H2H data updated: 2026-09-04 00:00 UTC

Ken Flach vs Vitas Gerulaitis H2H: 0-1

Vitas Gerulaitis holds a 1–0 lead over Ken Flach in their ATP head-to-head. Across 1 main-draw meeting, Vitas Gerulaitis leads 1–0 on hard courts. Most recently, Vitas Gerulaitis won the 1984 US Open round of 32 6-4 6-2 4-6 6-7 6-1.

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Ken Flach
USA Right-Handed 185 cm / 6'1"
H2H
0 – 1
1 main draw meetings
Vitas Gerulaitis
USA Age 72 Right-Handed 183 cm / 6'0"

H2H Match Log

PlayerScorePlayerMatch DataDateRoundTournamentCategorySurface
Vitas Gerulaitis #14 6-4 6-2 4-6 6-7 6-1 Ken Flach #224 Match data Sep 3, 1984* R32 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
Ken Flach #815 #56 130 1,715 52 80 39.4% 0 0 0 0 0 0
Vitas Gerulaitis #796 #3 0 2,232 528 234 69.3% 1 0 0 2 23 26

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 Vitas Gerulaitis
YrW-LWin %RankEloGSTitles YrW-LWin %RankEloGSTitles
16 — — — — — — — 1971 0–1 0.0% — 1,470 0 0
17 — — — — — — — 1972 4–5 44.4% — 1,517 0 0
18 — — — — — — — 1973 7–11 38.9% #131 1,554 0 0
19 1982 0–1 0.0% — 1,498 0 0 1974 33–19 63.5% #45 1,806 0 1
20 1983 2–3 40.0% #314 1,521 0 0 1975 39–14 73.6% #15 1,938 0 3
21 1984 7–6 53.8% #155 1,599 0 0 1976 33–21 61.1% #18 1,956 0 3
22 1985 12–12 50.0% #60 1,676 0 0 1977 60–16 78.9% #5 2,123 1 8
23 1986 4–15 21.1% #223 1,557 0 0 1978 47–15 75.8% #5 2,172 1 11
24 1987 10–13 43.5% #100 1,621 0 0 1979 71–22 76.3% #4 2,179 1 15
25 1988 7–12 36.8% #203 1,618 0 0 1980 51–18 73.9% #9 2,021 1 18
26 1989 6–7 46.2% #194 1,651 0 0 1981 44–19 69.8% #11 2,062 1 19
27 1990 3–6 33.3% #222 1,611 0 0 1982 61–15 80.3% #5 2,053 1 24
28 1991 0–2 0.0% #572 1,575 0 0 1983 32–20 61.5% #20 1,852 1 25
29 1992 0–1 0.0% #742 1,559 0 0 1984 34–21 61.8% #17 1,845 1 26
30 — — — — — — — 1985 12–15 44.4% #81 1,709 1 26
31 1994 1–1 50.0% #514 1,575 0 0 1986 0–2 0.0% #799 1,671 1 26
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 Vitas Gerulaitis
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 %
16 — — — — — — — — — — — — — — — — — 1971 — — — — — — — — 0 1 1 0.0% — — — —
17 — — — — — — — — — — — — — — — — — 1972 0 2 2 0.0% — — — — 3 2 5 60.0% 1 1 2 50.0%
18 — — — — — — — — — — — — — — — — — 1973 0 3 3 0.0% 6 2 8 75.0% 1 3 4 25.0% 0 3 3 0.0%
19 1982 — — — — 0 1 1 0.0% — — — — — — — — 1974 8 3 11 72.7% 4 4 8 50.0% 1 2 3 33.3% 20 10 30 66.7%
20 1983 1 1 2 50.0% 0 1 1 0.0% 1 1 2 50.0% — — — — 1975 6 3 9 66.7% 10 4 14 71.4% 0 1 1 0.0% 23 6 29 79.3%
21 1984 3 2 5 60.0% — — — — 3 3 6 50.0% 1 1 2 50.0% 1976 2 3 5 40.0% 11 6 17 64.7% 4 1 5 80.0% 16 11 27 59.3%
22 1985 10 8 18 55.6% — — — — 1 2 3 33.3% 1 2 3 33.3% 1977 19 4 23 82.6% 11 3 14 78.6% 20 2 22 90.9% 10 7 17 58.8%
23 1986 2 6 8 25.0% 0 3 3 0.0% 2 2 4 50.0% 0 4 4 0.0% 1978 5 1 6 83.3% 8 3 11 72.7% 5 1 6 83.3% 29 10 39 74.4%
24 1987 6 8 14 42.9% — — — — 4 4 8 50.0% 0 1 1 0.0% 1979 24 5 29 82.8% 25 6 31 80.6% 0 2 2 0.0% 22 9 31 71.0%
25 1988 2 6 8 25.0% 0 1 1 0.0% 3 2 5 60.0% 2 3 5 40.0% 1980 10 4 14 71.4% 25 6 31 80.6% 9 4 13 69.2% 7 4 11 63.6%
26 1989 3 4 7 42.9% — — — — 2 1 3 66.7% 1 2 3 33.3% 1981 18 5 23 78.3% 7 6 13 53.8% 3 1 4 75.0% 16 7 23 69.6%
27 1990 2 4 6 33.3% — — — — 1 1 2 50.0% 0 1 1 0.0% 1982 19 4 23 82.6% 16 4 20 80.0% 4 1 5 80.0% 22 6 28 78.6%
28 1991 0 1 1 0.0% — — — — — — — — 0 1 1 0.0% 1983 16 6 22 72.7% 4 4 8 50.0% 2 4 6 33.3% 10 6 16 62.5%
29 1992 0 1 1 0.0% — — — — — — — — — — — — 1984 11 6 17 64.7% 8 4 12 66.7% 3 2 5 60.0% 12 9 21 57.1%
30 — — — — — — — — — — — — — — — — — 1985 8 5 13 61.5% 0 5 5 0.0% 2 1 3 66.7% 2 4 6 33.3%
31 1994 1 1 2 50.0% — — — — — — — — — — — — 1986 — — — — — — — — — — — — 0 2 2 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% — 146 54 200 73.0% 135 57 192 70.3% 57 28 85 67.1% 190 95 285 66.7%

