H2H data updated: 2026-09-02 00:00 UTC

Diego Perez vs Ken Flach H2H: 1-0

Diego Perez holds a 1–0 lead over Ken Flach in their ATP head-to-head. Across 1 main-draw meeting, Diego Perez leads 1–0 on clay. Most recently, Diego Perez won the 1986 Forest Hills round of 64 6-3 6-1.

Want to explore more matchups? Advanced rivalry search lets you browse current and historical rivalries, unbeaten records, or every matchup for a player.

Diego Perez
URU Age 64 Right-Handed 178 cm / 5'10"
H2H
1 – 0
1 main draw meetings
Ken Flach
USA Right-Handed 185 cm / 6'1"

H2H Match Log

PlayerScorePlayerMatch DataDateRoundTournamentCategorySurface
Diego Perez #63 6-3 6-1 Ken Flach #144 Match data May 7, 1986* R64 Forest Hills ATP 250 Clay

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
Diego Perez #1,263 #27 389 1,824 195 213 47.8% 0 0 0 0 1 1
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 Diego Perez Ken Flach
YrW-LWin %RankEloGSTitles YrW-LWin %RankEloGSTitles
17 1979 0–1 0.0% #579 1,486 0 0 — — — — — — —
18 1980 0–1 0.0% #211 1,473 0 0 — — — — — — —
19 1981 16–15 51.6% #94 1,652 0 0 1982 0–1 0.0% — 1,498 0 0
20 1982 11–16 40.7% #100 1,657 0 0 1983 2–3 40.0% #314 1,521 0 0
21 1983 19–14 57.6% #51 1,728 0 0 1984 7–6 53.8% #155 1,599 0 0
22 1984 15–16 48.4% #52 1,659 0 0 1985 12–12 50.0% #60 1,676 0 0
23 1985 30–21 58.8% #55 1,763 0 1 1986 4–15 21.1% #223 1,557 0 0
24 1986 30–25 54.5% #61 1,692 0 1 1987 10–13 43.5% #100 1,621 0 0
25 1987 15–19 44.1% #116 1,668 0 1 1988 7–12 36.8% #203 1,618 0 0
26 1988 12–17 41.4% #142 1,608 0 1 1989 6–7 46.2% #194 1,651 0 0
27 1989 17–17 50.0% #112 1,651 0 1 1990 3–6 33.3% #222 1,611 0 0
28 1990 12–18 40.0% #132 1,594 0 1 1991 0–2 0.0% #572 1,575 0 0
29 1991 5–9 35.7% #176 1,572 0 1 1992 0–1 0.0% #742 1,559 0 0
30 1992 11–10 52.4% #128 1,619 0 1 — — — — — — —
31 1993 2–13 13.3% #253 1,511 0 1 1994 1–1 50.0% #514 1,575 0 0
32 1994 0–1 0.0% #661 1,498 0 1 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 Diego Perez 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 %
17 1979 — — — — 0 1 1 0.0% — — — — — — — — — — — — — — — — — — — — — — — — —
18 1980 — — — — 0 1 1 0.0% — — — — — — — — — — — — — — — — — — — — — — — — —
19 1981 0 1 1 0.0% 16 14 30 53.3% — — — — — — — — 1982 — — — — 0 1 1 0.0% — — — — — — — —
20 1982 0 1 1 0.0% 11 15 26 42.3% — — — — — — — — 1983 1 1 2 50.0% 0 1 1 0.0% 1 1 2 50.0% — — — —
21 1983 4 2 6 66.7% 15 12 27 55.6% — — — — — — — — 1984 3 2 5 60.0% — — — — 3 3 6 50.0% 1 1 2 50.0%
22 1984 0 3 3 0.0% 15 12 27 55.6% — — — — 0 1 1 0.0% 1985 10 8 18 55.6% — — — — 1 2 3 33.3% 1 2 3 33.3%
23 1985 2 5 7 28.6% 28 16 44 63.6% — — — — — — — — 1986 2 6 8 25.0% 0 3 3 0.0% 2 2 4 50.0% 0 4 4 0.0%
24 1986 8 7 15 53.3% 22 18 40 55.0% — — — — — — — — 1987 6 8 14 42.9% — — — — 4 4 8 50.0% 0 1 1 0.0%
25 1987 7 7 14 50.0% 8 11 19 42.1% — — — — 0 1 1 0.0% 1988 2 6 8 25.0% 0 1 1 0.0% 3 2 5 60.0% 2 3 5 40.0%
26 1988 6 8 14 42.9% 6 9 15 40.0% — — — — — — — — 1989 3 4 7 42.9% — — — — 2 1 3 66.7% 1 2 3 33.3%
27 1989 1 3 4 25.0% 15 13 28 53.6% — — — — 1 1 2 50.0% 1990 2 4 6 33.3% — — — — 1 1 2 50.0% 0 1 1 0.0%
28 1990 1 3 4 25.0% 11 12 23 47.8% 0 1 1 0.0% 0 2 2 0.0% 1991 0 1 1 0.0% — — — — — — — — 0 1 1 0.0%
29 1991 2 2 4 50.0% 3 7 10 30.0% — — — — — — — — 1992 0 1 1 0.0% — — — — — — — — — — — —
30 1992 1 4 5 20.0% 10 6 16 62.5% — — — — — — — — — — — — — — — — — — — — — — — — —
31 1993 0 3 3 0.0% 2 8 10 20.0% 0 1 1 0.0% 0 1 1 0.0% 1994 1 1 2 50.0% — — — — — — — — — — — —
