H2H data updated: 2026-09-05 00:00 UTC

Nicolas Pereira vs Ken Flach H2H: 1-0

Nicolas Pereira holds a 1–0 lead over Ken Flach in their ATP head-to-head. Across 1 main-draw meeting, Nicolas Pereira leads 1–0 on carpet. Most recently, Nicolas Pereira won the 1991 Chicago round of 32 6-7(6) 7-5 6-4.

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Nicolas Pereira
VEN Age 55 Right-Handed 188 cm / 6'2"
H2H
1 – 0
1 main draw meetings
Ken Flach
USA Right-Handed 185 cm / 6'1"

H2H Match Log

PlayerScorePlayerMatch DataDateRoundTournamentCategorySurface
Nicolas Pereira #242 6-7(6) 7-5 6-4 Ken Flach #220 Match data Feb 28, 1991* R32 Chicago ATP World Series → modern equivalent ATP 250 Carpet

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
Nicolas Pereira #1,101 #74 658 1,690 64 115 35.8% 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 Nicolas Pereira Ken Flach
YrW-LWin %RankEloGSTitles YrW-LWin %RankEloGSTitles
17 1988 2–2 50.0% #151 1,526 0 0 — — — — — — —
18 1989 12–21 36.4% #121 1,582 0 0 — — — — — — —
19 1990 5–15 25.0% #238 1,503 0 0 1982 0–1 0.0% — 1,498 0 0
20 1991 2–6 25.0% #145 1,483 0 0 1983 2–3 40.0% #314 1,521 0 0
21 1992 0–1 0.0% #129 1,466 0 0 1984 7–6 53.8% #155 1,599 0 0
22 1993 4–11 26.7% #142 1,472 0 0 1985 12–12 50.0% #60 1,676 0 0
23 1994 10–14 41.7% #116 1,547 0 1 1986 4–15 21.1% #223 1,557 0 0
24 1995 14–18 43.8% #122 1,610 0 1 1987 10–13 43.5% #100 1,621 0 0
25 1996 15–20 42.9% #110 1,570 0 2 1988 7–12 36.8% #203 1,618 0 0
26 1997 0–7 0.0% #472 1,489 0 2 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 Nicolas Pereira 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 1988 1 1 2 50.0% 1 1 2 50.0% — — — — — — — — — — — — — — — — — — — — — — — — —
18 1989 9 12 21 42.9% 1 4 5 20.0% 1 3 4 25.0% 1 2 3 33.3% — — — — — — — — — — — — — — — — —
19 1990 4 10 14 28.6% 0 3 3 0.0% — — — — 1 2 3 33.3% 1982 — — — — 0 1 1 0.0% — — — — — — — —
20 1991 1 4 5 20.0% — — — — 0 1 1 0.0% 1 1 2 50.0% 1983 1 1 2 50.0% 0 1 1 0.0% 1 1 2 50.0% — — — —
21 1992 — — — — 0 1 1 0.0% — — — — — — — — 1984 3 2 5 60.0% — — — — 3 3 6 50.0% 1 1 2 50.0%
22 1993 2 5 7 28.6% 1 2 3 33.3% 1 4 5 20.0% — — — — 1985 10 8 18 55.6% — — — — 1 2 3 33.3% 1 2 3 33.3%
23 1994 1 4 5 20.0% 5 3 8 62.5% 3 4 7 42.9% 1 3 4 25.0% 1986 2 6 8 25.0% 0 3 3 0.0% 2 2 4 50.0% 0 4 4 0.0%
24 1995 8 9 17 47.1% 6 7 13 46.2% 0 2 2 0.0% — — — — 1987 6 8 14 42.9% — — — — 4 4 8 50.0% 0 1 1 0.0%
25 1996 7 11 18 38.9% 1 4 5 20.0% 6 3 9 66.7% 1 2 3 33.3% 1988 2 6 8 25.0% 0 1 1 0.0% 3 2 5 60.0% 2 3 5 40.0%
26 1997 0 5 5 0.0% 0 1 1 0.0% 0 1 1 0.0% — — — — 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 — — — — — — — — — — — — — — — — — 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 — 33 61 94 35.1% 15 26 41 36.6% 11 18 29 37.9% 5 10 15 33.3% — 30 42 72 41.7% 0 6 6 0.0% 17 17 34 50.0% 5 15 20 25.0%

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 Nicolas Pereira 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 1988 1527 112.7 — — — — — — — 55.6% +0.22 0–1 1–1 — -0.20 — — — — — — — — — — — — — — — —
18 1989 1583 133.9 — — — — +11 -61 -18 42.2% -0.60 2–7 (22%) 10–6 (63%) 101.5 -1.22 — — — — — — — — — — — — — — — —
19 1990 1504 113.9 — — — — +43 -15 — 30.6% -1.25 1–3 (25%) 6–6 (50%) 97.7 +0.53 1982 1499 112.4 — — — — — — — 0.0% -4.00 — — — -0.28
20 1991 1483 107.0 -0.60 -1.86 0.833 47.2% +34 — — 31.6% -0.90 1–2 (33%) 1–4 (20%) 96.4 +0.13 1983 1522 107.7 — — — — — — — 41.7% -0.75 — 0–2 — +0.25
21 1992 1467 98.9 +0.20 -0.48 0.762 44.6% — — — 33.3% -1.33 0–1 0–1 — +0.23 1984 1599 117.5 — — — — +21 — -14 51.2% -0.05 4–3 (57%) 2–4 (33%) 101.1 +0.63
22 1993 1472 114.4 -1.19 -3.12 0.797 46.3% +45 0 +69 35.7% -1.07 1–3 (25%) 2–3 (40%) 96.6 +0.31 1985 1676 134.2 — — — — +19 — -94 44.8% -0.26 4–0 (100%) 4–2 (67%) 107.4 -0.49
23 1994 1547 123.5 +1.64 -3.77 0.880 47.9% -65 +8 +37 42.9% -0.41 5–4 (56%) 6–6 (50%) 102.8 +0.90 1986 1557 111.4 — — — — +7 -76 +56 29.4% -1.16 2–4 (33%) 2–4 (33%) 97.2 -0.12
24 1995 1610 125.6 +1.27 -1.84 0.956 49.4% -25 -18 — 47.1% -0.32 3–7 (30%) 5–12 (29%) 91.0 +0.61 1987 1622 115.8 — — — — -40 — +10 48.6% -0.39 2–5 (29%) 9–4 (69%) 99.8 +1.50
25 1996 1570 123.0 +1.01 -1.88 0.962 49.1% +2 -46 +100 45.9% -0.53 3–7 (30%) 8–8 (50%) 96.1 +1.11 1988 1618 116.8 — — — — -94 — +56 42.1% -0.67 4–5 (44%) 4–5 (44%) 98.2 -1.49
26 1997 1489 103.4 -1.59 -3.08 0.679 43.7% +28 — — 11.1% -2.33 0–1 1–1 — -0.21 1989 1652 118.7 — — — — -87 — +41 48.9% -0.31 3–4 (43%) 7–5 (58%) 102.6 -0.04
27 — — — — — — — — — — — — — — — — 1990 1612 118.0 — — — — -53 — — 44.0% -0.40 1–4 (20%) 2–1 (67%) — -0.05
28 — — — — — — — — — — — — — — — — 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 — 1690 127.5 +0.59 -2.43 0.889 48.0% +7 -20 +57 40.6% -0.69 16–36 (31%) 40–48 (45%) 90.2 +1.22 — 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.