H2H data updated: 2026-09-07 00:00 UTC

Leif Shiras vs Colin Dowdeswell H2H: 1-0

Leif Shiras holds a 1–0 lead over Colin Dowdeswell in their ATP head-to-head. Across 1 main-draw meeting, Leif Shiras leads 1–0 on grass. Most recently, Leif Shiras won the 1985 Sydney International round of 64 6-1 6-2.

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Leif Shiras
USA Age 67 Right-Handed 183 cm / 6'0"
H2H
1 – 0
1 main-draw meetings
Colin Dowdeswell
GBR Age 71 Right-Handed 185 cm / 6'1"

H2H Match Log

PlayerScorePlayerMatch DataDateRoundTournamentCategorySurface
Leif Shiras #120 6-1 6-2 Colin Dowdeswell #223 Match data Dec 11, 1985* R64 Sydney International ATP 250 Grass

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
Leif Shiras #1,118 #31 291 1,687 71 102 41.0% 0 0 0 0 0 0
Colin Dowdeswell #901 #31 0 1,730 119 174 40.6% 0 0 0 0 1 1

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 Leif Shiras Colin Dowdeswell
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 1980 0–2 0.0% #482 1,475 0 0 1975 22–24 47.8% #85 1,611 0 1
21 — — — — — — — 1976 14–26 35.0% #122 1,626 0 1
22 1982 0–1 0.0% — 1,454 0 0 1977 9–13 40.9% #94 1,576 0 1
23 1983 2–2 50.0% #408 1,485 0 0 1978 20–22 47.6% #75 1,652 0 1
24 1984 15–16 48.4% #61 1,555 0 0 1979 12–16 42.9% #104 1,616 0 1
25 1985 17–19 47.2% #123 1,646 0 0 1980 1–13 7.1% #269 1,492 0 1
26 1986 2–5 28.6% #176 1,591 0 0 — — — — — — —
27 1987 4–11 26.7% #157 1,524 0 0 1982 2–4 33.3% — 1,520 0 1
28 1988 9–12 42.9% #110 1,586 0 0 1983 17–10 63.0% #33 1,717 0 1
29 1989 14–16 46.7% #85 1,637 0 0 1984 10–24 29.4% #179 1,608 0 1
30 1990 8–18 30.8% #181 1,553 0 0 1985 2–11 15.4% #258 1,477 0 1
31 — — — — — — — 1986 1–1 50.0% #414 1,511 0 1

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 Leif Shiras Colin Dowdeswell
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 1980 0 1 1 0.0% 0 1 1 0.0% — — — — — — — — 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 1982 0 1 1 0.0% — — — — — — — — — — — — 1977 1 2 3 33.3% 7 10 17 41.2% 1 1 2 50.0% — — — —
23 1983 — — — — — — — — 2 2 4 50.0% — — — — 1978 10 6 16 62.5% 9 14 23 39.1% 1 1 2 50.0% 0 1 1 0.0%
24 1984 3 7 10 30.0% 1 1 2 50.0% 11 6 17 64.7% 0 2 2 0.0% 1979 5 9 14 35.7% 6 5 11 54.5% 1 1 2 50.0% 0 1 1 0.0%
25 1985 3 5 8 37.5% — — — — 8 8 16 50.0% 6 6 12 50.0% 1980 1 2 3 33.3% 0 10 10 0.0% 0 1 1 0.0% — — — —
26 1986 0 2 2 0.0% — — — — 0 1 1 0.0% 2 2 4 50.0% — — — — — — — — — — — — — — — — —
27 1987 0 3 3 0.0% 1 4 5 20.0% 2 3 5 40.0% 1 1 2 50.0% 1982 — — — — 0 2 2 0.0% 1 1 2 50.0% 1 1 2 50.0%
28 1988 5 8 13 38.5% — — — — 0 2 2 0.0% 4 2 6 66.7% 1983 8 3 11 72.7% 9 5 14 64.3% — — — — 0 2 2 0.0%
29 1989 7 10 17 41.2% — — — — 3 2 5 60.0% 4 4 8 50.0% 1984 4 5 9 44.4% 2 9 11 18.2% 4 5 9 44.4% 0 5 5 0.0%
30 1990 4 11 15 26.7% 1 2 3 33.3% 1 3 4 25.0% 2 2 4 50.0% 1985 2 5 7 28.6% 0 1 1 0.0% 0 5 5 0.0% — — — —
31 — — — — — — — — — — — — — — — — — 1986 — — — — — — — — 1 1 2 50.0% — — — —
Career — 22 48 70 31.4% 3 8 11 27.3% 27 27 54 50.0% 19 19 38 50.0% — 39 41 80 48.8% 65 94 159 40.9% 10 22 32 31.2% 5 17 22 22.7%

