H2H data updated: 2026-09-06 00:00 UTC

Colin Dowdeswell vs Thomaz Koch H2H: 0-1

Thomaz Koch holds a 1–0 lead over Colin Dowdeswell in their ATP head-to-head. Across 1 main-draw meeting, Thomaz Koch leads 1–0 on clay. Most recently, Thomaz Koch won the 1976 Indianapolis round of 64 6-3 7-5.

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Colin Dowdeswell
GBR Age 71 Right-Handed 185 cm / 6'1"
H2H
0 – 1
1 main-draw meetings
Thomaz Koch
BRA Age 81 Left-Handed

H2H Match Log

PlayerScorePlayerMatch DataDateRoundTournamentCategorySurface
Thomaz Koch 6-3 7-5 Colin Dowdeswell Match data Aug 11, 1976* R64 Indianapolis 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
Colin Dowdeswell #901 #31 0 1,730 119 174 40.6% 0 0 0 0 1 1
Thomaz Koch #857 #24 0 1,880 199 157 55.9% 0 0 0 0 6 6

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 Colin Dowdeswell Thomaz Koch
YrW-LWin %RankEloGSTitles YrW-LWin %RankEloGSTitles
17 1972 1–1 50.0% — 1,504 0 0 — — — — — — —
18 1973 4–5 44.4% #148 1,522 0 0 — — — — — — —
19 1974 4–4 50.0% #138 1,537 0 0 — — — — — — —
20 1975 22–24 47.8% #85 1,611 0 1 — — — — — — —
21 1976 14–26 35.0% #122 1,626 0 1 — — — — — — —
22 1977 9–13 40.9% #94 1,576 0 1 — — — — — — —
23 1978 20–22 47.6% #75 1,652 0 1 1968 29–17 63.0% — 1,672 0 1
24 1979 12–16 42.9% #104 1,616 0 1 1969 34–18 65.4% — 1,796 0 4
25 1980 1–13 7.1% #269 1,492 0 1 1970 18–15 54.5% — 1,804 0 4
26 — — — — — — — 1971 24–13 64.9% — 1,747 0 5
27 1982 2–4 33.3% — 1,520 0 1 1972 19–17 52.8% — 1,706 0 6
28 1983 17–10 63.0% #33 1,717 0 1 1973 5–6 45.5% #204 1,698 0 6
29 1984 10–24 29.4% #179 1,608 0 1 1974 22–12 64.7% #24 1,863 0 6
30 1985 2–11 15.4% #258 1,477 0 1 1975 19–21 47.5% #62 1,768 0 6
31 1986 1–1 50.0% #414 1,511 0 1 1976 15–8 65.2% #58 1,815 0 6
32 — — — — — — — 1977 1–6 14.3% #94 1,715 0 6
34 — — — — — — — 1979 4–7 36.4% #85 1,665 0 6
35 — — — — — — — 1980 7–9 43.8% #49 1,654 0 6
36 — — — — — — — 1981 0–2 0.0% #90 1,630 0 6
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 Colin Dowdeswell Thomaz Koch
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 %
