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

Guillermo Perez-Roldan vs Ken Flach H2H: 1-0

Guillermo Perez-Roldan holds a 1–0 lead over Ken Flach in their ATP head-to-head. Across 1 main-draw meeting, Guillermo Perez-Roldan leads 1–0 on hard courts. Most recently, Guillermo Perez-Roldan won the 1988 US Open round of 128 6-7 7-6 3-6 6-1 7-6.

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Guillermo Perez-Roldan
ARG Age 56 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
Guillermo Perez-Roldan #14 6-7 7-6 3-6 6-1 7-6 Ken Flach #94 Match data Aug 31, 1988* R128 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
Guillermo Perez-Roldan #1,461 #13 1,222 1,932 236 129 64.7% 0 0 0 0 9 9
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 Guillermo Perez-Roldan Ken Flach
YrW-LWin %RankEloGSTitles YrW-LWin %RankEloGSTitles
16 1986 9–7 56.2% #109 1,590 0 0 — — — — — — —
17 1987 40–15 72.7% #19 1,809 0 3 — — — — — — —
18 1988 43–19 69.4% #18 1,836 0 4 — — — — — — —
19 1989 33–16 67.3% #32 1,808 0 5 1982 0–1 0.0% — 1,498 0 0
20 1990 41–21 66.1% #14 1,789 0 6 1983 2–3 40.0% #314 1,521 0 0
21 1991 26–16 61.9% #40 1,767 0 7 1984 7–6 53.8% #155 1,599 0 0
22 1992 24–18 57.1% #50 1,646 0 8 1985 12–12 50.0% #60 1,676 0 0
23 1993 19–11 63.3% #82 1,754 0 9 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 1996 1–6 14.3% #420 1,650 0 9 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 Guillermo Perez-Roldan 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 %
16 1986 — — — — 9 7 16 56.3% — — — — — — — — — — — — — — — — — — — — — — — — —
17 1987 0 1 1 0.0% 40 14 54 74.1% — — — — — — — — — — — — — — — — — — — — — — — — —
18 1988 2 4 6 33.3% 41 14 55 74.5% — — — — 0 1 1 0.0% — — — — — — — — — — — — — — — — —
19 1989 2 4 6 33.3% 31 12 43 72.1% — — — — — — — — 1982 — — — — 0 1 1 0.0% — — — — — — — —
20 1990 — — — — 41 19 60 68.3% — — — — 0 2 2 0.0% 1983 1 1 2 50.0% 0 1 1 0.0% 1 1 2 50.0% — — — —
21 1991 3 3 6 50.0% 23 13 36 63.9% — — — — — — — — 1984 3 2 5 60.0% — — — — 3 3 6 50.0% 1 1 2 50.0%
22 1992 0 2 2 0.0% 24 16 40 60.0% — — — — — — — — 1985 10 8 18 55.6% — — — — 1 2 3 33.3% 1 2 3 33.3%
23 1993 — — — — 19 11 30 63.3% — — — — — — — — 1986 2 6 8 25.0% 0 3 3 0.0% 2 2 4 50.0% 0 4 4 0.0%
24 — — — — — — — — — — — — — — — — — 1987 6 8 14 42.9% — — — — 4 4 8 50.0% 0 1 1 0.0%
25 — — — — — — — — — — — — — — — — — 1988 2 6 8 25.0% 0 1 1 0.0% 3 2 5 60.0% 2 3 5 40.0%
26 1996 — — — — 1 6 7 14.3% — — — — — — — — 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 — 7 14 21 33.3% 229 112 341 67.2% — — — — 0 3 3 0.0% — 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 Guillermo Perez-Roldan 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
16 1986 1590 122.7 — — — — — +35 — 55.0% +0.40 4–4 (50%) 0–1 — +1.20 — — — — — — — — — — — — — — — —
17 1987 1810 140.7 — — — — — +62 — 64.3% +0.99 13–4 (76%) 8–7 (53%) 106.8 +3.71 — — — — — — — — — — — — — — — —
18 1988 1837 152.0 — — — — -321 +113 — 65.8% +1.04 8–8 (50%) 12–5 (71%) 102.3 0.00 — — — — — — — — — — — — — — — —
19 1989 1809 142.5 — — — — -303 +105 — 61.3% +0.93 10–4 (71%) 8–5 (62%) 103.0 +0.62 1982 1499 112.4 — — — — — — — 0.0% -4.00 — — — -0.28
20 1990 1790 146.4 — — — — — +115 — 61.7% +0.72 14–4 (78%) 14–9 (61%) 105.9 +0.84 1983 1522 107.7 — — — — — — — 41.7% -0.75 — 0–2 — +0.25
21 1991 1768 144.4 — — — — -256 +86 — 63.0% +1.03 7–6 (54%) 8–5 (62%) 100.4 +0.53 1984 1599 117.5 — — — — +21 — -14 51.2% -0.05 4–3 (57%) 2–4 (33%) 101.1 +0.63
22 1992 1647 130.7 — — — — — +96 — 57.1% +0.64 8–5 (62%) 8–6 (57%) 101.3 +3.10 1985 1676 134.2 — — — — +19 — -94 44.8% -0.26 4–0 (100%) 4–2 (67%) 107.4 -0.49
23 1993 1755 138.4 — — — — — +70 — 59.4% +0.25 7–2 (78%) 11–2 (85%) 112.7 -0.09 1986 1557 111.4 — — — — +7 -76 +56 29.4% -1.16 2–4 (33%) 2–4 (33%) 97.2 -0.12
24 — — — — — — — — — — — — — — — — 1987 1622 115.8 — — — — -40 — +10 48.6% -0.39 2–5 (29%) 9–4 (69%) 99.8 +1.50
25 — — — — — — — — — — — — — — — — 1988 1618 116.8 — — — — -94 — +56 42.1% -0.67 4–5 (44%) 4–5 (44%) 98.2 -1.49
26 1996 1650 104.7 — — — — — +48 — 13.3% -2.40 — 0–1 — -0.23 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 — 1933 147.3 — — — — -295 +91 — 61.1% +0.77 71–37 (66%) 69–41 (63%) 111.4 +2.65 — 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.