% #217 1,457 0 0
28 1973 5–6 45.5% #204 1,698 0 6 1974 10–17 37.0% #101 1,591 0 0
29 1974 22–12 64.7% #24 1,863 0 6 1975 11–28 28.2% #161 1,455 0 0
30 1975 19–21 47.5% #62 1,768 0 6 1976 19–17 52.8% #78 1,611 0 0
31 1976 15–8 65.2% #58 1,815 0 6 1977 3–11 21.4% #171 1,548 0 0
32 1977 1–6 14.3% #94 1,715 0 6 1978 3–2 60.0% #146 1,587 0 0
33 — — — — — — — 1979 1–2 33.3% #389 1,578 0 0
34 1979 4–7 36.4% #85 1,665 0 6 1980 0–1 0.0% #356 1,566 0 0
35 1980 7–9 43.8% #49 1,654 0 6 1981 2–1 66.7% — 1,598 0 0
36 1981 0–2 0.0% #90 1,630 0 6 1982 1–1 50.0% — 1,597 0 0
37 1982 1–5 16.7% — 1,594 0 6 — — — — — — —
38 1983 1–1 50.0% #185 1,585 0 6 — — — — — — —

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 Thomaz Koch Jun Kuki
Yr HardClayGrassCarpet Yr HardClayGrassCarpet
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 %
22 — — — — — — — — — — — — — — — — — 1968 0 1 1 0.0% 1 2 3 33.3% 1 3 4 25.0% — — — —
23 1968 9 5 14 64.3% 18 9 27 66.7% 1 2 3 33.3% 1 1 2 50.0% 1969 — — — — 1 2 3 33.3% 0 2 2 0.0% — — — —
24 1969 12 6 18 66.7% 12 3 15 80.0% 1 4 5 20.0% 9 5 14 64.3% 1970 1 4 5 20.0% 2 8 10 20.0% — — — — — — — —
25 1970 12 7 19 63.2% — — — — 1 2 3 33.3% 5 6 11 45.5% 1971 3 4 7 42.9% 3 5 8 37.5% 3 3 6 50.0% — — — —
26 1971 6 4 10 60.0% 6 3 9 66.7% 5 3 8 62.5% 7 3 10 70.0% 1972 2 3 5 40.0% 0 2 2 0.0% 3 5 8 37.5% 0 2 2 0.0%
27 1972 4 5 9 44.4% 2 4 6 33.3% 7 3 10 70.0% 6 5 11 54.5% 1973 2 1 3 66.7% 0 5 5 0.0% 1 2 3 33.3% — — — —
28 1973 4 4 8 50.0% 1 1 2 50.0% 0 1 1 0.0% — — — — 1974 6 5 11 54.5% 3 10 13 23.1% 1 2 3 33.3% — — — —
29 1974 4 2 6 66.7% 12 7 19 63.2% 3 2 5 60.0% 3 1 4 75.0% 1975 1 3 4 25.0% 6 16 22 27.3% 1 3 4 25.0% 3 6 9 33.3%
30 1975 1 4 5 20.0% 12 11 23 52.2% 0 2 2 0.0% 6 4 10 60.0% 1976 0 1 1 0.0% 19 16 35 54.3% — — — — — — — —
31 1976 3 1 4 75.0% 4 4 8 50.0% — — — — 8 3 11 72.7% 1977 0 1 1 0.0% 3 9 12 25.0% — — — — 0 1 1 0.0%
32 1977 0 2 2 0.0% 1 1 2 50.0% 0 1 1 0.0% 0 2 2 0.0% 1978 — — — — 3 1 4 75.0% — — — — 0 1 1 0.0%
33 — — — — — — — — — — — — — — — — — 1979 — — — — 1 1 2 50.0% — — — — 0 1 1 0.0%
34 1979 1 3 4 25.0% 3 4 7 42.9% — — — — — — — — 1980 — — — — 0 1 1 0.0% — — — — — — — —
35 1980 0 1 1 0.0% 3 4 7 42.9% 1 3 4 25.0% 3 1 4 75.0% 1981 — — — — 2 1 3 66.7% — — — — — — — —
36 1981 0 1 1 0.0% 0 1 1 0.0% — — — — — — — — 1982 — — — — 1 1 2 50.0% — — — — — — — —
37 1982 — — — — 1 3 4 25.0% — — — — 0 2 2 0.0% — — — — — — — — — — — — — — — — —