17 1972 1 1 2 50.0% — — — — — — — — — — — — — — — — — — — — — — — — — — — — —
18 1973 2 1 3 66.7% 2 2 4 50.0% 0 2 2 0.0% — — — — — — — — — — — — — — — — — — — — —
19 1974 1 1 2 50.0% 0 1 1 0.0% 0 1 1 0.0% 3 1 4 75.0% — — — — — — — — — — — — — — — — —
20 1975 2 2 4 50.0% 20 19 39 51.3% 0 1 1 0.0% 0 2 2 0.0% — — — — — — — — — — — — — — — — —
21 1976 2 4 6 33.3% 10 16 26 38.5% 1 2 3 33.3% 1 4 5 20.0% — — — — — — — — — — — — — — — — —
22 1977 1 2 3 33.3% 7 10 17 41.2% 1 1 2 50.0% — — — — — — — — — — — — — — — — — — — — —
23 1978 10 6 16 62.5% 9 14 23 39.1% 1 1 2 50.0% 0 1 1 0.0% 1968 9 5 14 64.3% 18 9 27 66.7% 1 2 3 33.3% 1 1 2 50.0%
24 1979 5 9 14 35.7% 6 5 11 54.5% 1 1 2 50.0% 0 1 1 0.0% 1969 12 6 18 66.7% 12 3 15 80.0% 1 4 5 20.0% 9 5 14 64.3%
25 1980 1 2 3 33.3% 0 10 10 0.0% 0 1 1 0.0% — — — — 1970 12 7 19 63.2% — — — — 1 2 3 33.3% 5 6 11 45.5%
26 — — — — — — — — — — — — — — — — — 1971 6 4 10 60.0% 6 3 9 66.7% 5 3 8 62.5% 7 3 10 70.0%
27 1982 — — — — 0 2 2 0.0% 1 1 2 50.0% 1 1 2 50.0% 1972 4 5 9 44.4% 2 4 6 33.3% 7 3 10 70.0% 6 5 11 54.5%
28 1983 8 3 11 72.7% 9 5 14 64.3% — — — — 0 2 2 0.0% 1973 4 4 8 50.0% 1 1 2 50.0% 0 1 1 0.0% — — — —
29 1984 4 5 9 44.4% 2 9 11 18.2% 4 5 9 44.4% 0 5 5 0.0% 1974 4 2 6 66.7% 12 7 19 63.2% 3 2 5 60.0% 3 1 4 75.0%
30 1985 2 5 7 28.6% 0 1 1 0.0% 0 5 5 0.0% — — — — 1975 1 4 5 20.0% 12 11 23 52.2% 0 2 2 0.0% 6 4 10 60.0%
31 1986 — — — — — — — — 1 1 2 50.0% — — — — 1976 3 1 4 75.0% 4 4 8 50.0% — — — — 8 3 11 72.7%
32 — — — — — — — — — — — — — — — — — 1977 0 2 2 0.0% 1 1 2 50.0% 0 1 1 0.0% 0 2 2 0.0%
34 — — — — — — — — — — — — — — — — — 1979 1 3 4 25.0% 3 4 7 42.9% — — — — — — — —
35 — — — — — — — — — — — — — — — — — 1980 0 1 1 0.0% 3 4 7 42.9% 1 3 4 25.0% 3 1 4 75.0%
36 — — — — — — — — — — — — — — — — — 1981 0 1 1 0.0% 0 1 1 0.0% — — — — — — — —
37 — — — — — — — — — — — — — — — — — 1982 — — — — 1 3 4 25.0% — — — — 0 2 2 0.0%
38 — — — — — — — — — — — — — — — — — 1983 1 1 2 50.0% — — — — — — — — — — — —
Career — 39 41 80 48.8% 65 94 159 40.9% 10 22 32 31.2% 5 17 22 22.7% — 57 46 103 55.3% 75 55 130 57.7% 19 23 42 45.2% 48 33 81 59.3%

