H2H data updated: 2026-09-01 00:00 UTC

Ken Flach vs Peter Doohan H2H: 1-0

Ken Flach holds a 1–0 lead over Peter Doohan in their ATP head-to-head. Across 1 main-draw meeting, Ken Flach leads 1–0 on grass. Most recently, Ken Flach won the 1988 Wimbledon round of 128 7-5 7-6 6-3.

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Ken Flach
USA Right-Handed 185 cm / 6'1"
H2H
1 – 0
1 main draw meetings
Peter Doohan
AUS Right-Handed 190 cm / 6'3"

H2H Match Log

PlayerScorePlayerMatch DataDateRoundTournamentCategorySurface
Ken Flach #94 7-5 7-6 6-3 Peter Doohan #122 Match data Jun 22, 1988* R128 Wimbledon Grand Slam 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
Ken Flach #815 #56 130 1,715 52 80 39.4% 0 0 0 0 0 0
Peter Doohan #1,102 #43 140 1,737 50 82 37.9% 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 Ken Flach Peter Doohan
YrW-LWin %RankEloGSTitles YrW-LWin %RankEloGSTitles
18 — — — — — — — 1979 0–1 0.0% #480 1,491 0 0
19 1982 0–1 0.0% — 1,498 0 0 1980 1–2 33.3% — 1,493 0 0
20 1983 2–3 40.0% #314 1,521 0 0 1981 0–2 0.0% — 1,485 0 0
21 1984 7–6 53.8% #155 1,599 0 0 1982 3–3 50.0% — 1,505 0 0
22 1985 12–12 50.0% #60 1,676 0 0 1983 1–2 33.3% #363 1,501 0 0
23 1986 4–15 21.1% #223 1,557 0 0 1984 10–9 52.6% #85 1,613 0 1
24 1987 10–13 43.5% #100 1,621 0 0 1985 18–19 48.6% #101 1,682 0 1
25 1988 7–12 36.8% #203 1,618 0 0 1986 0–7 0.0% #301 1,555 0 1
26 1989 6–7 46.2% #194 1,651 0 0 1987 12–15 44.4% #72 1,619 0 1
27 1990 3–6 33.3% #222 1,611 0 0 1988 4–13 23.5% #187 1,485 0 1
28 1991 0–2 0.0% #572 1,575 0 0 1989 1–5 16.7% #172 1,451 0 1
29 1992 0–1 0.0% #742 1,559 0 0 1990 0–2 0.0% #331 1,435 0 1
30 — — — — — — — 1991 0–1 0.0% #1131 1,427 0 1
31 1994 1–1 50.0% #514 1,575 0 0 1992 0–1 0.0% #1097 1,421 0 1
32 1995 0–1 0.0% #835 1,570 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 Ken Flach Peter Doohan
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 %
18 — — — — — — — — — — — — — — — — — 1979 — — — — — — — — 0 1 1 0.0% — — — —
19 1982 — — — — 0 1 1 0.0% — — — — — — — — 1980 — — — — — — — — 1 2 3 33.3% — — — —
20 1983 1 1 2 50.0% 0 1 1 0.0% 1 1 2 50.0% — — — — 1981 — — — — — — — — 0 2 2 0.0% — — — —
21 1984 3 2 5 60.0% — — — — 3 3 6 50.0% 1 1 2 50.0% 1982 — — — — — — — — 3 3 6 50.0% — — — —
22 1985 10 8 18 55.6% — — — — 1 2 3 33.3% 1 2 3 33.3% 1983 — — — — — — — — 1 2 3 33.3% — — — —
23 1986 2 6 8 25.0% 0 3 3 0.0% 2 2 4 50.0% 0 4 4 0.0% 1984 1 3 4 25.0% 1 3 4 25.0% 8 3 11 72.7% — — — —
24 1987 6 8 14 42.9% — — — — 4 4 8 50.0% 0 1 1 0.0% 1985 4 9 13 30.8% 2 1 3 66.7% 12 8 20 60.0% 0 1 1 0.0%
25 1988 2 6 8 25.0% 0 1 1 0.0% 3 2 5 60.0% 2 3 5 40.0% 1986 0 2 2 0.0% 0 3 3 0.0% 0 2 2 0.0% — — — —
26 1989 3 4 7 42.9% — — — — 2 1 3 66.7% 1 2 3 33.3% 1987 2 7 9 22.2% — — — — 10 7 17 58.8% 0 1 1 0.0%
27 1990 2 4 6 33.3% — — — — 1 1 2 50.0% 0 1 1 0.0% 1988 1 8 9 11.1% — — — — 3 5 8 37.5% — — — —
28 1991 0 1 1 0.0% — — — — — — — — 0 1 1 0.0% 1989 0 4 4 0.0% — — — — — — — — 1 1 2 50.0%
29 1992 0 1 1 0.0% — — — — — — — — — — — — 1990 0 2 2 0.0% — — — — — — — — — — — —
30 — — — — — — — — — — — — — — — — — 1991 0 1 1 0.0% — — — — — — — — — — — —
31 1994 1 1 2 50.0% — — — — — — — — — — — — 1992 0 1 1 0.0% — — — — — — — — — — — —
32 1995 — — — — — — — — 0 1 1 0.0% — — — — — — — — — — — — — — — — — — — — —
Career — 30 42 72 41.7% 0 6 6 0.0% 17 17 34 50.0% 5 15 20 25.0% — 8 37 45 17.8% 3 7 10 30.0% 38 35 73 52.1% 1 3 4 25.0%

Performance Progression by Age

Seasons are aligned by the age each player spent most of that calendar year. Sample is shown as matches with detailed serve and return statistics / total main draw matches. Bold green marks the stronger value when both stat samples contain at least 5 matches; lower is better for DFs/M.

