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

Ken Flach vs Gary Muller H2H: 0-1

Gary Muller holds a 1–0 lead over Ken Flach in their ATP head-to-head. Across 1 main-draw meeting, Gary Muller leads 1–0 on hard courts. Most recently, Gary Muller won the 1988 Memphis round of 64 6-4 6-3.

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Ken Flach
USA Right-Handed 185 cm / 6'1"
H2H
0 – 1
1 main draw meetings
Gary Muller
RSA Age 61 Left-Handed

H2H Match Log

PlayerScorePlayerMatch DataDateRoundTournamentCategorySurface
Gary Muller 6-4 6-3 Ken Flach #119 Match data Feb 17, 1988* R64 Memphis 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
Ken Flach #815 #56 130 1,715 52 80 39.4% 0 0 0 0 0 0
Gary Muller — — — 1,703 — — — 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 Ken Flach Gary Muller
YrW-LWin %RankEloGSTitles YrW-LWin %RankEloGSTitles
19 1982 0–1 0.0% — 1,498 0 0 — — — — — — —
20 1983 2–3 40.0% #314 1,521 0 0 — — — — — — —
21 1984 7–6 53.8% #155 1,599 0 0 — — — — — — —
22 1985 12–12 50.0% #60 1,676 0 0 — — — — — — —
23 1986 4–15 21.1% #223 1,557 0 0 — — — — — — —
24 1987 10–13 43.5% #100 1,621 0 0 — — — — — — —
25 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 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 Ken Flach Gary Muller
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 %
19 1982 — — — — 0 1 1 0.0% — — — — — — — — — — — — — — — — — — — — — — — — —
20 1983 1 1 2 50.0% 0 1 1 0.0% 1 1 2 50.0% — — — — 1985 0 1 1 0.0% — — — — 0 3 3 0.0% — — — —
21 1984 3 2 5 60.0% — — — — 3 3 6 50.0% 1 1 2 50.0% 1986 2 2 4 50.0% 0 1 1 0.0% — — — — — — — —
22 1985 10 8 18 55.6% — — — — 1 2 3 33.3% 1 2 3 33.3% 1987 9 8 17 52.9% 3 2 5 60.0% 2 2 4 50.0% 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% 1988 6 9 15 40.0% 0 1 1 0.0% 1 4 5 20.0% 1 1 2 50.0%
24 1987 6 8 14 42.9% — — — — 4 4 8 50.0% 0 1 1 0.0% 1989 6 7 13 46.2% — — — — 3 4 7 42.9% — — — —
25 1988 2 6 8 25.0% 0 1 1 0.0% 3 2 5 60.0% 2 3 5 40.0% 1990 10 11 21 47.6% 0 1 1 0.0% 4 4 8 50.0% 4 4 8 50.0%
26 1989 3 4 7 42.9% — — — — 2 1 3 66.7% 1 2 3 33.3% 1991 6 13 19 31.6% 1 1 2 50.0% 4 3 7 57.1% 4 6 10 40.0%
27 1990 2 4 6 33.3% — — — — 1 1 2 50.0% 0 1 1 0.0% 1992 10 12 22 45.5% — — — — 2 4 6 33.3% 0 1 1 0.0%
28 1991 0 1 1 0.0% — — — — — — — — 0 1 1 0.0% 1993 1 5 6 16.7% — — — — — — — — — — — —
29 1992 0 1 1 0.0% — — — — — — — — — — — — 1994 1 2 3 33.3% — — — — — — — — — — — —
30 — — — — — — — — — — — — — — — — — 1995 0 1 1 0.0% — — — — — — — — — — — —
31 1994 1 1 2 50.0% — — — — — — — — — — — — — — — — — — — — — — — — — — — — —
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% — 51 71 122 41.8% 4 6 10 40.0% 16 24 40 40.0% 10 14 24 41.7%

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 Gary Muller
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
19 1982 1499 112.4 — — — — — — — 0.0% -4.00 — — — -0.28 — — — — — — — — — — — — — — — —
20 1983 1522 107.7 — — — — — — — 41.7% -0.75 — 0–2 — +0.25 1985 1467 120.1 — — — — — — +47 31.3% -1.13 0–2 2–2 (50%) — -0.20
21 1984 1599 117.5 — — — — +21 — -14 51.2% -0.05 4–3 (57%) 2–4 (33%) — +0.63 1986 1499 116.8 — — — — +64 — — 36.4% -0.64 1–0 1–2 (33%) — -0.13
22 1985 1676 134.2 — — — — +19 — -94 44.8% -0.26 4–0 (100%) 4–2 (67%) — -0.49 1987 1648 128.2 — — — — -8 -67 -89 46.6% -0.29 6–1 (86%) 6–6 (50%) — +0.03
23 1986 1557 111.4 — — — — +7 -76 +56 29.4% -1.16 2–4 (33%) 2–4 (33%) — -0.12 1988 1608 120.2 — — — — +36 — -96 35.1% -1.12 4–3 (57%) 6–6 (50%) — -1.02
24 1987 1622 115.8 — — — — -40 — +10 48.6% -0.39 2–5 (29%) 9–4 (69%) — +1.50 1989 1621 120.9 — — — — +17 — -86 43.8% -0.54 4–2 (67%) 3–2 (60%) — -0.05
25 1988 1618 116.8 — — — — -94 — +56 42.1% -0.67 4–5 (44%) 4–5 (44%) — -1.49 1990 1663 135.0 — — — — +6 — -44 48.5% -0.07 5–7 (42%) 10–12 (45%) — -0.19
26 1989 1652 118.7 — — — — -87 — +41 48.9% -0.31 3–4 (43%) 7–5 (58%) — -0.04 1991 1578 120.3 — — — — -20 — +67 39.6% -0.53 7–5 (58%) 9–19 (32%) — +0.39
27 1990 1612 118.0 — — — — -53 — — 44.0% -0.40 1–4 (20%) 2–1 (67%) — -0.05 1992 1556 119.7 — — — — +2 — +84 42.6% -0.54 3–4 (43%) 9–9 (50%) — +1.19
28 1991 1576 100.1 -1.14 -2.20 0.974 48.8% — — — 20.0% -1.20 0–1 1–1 — +0.27 1993 1521 115.1 — — — — -12 — — 26.7% -1.20 0–2 1–3 (25%) — -0.11
29 1992 1559 98.8 -2.84 -0.85 0.759 44.2% — — — 0.0% -3.00 — — — +0.08 1994 1530 113.6 — — — — -17 — — 28.6% -1.14 1–0 1–2 (33%) — -0.18
30 — — — — — — — — — — — — — — — — 1995 1511 97.7 — — — — — — — 33.3% -1.33 0–1 1–0 — +0.28
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 — 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 — 1703 131.0 — — — — +3 -67 -17 41.8% -0.53 31–27 (53%) 49–63 (44%) 101.8 +0.01

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.