32 1994 — — — — 0 1 1 0.0% — — — — — — — — 1995 — — — — — — — — 0 1 1 0.0% — — — —
Career — 32 49 81 39.5% 162 156 318 50.9% 0 2 2 0.0% 1 6 7 14.3% — 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 44/51 of Diego Perez'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 Diego Perez 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%
28 — —/— — — — — — — — — — 1991 2/2 7.5 1.5 65.6% 70.8% 56.1% 41.7% 16.7% 65.7% 33.4%
29 1991 10/14 2.5 1.6 68.2% 64.4% 54.5% 54.3% 44.9% 61.3% 42.0% 1992 1/1 6.0 3.0 50.8% 74.2% 40.0% 25.0% 0.0% 57.4% 32.4%
30 1992 20/21 3.0 2.4 60.0% 63.8% 50.4% 52.5% 45.3% 58.6% 43.7% — —/— — — — — — — — — —
31 1993 13/15 1.8 3.7 58.0% 60.3% 44.7% 49.0% 31.2% 53.0% 36.9% 1994 2/2 9.5 3.0 59.7% 71.7% 42.9% 70.0% 50.0% 60.3% 28.8%
32 1994 1/1 0.0 3.0 63.0% 47.1% 43.3% 60.0% 28.6% 45.7% 42.9% 1995 1/1 10.0 14.0 48.1% 75.9% 41.5% 57.1% 41.2% 58.0% 41.3%
Career — 44/408 2.5 2.6 61.4% 62.5% 49.5% 52.0% 40.7% 57.3% 41.3% — 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 Diego Perez 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
17 1979 1486 98.9 — — — — — — — 0.0% -2.50 — 0–1 — +0.22 — — — — — — — — — — — — — — — —
18 1980 1473 100.1 — — — — — — — 33.3% -2.00 0–1 — — +0.11 — — — — — — — — — — — — — — — —
19 1981 1652 145.1 — — — — — +48 — 56.3% +0.03 3–5 (38%) 1–2 (33%) — -0.45 1982 1499 112.4 — — — — — — — 0.0% -4.00 — — — -0.28
20 1982 1658 141.1 — — — — — +31 — 47.8% -0.18 4–9 (31%) 4–6 (40%) — -0.92 1983 1522 107.7 — — — — — — — 41.7% -0.75 — 0–2 — +0.25
21 1983 1728 141.3 — — — — -150 +8 — 54.1% +0.43 6–5 (55%) 4–3 (57%) — -0.26 1984 1599 117.5 — — — — +21 — -14 51.2% -0.05 4–3 (57%) 2–4 (33%) — +0.63
22 1984 1659 138.8 — — — — -149 +78 — 52.0% +0.03 2–8 (20%) 1–4 (20%) — -0.21 1985 1676 134.2 — — — — +19 — -94 44.8% -0.26 4–0 (100%) 4–2 (67%) — -0.49
23 1985 1763 138.5 — — — — -270 +48 — 53.9% +0.37 9–2 (82%) 3–6 (33%) — +0.70 1986 1557 111.4 — — — — +7 -76 +56 29.4% -1.16 2–4 (33%) 2–4 (33%) — -0.12
24 1986 1693 137.4 — — — — -108 +6 — 51.6% +0.21 9–7 (56%) 5–9 (36%) — +0.43 1987 1622 115.8 — — — — -40 — +10 48.6% -0.39 2–5 (29%) 9–4 (69%) — +1.50
25 1987 1669 132.4 — — — — -52 -12 — 44.7% -0.31 4–3 (57%) 1–4 (20%) — -2.18 1988 1618 116.8 — — — — -94 — +56 42.1% -0.67 4–5 (44%) 4–5 (44%) — -1.49
26 1988 1609 125.1 — — — — -4 0 — 45.3% -0.41 8–9 (47%) 4–6 (40%) — -0.14 1989 1652 118.7 — — — — -87 — +41 48.9% -0.31 3–4 (43%) 7–5 (58%) — -0.04
27 1989 1651 135.0 — — — — -57 +26 — 50.0% +0.10 4–5 (44%) 4–4 (50%) — -1.06 1990 1612 118.0 — — — — -53 — — 44.0% -0.40 1–4 (20%) 2–1 (67%) — -0.05
28 1990 1594 127.7 — — — — -38 +95 — 42.3% -0.83 4–8 (33%) 6–4 (60%) — -0.79 1991 1576 100.1 -1.14 -2.20 0.974 48.8% — — — 20.0% -1.20 0–1 1–1 — +0.27
29 1991 1573 118.5 -0.06 +0.92 1.086 51.0% -20 +66 — 41.7% -0.36 0–3 (0%) 2–3 (40%) — +0.11 1992 1559 98.8 -2.84 -0.85 0.759 44.2% — — — 0.0% -3.00 — — — +0.08
30 1992 1619 123.6 -1.94 +2.72 1.058 51.0% -104 +109 — 50.9% +0.25 5–3 (63%) 4–4 (50%) — +0.51 — — — — — — — — — — — — — — — —
31 1993 1511 108.3 -3.89 -1.43 0.785 45.0% -47 +102 — 29.3% -1.93 0–6 (0%) 2–0 — -0.34 1994 1576 112.6 -0.30 +1.03 0.724 46.6% — — — 40.0% -1.00 1–0 1–0 — -0.06
32 1994 1498 98.3 +1.21 -2.79 0.789 44.4% — — — 0.0% -3.50 — — — +0.06 1995 1571 105.1 +1.22 +5.29 0.983 49.9% — — — 40.0% 0.00 0–1 0–1 — -0.28
Career — 1825 141.5 -2.02 +0.96 0.967 49.1% -84 +41 — 48.7% -0.11 58–74 (44%) 41–56 (42%) 92.5 -1.03 — 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.