Age Ken Flach Peter Doohan
Yr Sample Aces/M DFs/M 1st Sv% 1st Pts% 2nd Pts% BP Saved% BP Conv% Svc Pts% Ret Pts% Yr Sample Aces/M DFs/M 1st Sv% 1st Pts% 2nd Pts% BP Saved% BP Conv% Svc Pts% Ret Pts%
28 1991 2/2 7.5 1.5 65.6% 70.8% 56.1% 41.7% 16.7% 65.7% 33.4% — —/— — — — — — — — — —
29 1992 1/1 6.0 3.0 50.8% 74.2% 40.0% 25.0% 0.0% 57.4% 32.4% — —/— — — — — — — — — —
30 — —/— — — — — — — — — — 1991 1/1 7.0 8.0 65.8% 65.3% 51.3% 42.9% 50.0% 60.5% 25.8%
31 1994 2/2 9.5 3.0 59.7% 71.7% 42.9% 70.0% 50.0% 60.3% 28.8% 1992 1/1 1.0 4.0 66.7% 55.9% 58.8% 40.0% — 56.9% 18.2%
32 1995 1/1 10.0 14.0 48.1% 75.9% 41.5% 57.1% 41.2% 58.0% 41.3% — —/— — — — — — — — — —
Career — 6/132 8.3 4.3 58.2% 72.5% 46.6% 50.9% 29.1% 61.2% 33.0% — 2/132 4.0 6.0 66.2% 60.6% 55.1% 41.4% 25.0% 58.7% 22.0%

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 Ken Flach Peter Doohan
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 — — — — — — — — — — — — — — — — 1979 1492 99.9 — — — — — — — 0.0% -2.67 — — — -0.08
19 1982 1499 112.4 — — — — — — — 0.0% -4.00 — — — -0.28 1980 1494 102.1 — — — — — — +22 25.0% -1.63 1–0 0–1 — +0.01
20 1983 1522 107.7 — — — — — — — 41.7% -0.75 — 0–2 — +0.25 1981 1485 113.1 — — — — — — — 20.0% -1.00 0–1 0–2 — -0.30
21 1984 1599 117.5 — — — — +21 — -14 51.2% -0.05 4–3 (57%) 2–4 (33%) — +0.63 1982 1506 112.2 — — — — — — +15 46.2% +0.23 — 1–4 (20%) — +0.42
22 1985 1676 134.2 — — — — +19 — -94 44.8% -0.26 4–0 (100%) 4–2 (67%) — -0.49 1983 1501 111.3 — — — — — — +33 28.6% 0.00 — 0–2 — +0.19
23 1986 1557 111.4 — — — — +7 -76 +56 29.4% -1.16 2–4 (33%) 2–4 (33%) — -0.12 1984 1614 118.7 — — — — -73 -99 +60 53.1% +0.02 3–4 (43%) 7–4 (64%) — +1.08
24 1987 1622 115.8 — — — — -40 — +10 48.6% -0.39 2–5 (29%) 9–4 (69%) — +1.50 1985 1683 129.4 — — — — -157 -162 +79 51.2% +0.01 1–8 (11%) 5–3 (63%) — +0.42
25 1988 1618 116.8 — — — — -94 — +56 42.1% -0.67 4–5 (44%) 4–5 (44%) — -1.49 1986 1555 90.8 — — — — — -80 — 0.0% -3.09 — 0–1 — +0.41
26 1989 1652 118.7 — — — — -87 — +41 48.9% -0.31 3–4 (43%) 7–5 (58%) — -0.04 1987 1619 131.2 — — — — -147 — +163 45.6% -0.29 5–5 (50%) 8–9 (47%) — -0.16
27 1990 1612 118.0 — — — — -53 — — 44.0% -0.40 1–4 (20%) 2–1 (67%) — -0.05 1988 1485 100.1 — — — — -71 — +180 31.0% -1.17 2–3 (40%) 2–3 (40%) — +1.01
28 1991 1576 100.1 -1.14 -2.20 0.974 48.8% — — — 20.0% -1.20 0–1 1–1 — +0.27 1989 1451 100.7 — — — — -54 — — 14.3% -1.78 1–0 0–1 — +0.50
29 1992 1559 98.8 -2.84 -0.85 0.759 44.2% — — — 0.0% -3.00 — — — +0.08 1990 1435 98.9 — — — — — — — 0.0% -4.40 — — — -0.10
30 — — — — — — — — — — — — — — — — 1991 1428 101.8 +1.97 -1.36 0.654 44.9% — — — 0.0% -1.67 — 0–1 — -0.04
31 1994 1576 112.6 -0.30 +1.03 0.724 46.6% — — — 40.0% -1.00 1–0 1–0 — -0.06 1992 1422 100.9 -2.70 -1.59 0.421 38.9% — — — 0.0% -3.00 — — — -0.07
32 1995 1571 105.1 +1.22 +5.29 0.983 49.9% — — — 40.0% 0.00 0–1 0–1 — -0.28 — — — — — — — — — — — — — — — —
Career — 1715 126.9 -0.75 +0.35 0.851 47.5% -29 -76 +12 43.2% -0.53 21–27 (44%) 32–29 (52%) 100.9 -0.06 — 1738 123.6 -0.37 -1.48 0.532 41.9% -114 -112 +99 40.4% -0.57 13–21 (38%) 23–31 (43%) 93.6 +2.49

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.