H2H data updated: 2026-09-03 00:00 UTC

Darren Cahill vs Ken Flach H2H: 1-1

Darren Cahill and Ken Flach are tied 1–1 in their ATP head-to-head. Across 2 main-draw meetings, Darren Cahill leads 1–0 on grass, while Ken Flach leads 1–0 on hard courts. Most recently, Darren Cahill won the 1988 Queen's Club Championships round of 32 2-6 7-5 6-3.

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Darren Cahill
AUS Age 60 Right-Handed 185 cm / 6'1"
H2H
1 – 1
2 main draw meetings
Ken Flach
USA Right-Handed 185 cm / 6'1"

H2H Match Log

PlayerScorePlayerMatch DataDateRoundTournamentCategorySurface
Darren Cahill #66 2-6 7-5 6-3 Ken Flach #88 Match data Jun 9, 1988* R32 Queen's Club Championships ATP 250 Grass
Ken Flach #187 1-6 6-4 3-6 6-1 7-6 Darren Cahill #91 Match data Sep 5, 1987* R64 US Open Grand Slam 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
Darren Cahill #538 #22 823 1,889 132 116 53.2% 0 0 0 0 2 2
Ken Flach #815 #56 130 1,715 52 80 39.4% 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 Darren Cahill Ken Flach
YrW-LWin %RankEloGSTitles YrW-LWin %RankEloGSTitles
18 1984 2–4 33.3% #268 1,502 0 0 — — — — — — —
19 1985 11–12 47.8% #132 1,578 0 0 1982 0–1 0.0% — 1,498 0 0
20 1986 5–6 45.5% #137 1,549 0 0 1983 2–3 40.0% #314 1,521 0 0
21 1987 17–18 48.6% #82 1,660 0 0 1984 7–6 53.8% #155 1,599 0 0
22 1988 32–23 58.2% #27 1,768 0 1 1985 12–12 50.0% #60 1,676 0 0
23 1989 23–19 54.8% #53 1,756 0 1 1986 4–15 21.1% #223 1,557 0 0
24 1990 22–19 53.7% #57 1,820 0 1 1987 10–13 43.5% #100 1,621 0 0
25 1991 15–6 71.4% #91 1,868 0 2 1988 7–12 36.8% #203 1,618 0 0
26 — — — — — — — 1989 6–7 46.2% #194 1,651 0 0
27 — — — — — — — 1990 3–6 33.3% #222 1,611 0 0
28 1994 5–9 35.7% #192 1,772 0 2 1991 0–2 0.0% #572 1,575 0 0
29 — — — — — — — 1992 0–1 0.0% #742 1,559 0 0
31 — — — — — — — 1994 1–1 50.0% #514 1,575 0 0
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 Darren Cahill Ken Flach
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 1984 — — — — — — — — 2 3 5 40.0% 0 1 1 0.0% — — — — — — — — — — — — — — — — —
19 1985 1 1 2 50.0% 7 5 12 58.3% 2 4 6 33.3% 1 2 3 33.3% 1982 — — — — 0 1 1 0.0% — — — — — — — —
20 1986 1 2 3 33.3% 2 2 4 50.0% 2 2 4 50.0% — — — — 1983 1 1 2 50.0% 0 1 1 0.0% 1 1 2 50.0% — — — —
21 1987 8 7 15 53.3% 8 4 12 66.7% 0 4 4 0.0% 1 3 4 25.0% 1984 3 2 5 60.0% — — — — 3 3 6 50.0% 1 1 2 50.0%
22 1988 17 11 28 60.7% 8 6 14 57.1% 7 3 10 70.0% 0 3 3 0.0% 1985 10 8 18 55.6% — — — — 1 2 3 33.3% 1 2 3 33.3%
23 1989 12 10 22 54.5% 4 4 8 50.0% 1 2 3 33.3% 6 3 9 66.7% 1986 2 6 8 25.0% 0 3 3 0.0% 2 2 4 50.0% 0 4 4 0.0%
24 1990 13 10 23 56.5% 0 1 1 0.0% 6 3 9 66.7% 3 5 8 37.5% 1987 6 8 14 42.9% — — — — 4 4 8 50.0% 0 1 1 0.0%
25 1991 9 5 14 64.3% — — — — — — — — 6 1 7 85.7% 1988 2 6 8 25.0% 0 1 1 0.0% 3 2 5 60.0% 2 3 5 40.0%
26 — — — — — — — — — — — — — — — — — 1989 3 4 7 42.9% — — — — 2 1 3 66.7% 1 2 3 33.3%
27 — — — — — — — — — — — — — — — — — 1990 2 4 6 33.3% — — — — 1 1 2 50.0% 0 1 1 0.0%
28 1994 4 6 10 40.0% 0 1 1 0.0% 1 1 2 50.0% 0 1 1 0.0% 1991 0 1 1 0.0% — — — — — — — — 0 1 1 0.0%
29 — — — — — — — — — — — — — — — — — 1992 0 1 1 0.0% — — — — — — — — — — — —
31 — — — — — — — — — — — — — — — — — 1994 1 1 2 50.0% — — — — — — — — — — — —
32 — — — — — — — — — — — — — — — — — 1995 — — — — — — — — 0 1 1 0.0% — — — —
Career — 65 52 117 55.6% 29 23 52 55.8% 21 22 43 48.8% 17 19 36 47.2% — 30 42 72 41.7% 0 6 6 0.0% 17 17 34 50.0% 5 15 20 25.0%