38 1983 1 1 2 50.0% — — — — — — — — — — — — — — — — — — — — — — — — — — — — —
Career — 57 46 103 55.3% 75 55 130 57.7% 19 23 42 45.2% 48 33 81 59.3% — 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 Thomaz Koch 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
22 — — — — — — — — — — — — — — — — 1968 1450 95.3 — — — — — +51 +26 28.6% -1.24 1–1 — — +0.12
23 1968 1672 129.3 — — — — -67 +38 -163 61.0% +1.12 5–9 (36%) — — +0.27 1969 1429 100.1 — — — — — +67 — 27.3% -1.36 0–1 — — -0.21
24 1969 1796 127.3 — — — — +69 +56 -315 60.8% +0.65 10–7 (59%) — — +3.64 1970 1406 102.7 — — — — +97 +39 — 20.6% -1.82 — — — +0.02
25 1970 1804 127.6 — — — — +60 — — 53.9% +0.49 9–1 (90%) 0–2 — +1.66 1971 1494 105.6 — — — — +1 -24 -8 44.6% -0.34 1–1 0–1 — +1.29
26 1971 1748 129.9 — — — — +105 +80 -167 65.2% +0.90 3–6 (33%) 7–0 (100%) — +4.08 1972 1459 107.2 — — — — +12 — +4 31.6% -1.13 1–3 (25%) 0–1 — +0.50
27 1972 1706 128.0 — — — — +63 +56 -87 50.6% +0.08 3–6 (33%) 5–6 (45%) — +1.16 1973 1458 113.8 — — — — +78 -34 -13 38.7% -0.39 1–3 (25%) 1–1 — +0.44
28 1973 1698 118.0 — — — — +46 — — 52.0% -0.12 1–2 (33%) 3–0 (100%) — -0.13 1974 1592 122.3 — — — — +41 -171 -166 38.5% -0.88 5–5 (50%) 6–5 (55%) — -0.22
29 1974 1863 142.6 — — — — -34 -6 -203 61.5% +0.43 5–5 (50%) 7–2 (78%) — -2.09 1975 1456 114.7 — — — — +107 -47 -22 36.2% -0.93 4–11 (27%) 3–1 (75%) — +3.22
30 1975 1769 140.3 — — — — +80 +16 — 49.5% +0.08 9–8 (53%) 4–5 (44%) — -1.45 1976 1612 137.0 — — — — — +8 — 51.2% +0.07 2–4 (33%) 2–4 (33%) — +1.67
31 1976 1816 127.2 — — — — +53 -51 — 60.7% +0.64 5–2 (71%) 3–3 (50%) — +3.43 1977 1548 117.9 — — — — — +32 — 28.1% -1.66 0–3 (0%) 1–1 — +0.17
32 1977 1715 108.6 — — — — +35 — — 31.8% -1.27 1–3 (25%) 1–1 — +0.02 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 1979 1665 115.2 — — — — +30 +52 — 42.3% -0.85 1–3 (25%) 1–0 — +0.07 1980 1566 100.7 — — — — — — — 0.0% -3.00 — — — 0.00
35 1980 1654 135.1 — — — — +61 +52 -47 46.3% -0.24 1–3 (25%) 3–2 (60%) — -0.22 1981 1598 110.7 — — — — — +26 — 66.7% +0.17 — 1–0 — -0.14
36 1981 1630 99.5 — — — — — — — 0.0% -2.75 — — — -0.20 1982 1597 106.2 — — — — — — — 60.0% +1.40 0–1 — — +0.16
37 1982 1595 108.2 — — — — — +58 — 21.4% -2.21 0–1 0–1 — -0.55 — — — — — — — — — — — — — — — —
38 1983 1586 102.5 — — — — — — — 50.0% +0.75 — — — +0.52 — — — — — — — — — — — — — — — —
Career — 1881 136.9 — — — — +50 +30 -156 55.5% +0.38 53–56 (49%) 34–22 (61%) 101.5 +2.93 — 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.