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 Vitas Gerulaitis
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
16 — — — — — — — — — — — — — — — — 1971 1471 99.0 — — — — — — — 40.0% 0.00 0–1 — — +0.32
17 — — — — — — — — — — — — — — — — 1972 1518 117.0 — — — — +33 — +37 48.0% +0.56 1–3 (25%) 0–2 — +0.60
18 — — — — — — — — — — — — — — — — 1973 1554 118.1 — — — — -44 +107 -37 40.0% -0.47 3–2 (60%) 1–5 (17%) 100.1 +0.35
19 1982 1499 112.4 — — — — — — — 0.0% -4.00 — — — -0.28 1974 1807 139.9 — — — — +70 -123 -293 59.2% +0.61 11–8 (58%) 12–10 (55%) 107.3 +3.68
20 1983 1522 107.7 — — — — — — — 41.7% -0.75 — 0–2 — +0.25 1975 1938 156.0 — — — — +77 -133 — 67.4% +1.26 9–6 (60%) 8–5 (62%) 107.0 -1.31
21 1984 1599 117.5 — — — — +21 — -14 51.2% -0.05 4–3 (57%) 2–4 (33%) 101.1 +0.63 1976 1956 159.4 — — — — +1 -93 -281 60.9% +0.82 7–10 (41%) 7–6 (54%) 96.0 -1.40
22 1985 1676 134.2 — — — — +19 — -94 44.8% -0.26 4–0 (100%) 4–2 (67%) 107.4 -0.49 1977 2123 166.2 — — — — -26 -161 -99 70.0% +1.55 20–11 (65%) 15–15 (50%) 106.1 -3.38
23 1986 1557 111.4 — — — — +7 -76 +56 29.4% -1.16 2–4 (33%) 2–4 (33%) 97.2 -0.12 1978 2172 174.3 — — — — +4 -120 -105 70.2% +1.52 10–4 (71%) 7–9 (44%) 101.9 -6.07
24 1987 1622 115.8 — — — — -40 — +10 48.6% -0.39 2–5 (29%) 9–4 (69%) 99.8 +1.50 1979 2179 173.1 — — — — +110 -68 — 69.5% +1.47 15–8 (65%) 15–16 (48%) 97.2 -6.08
25 1988 1618 116.8 — — — — -94 — +56 42.1% -0.67 4–5 (44%) 4–5 (44%) 98.2 -1.49 1980 2022 162.7 — — — — +123 +120 -86 67.8% +1.36 13–8 (62%) 9–6 (60%) 99.5 -5.46
26 1989 1652 118.7 — — — — -87 — +41 48.9% -0.31 3–4 (43%) 7–5 (58%) 102.6 -0.04 1981 2062 165.2 — — — — +73 -35 -98 65.4% +1.35 11–10 (52%) 8–12 (40%) 94.0 -2.99
27 1990 1612 118.0 — — — — -53 — — 44.0% -0.40 1–4 (20%) 2–1 (67%) — -0.05 1982 2054 159.0 — — — — +31 -11 -69 71.5% +1.63 17–5 (77%) 12–9 (57%) 102.7 -0.25
28 1991 1576 100.1 -1.14 -2.20 0.974 48.8% — — — 20.0% -1.20 0–1 1–1 — +0.27 1983 1852 143.3 — — — — +149 +90 +32 56.1% +0.14 9–7 (56%) 17–3 (85%) 100.8 -1.03
29 1992 1559 98.8 -2.84 -0.85 0.759 44.2% — — — 0.0% -3.00 — — — +0.08 1984 1846 145.8 — — — — +74 +56 0 55.3% +0.18 15–5 (75%) 14–10 (58%) 103.8 +0.22
30 — — — — — — — — — — — — — — — — 1985 1710 124.5 — — — — +85 +41 +155 44.9% -0.44 5–4 (56%) 7–5 (58%) 100.2 +1.07
31 1994 1576 112.6 -0.30 +1.03 0.724 46.6% — — — 40.0% -1.00 1–0 1–0 — -0.06 1986 1671 99.5 — — — — — — — 20.0% -1.60 0–1 0–1 — +0.26
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 — 2232 164.2 — — — — +61 -24 -77 63.9% +1.04 146–93 (61%) 132–114 (54%) 102.0 -2.86

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.