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 Leif Shiras Colin Dowdeswell
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 1980 1475 97.2 — — — — — — — 0.0% -4.60 — — — -0.03 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 1982 1455 96.8 — — — — — — — 0.0% -3.33 — — — +0.19 1977 1577 118.3 — — — — -40 +40 — 43.9% -0.53 4–4 (50%) 3–4 (43%) 100.3 +1.17
23 1983 1485 108.0 — — — — — — +87 45.5% -0.45 1–0 2–1 (67%) — +0.08 1978 1652 125.6 — — — — +16 -49 — 43.1% -0.41 13–5 (72%) 4–10 (29%) 108.9 +1.98
24 1984 1556 124.7 — — — — -88 — +124 48.1% -0.20 6–5 (55%) 10–10 (50%) 102.7 +0.82 1979 1617 120.0 — — — — -46 +21 — 43.1% -0.64 5–5 (50%) 7–5 (58%) 101.9 -0.02
25 1985 1646 126.8 — — — — -74 — +37 48.4% -0.40 7–8 (47%) 11–8 (58%) 104.1 +0.46 1980 1493 109.7 — — — — +86 +4 — 17.6% -2.09 0–4 (0%) 1–1 — -0.29
26 1986 1592 109.4 — — — — -37 — — 42.1% -0.37 1–4 (20%) 3–2 (60%) 98.0 +0.95 — — — — — — — — — — — — — — — —
27 1987 1525 112.0 — — — — -4 -15 +97 35.0% -1.00 0–2 3–4 (43%) — +0.97 1982 1521 119.2 — — — — — — — 31.3% -0.94 1–0 1–2 (33%) — -0.28
28 1988 1587 128.4 — — — — +10 — — 45.3% -0.21 3–5 (38%) 1–3 (25%) 97.5 -0.08 1983 1718 139.0 — — — — -9 -106 — 59.1% +0.92 6–4 (60%) 4–3 (57%) 104.5 +1.78
29 1989 1638 124.3 — — — — -38 — +26 45.8% -0.18 8–5 (62%) 6–5 (55%) 105.6 +0.78 1984 1609 124.9 — — — — +55 -52 -92 31.7% -1.22 4–4 (50%) 2–2 (50%) 100.4 -0.62
30 1990 1553 112.8 — — — — +19 -37 +91 28.3% -1.65 3–1 (75%) 2–4 (33%) 102.2 +0.18 1985 1477 105.6 — — — — +122 — -48 26.7% -1.57 0–3 (0%) 1–3 (25%) 94.6 +0.51
31 — — — — — — — — — — — — — — — — 1986 1511 104.0 — — — — — — — 42.9% -0.71 — — — -0.18
Career — 1687 126.2 — — — — -30 -23 +79 42.4% -0.59 29–30 (49%) 38–37 (51%) 104.6 +2.50 — 1730 128.5 — — — — +11 +10 -93 41.4% -0.57 43–48 (47%) 39–37 (51%) 103.8 +3.56

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.