Performance Progression by Age

Seasons are aligned by the age each player spent most of that calendar year. Detailed serve and return statistics available for 34/35 of Darren Cahill's and 6/6 of Ken Flach's main draw matches. 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 Darren Cahill Ken Flach
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%
25 1991 20/21 4.1 2.9 59.5% 73.6% 52.5% 55.6% 42.2% 65.0% 41.0% — —/— — — — — — — — — —
28 1994 14/14 3.3 3.1 59.2% 68.9% 47.3% 52.8% 43.8% 60.2% 37.6% 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%
31 — —/— — — — — — — — — — 1994 2/2 9.5 3.0 59.7% 71.7% 42.9% 70.0% 50.0% 60.3% 28.8%
32 — —/— — — — — — — — — — 1995 1/1 10.0 14.0 48.1% 75.9% 41.5% 57.1% 41.2% 58.0% 41.3%
Career — 34/248 3.8 3.0 59.4% 71.7% 50.4% 54.4% 42.9% 63.0% 39.6% — 6/132 8.3 4.3 58.2% 72.5% 46.6% 50.9% 29.1% 61.2% 33.0%

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 Darren Cahill Ken Flach
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 1984 1503 101.4 — — — — — — +36 33.3% -0.78 2–1 (67%) 2–5 (29%) — +0.41 — — — — — — — — — — — — — — — —
19 1985 1579 119.7 — — — — -42 +39 -36 44.4% -0.25 6–1 (86%) 2–3 (40%) — +1.37 1982 1499 112.4 — — — — — — — 0.0% -4.00 — — — -0.28
20 1986 1549 104.9 — — — — -32 +66 -4 43.3% -0.53 1–1 3–1 (75%) — +1.42 1983 1522 107.7 — — — — — — — 41.7% -0.75 — 0–2 — +0.25
21 1987 1660 131.0 — — — — -40 +62 -197 48.4% -0.23 7–6 (54%) 7–7 (50%) — +1.36 1984 1599 117.5 — — — — +21 — -14 51.2% -0.05 4–3 (57%) 2–4 (33%) — +0.63
22 1988 1769 143.6 — — — — -66 -3 -129 55.3% +0.54 10–8 (56%) 11–14 (44%) — -1.01 1985 1676 134.2 — — — — +19 — -94 44.8% -0.26 4–0 (100%) 4–2 (67%) — -0.49
23 1989 1756 135.5 — — — — -3 +10 -122 51.7% +0.11 10–5 (67%) 11–7 (61%) — +0.31 1986 1557 111.4 — — — — +7 -76 +56 29.4% -1.16 2–4 (33%) 2–4 (33%) — -0.12
24 1990 1820 148.2 — — — — -2 — -130 53.3% +0.28 6–10 (38%) 7–8 (47%) — -2.15 1987 1622 115.8 — — — — -40 — +10 48.6% -0.39 2–5 (29%) 9–4 (69%) — +1.50
25 1991 1869 142.3 +3.05 +1.72 1.173 52.8% +4 — — 62.5% +0.71 7–2 (78%) 4–4 (50%) — +0.06 1988 1618 116.8 — — — — -94 — +56 42.1% -0.67 4–5 (44%) 4–5 (44%) — -1.49
26 — — — — — — — — — — — — — — — — 1989 1652 118.7 — — — — -87 — +41 48.9% -0.31 3–4 (43%) 7–5 (58%) — -0.04
27 — — — — — — — — — — — — — — — — 1990 1612 118.0 — — — — -53 — — 44.0% -0.40 1–4 (20%) 2–1 (67%) — -0.05
28 1994 1772 133.1 -0.61 +1.03 0.946 49.2% +15 — — 41.7% -0.56 2–4 (33%) 3–2 (60%) — -1.33 1991 1576 100.1 -1.14 -2.20 0.974 48.8% — — — 20.0% -1.20 0–1 1–1 — +0.27
29 — — — — — — — — — — — — — — — — 1992 1559 98.8 -2.84 -0.85 0.759 44.2% — — — 0.0% -3.00 — — — +0.08
31 — — — — — — — — — — — — — — — — 1994 1576 112.6 -0.30 +1.03 0.724 46.6% — — — 40.0% -1.00 1–0 1–0 — -0.06
32 — — — — — — — — — — — — — — — — 1995 1571 105.1 +1.22 +5.29 0.983 49.9% — — — 40.0% 0.00 0–1 0–1 — -0.28
Career — 1889 142.3 +1.54 +1.44 1.072 51.3% -20 +30 -89 51.1% +0.11 51–38 (57%) 50–51 (50%) 106.4 +0.18 — 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

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.