Advanced Statistics Comparison by Age

Seasons are aligned by the age each player spent most of that calendar year. Metrics use eligible main-draw results; point statistics use matches with detailed data. 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 Colin Dowdeswell Thomaz Koch
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 1972 1505 99.4 — — — — — — — 57.1% -0.57 — 3–0 (100%) — +0.01 — — — — — — — — — — — — — — — —
18 1973 1522 117.3 — — — — +87 +60 — 47.6% -0.19 0–1 — — +0.51 — — — — — — — — — — — — — — — —
19 1974 1538 103.5 — — — — +109 — — 50.0% -0.39 1–1 1–1 — +1.37 — — — — — — — — — — — — — — — —
20 1975 1612 121.7 — — — — -27 +57 — 45.4% -0.20 4–8 (33%) 5–2 (71%) 98.8 +4.07 — — — — — — — — — — — — — — — —
21 1976 1627 127.0 — — — — -79 +48 -171 39.4% -0.75 5–9 (36%) 7–4 (64%) 99.4 +0.35 — — — — — — — — — — — — — — — —
22 1977 1577 118.3 — — — — -40 +40 — 43.9% -0.53 4–4 (50%) 3–4 (43%) 100.3 +1.17 — — — — — — — — — — — — — — — —
23 1978 1652 125.6 — — — — +16 -49 — 43.1% -0.41 13–5 (72%) 4–10 (29%) 108.9 +1.98 1968 1672 129.3 — — — — -67 +38 -163 61.0% +1.12 5–9 (36%) — — +0.27
24 1979 1617 120.0 — — — — -46 +21 — 43.1% -0.64 5–5 (50%) 7–5 (58%) 101.9 -0.02 1969 1796 127.3 — — — — +69 +56 -315 60.8% +0.65 10–7 (59%) — — +3.64
25 1980 1493 109.7 — — — — +86 +4 — 17.6% -2.09 0–4 (0%) 1–1 — -0.29 1970 1804 127.6 — — — — +60 — — 53.9% +0.49 9–1 (90%) 0–2 — +1.66
26 — — — — — — — — — — — — — — — — 1971 1748 129.9 — — — — +105 +80 -167 65.2% +0.90 3–6 (33%) 7–0 (100%) 100.9 +4.08
27 1982 1521 119.2 — — — — — — — 31.3% -0.94 1–0 1–2 (33%) — -0.28 1972 1706 128.0 — — — — +63 +56 -87 50.6% +0.08 3–6 (33%) 5–6 (45%) 94.9 +1.16
28 1983 1718 139.0 — — — — -9 -106 — 59.1% +0.92 6–4 (60%) 4–3 (57%) 104.5 +1.78 1973 1698 118.0 — — — — +46 — — 52.0% -0.12 1–2 (33%) 3–0 (100%) — -0.13
29 1984 1609 124.9 — — — — +55 -52 -92 31.7% -1.22 4–4 (50%) 2–2 (50%) 100.4 -0.62 1974 1863 142.6 — — — — -34 -6 -203 61.5% +0.43 5–5 (50%) 7–2 (78%) 104.7 -2.09
30 1985 1477 105.6 — — — — +122 — -48 26.7% -1.57 0–3 (0%) 1–3 (25%) 94.6 +0.51 1975 1769 140.3 — — — — +80 +16 — 49.5% +0.08 9–8 (53%) 4–5 (44%) 98.9 -1.45
31 1986 1511 104.0 — — — — — — — 42.9% -0.71 — — — -0.18 1976 1816 127.2 — — — — +53 -51 — 60.7% +0.64 5–2 (71%) 3–3 (50%) 102.5 +3.43
32 — — — — — — — — — — — — — — — — 1977 1715 108.6 — — — — +35 — — 31.8% -1.27 1–3 (25%) 1–1 — +0.02
34 — — — — — — — — — — — — — — — — 1979 1665 115.2 — — — — +30 +52 — 42.3% -0.85 1–3 (25%) 1–0 — +0.07
35 — — — — — — — — — — — — — — — — 1980 1654 135.1 — — — — +61 +52 -47 46.3% -0.24 1–3 (25%) 3–2 (60%) 98.7 -0.22
36 — — — — — — — — — — — — — — — — 1981 1630 99.5 — — — — — — — 0.0% -2.75 — — — -0.20
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 — 1730 128.5 — — — — +11 +10 -93 41.4% -0.57 43–48 (47%) 39–37 (51%) 103.8 +3.56 — 1881 136.9 — — — — +50 +30 -156 55.5% +0.38 53–56 (49%) 34–22 (61%) 101.5 +2.93

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.