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

Karol Kucera vs Doug Flach H2H: 0-1

Doug Flach holds a 1–0 lead over Karol Kucera in their ATP head-to-head. Across 1 main-draw meeting, Doug Flach leads 1–0 on grass. Most recently, Doug Flach won the 1998 Queen's Club Championships round of 32 5-7 6-4 6-3.

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

Karol Kucera
SVK Age 52 Right-Handed 188 cm / 6'2"
H2H
0 – 1
1 main draw meetings
Doug Flach
USA Age 56 Right-Handed 183 cm / 6'0"

H2H Match Log

PlayerScorePlayerMatch DataDateRoundTournamentCategorySurface
Doug Flach #222 5-7 6-4 6-3 Karol Kucera #12 Match data Jun 11, 1998* R32 Queen's Club Championships ATP World Series → modern equivalent ATP 250 Grass

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
Karol Kucera #1,540 #6 2,732 1,995 261 233 52.8% 0 0 0 1 5 6
Doug Flach #788 #108 415 1,628 28 46 37.8% 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 Karol Kucera Doug Flach
YrW-LWin %RankEloGSTitles YrW-LWin %RankEloGSTitles
17 1991 1–1 50.0% #352 1,509 0 0 1988 1–1 50.0% #577 1,517 0 0
18 1992 0–1 0.0% #210 1,506 0 0 — — — — — — —
19 1993 1–3 25.0% #159 1,493 0 0 — — — — — — —
20 1994 13–13 50.0% #54 1,617 0 0 — — — — — — —
21 1995 21–27 43.8% #79 1,624 0 1 — — — — — — —
22 1996 18–25 41.9% #63 1,657 0 1 1993 6–8 42.9% #123 1,569 0 0
23 1997 33–27 55.0% #24 1,832 0 2 1994 4–17 19.0% #215 1,473 0 0
24 1998 48–27 64.0% #8 1,845 0 4 1995 0–1 0.0% #648 1,462 0 0
25 1999 38–20 65.5% #17 1,852 0 5 1996 3–2 60.0% #146 1,539 0 0
26 2000 23–22 51.1% #73 1,767 0 5 1997 11–14 44.0% #174 1,572 0 0
27 2001 11–13 45.8% #101 1,722 0 5 1998 3–3 50.0% #215 1,609 0 0
28 2002 18–16 52.9% #83 1,756 0 5 — — — — — — —
29 2003 24–18 57.1% #40 1,763 0 6 — — — — — — —
30 2004 9–15 37.5% #91 1,668 0 6 — — — — — — —
31 2005 3–5 37.5% #310 1,665 0 6 — — — — — — —

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 Karol Kucera Doug 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 1991 — — — — 1 1 2 50.0% — — — — — — — — 1988 1 1 2 50.0% — — — — — — — — — — — —
18 1992 — — — — 0 1 1 0.0% — — — — — — — — — — — — — — — — — — — — — — — — —
19 1993 — — — — 1 2 3 33.3% — — — — 0 1 1 0.0% — — — — — — — — — — — — — — — — —
20 1994 1 2 3 33.3% 10 8 18 55.6% 0 1 1 0.0% 2 2 4 50.0% — — — — — — — — — — — — — — — — —
21 1995 3 8 11 27.3% 5 12 17 29.4% 6 2 8 75.0% 7 5 12 58.3% — — — — — — — — — — — — — — — — —
22 1996 11 12 23 47.8% 2 6 8 25.0% 2 2 4 50.0% 3 5 8 37.5% 1993 6 6 12 50.0% — — — — — — — — 0 2 2 0.0%
23 1997 6 8 14 42.9% 9 10 19 47.4% 4 2 6 66.7% 14 7 21 66.7% 1994 3 8 11 27.3% 0 5 5 0.0% 0 3 3 0.0% 1 1 2 50.0%
24 1998 26 12 38 68.4% 12 8 20 60.0% 2 3 5 40.0% 8 4 12 66.7% 1995 — — — — — — — — 0 1 1 0.0% — — — —
25 1999 16 9 25 64.0% 5 5 10 50.0% 8 3 11 72.7% 9 3 12 75.0% 1996 1 1 2 50.0% — — — — 2 1 3 66.7% — — — —
26 2000 11 13 24 45.8% 7 5 12 58.3% 3 2 5 60.0% 2 2 4 50.0% 1997 5 8 13 38.5% 1 2 3 33.3% 3 3 6 50.0% 2 1 3 66.7%
27 2001 6 5 11 54.5% 3 5 8 37.5% 1 1 2 50.0% 1 2 3 33.3% 1998 0 1 1 0.0% 0 1 1 0.0% 3 1 4 75.0% — — — —
28 2002 15 10 25 60.0% 1 5 6 16.7% 2 1 3 66.7% — — — — — — — — — — — — — — — — — — — — —
29 2003 19 9 28 67.9% 0 5 5 0.0% 4 2 6 66.7% 1 2 3 33.3% — — — — — — — — — — — — — — — — —
30 2004 4 8 12 33.3% 1 3 4 25.0% 2 3 5 40.0% 2 1 3 66.7% — — — — — — — — — — — — — — — — —
31 2005 1 2 3 33.3% — — — — 2 3 5 40.0% — — — — — — — — — — — — — — — — — — — — —
Career — 119 98 217 54.8% 57 76 133 42.9% 36 25 61 59.0% 49 34 83 59.0% — 16 25 41 39.0% 1 8 9 11.1% 8 9 17 47.1% 3 4 7 42.9%

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 438/494 of Karol Kucera's and 65/72 of Doug 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 Karol Kucera Doug 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%
17 1991 1/2 4.0 2.0 36.5% 69.6% 65.0% 85.7% 66.7% 66.7% 45.1% — —/— — — — — — — — — —
18 1992 1/1 3.0 4.0 43.3% 73.1% 41.2% 42.9% 33.3% 55.0% 36.7% — —/— — — — — — — — — —
19 1993 4/4 4.0 3.5 46.2% 72.2% 48.1% 52.7% 42.3% 59.9% 33.5% — —/— — — — — — — — — —
20 1994 24/26 3.7 4.2 53.8% 67.6% 46.5% 50.8% 47.3% 57.9% 41.2% — —/— — — — — — — — — —
21 1995 41/48 5.1 5.3 52.7% 68.2% 46.6% 57.7% 40.4% 58.2% 40.2% — —/— — — — — — — — — —
22 1996 35/43 4.0 5.2 55.6% 68.2% 47.1% 55.0% 42.6% 58.7% 39.9% 1993 13/14 3.5 3.1 56.1% 68.3% 47.6% 46.4% 43.7% 59.0% 37.9%
23 1997 53/60 3.8 5.3 55.2% 69.6% 47.6% 49.2% 46.5% 60.0% 40.5% 1994 19/21 2.5 3.5 58.4% 63.4% 45.0% 59.5% 34.9% 55.7% 34.3%
24 1998 63/75 5.8 5.0 56.4% 72.6% 49.9% 61.2% 49.8% 62.8% 43.3% 1995 1/1 3.0 6.0 61.9% 65.0% 35.1% 62.5% 20.0% 53.6% 34.3%
25 1999 53/58 5.1 3.9 57.9% 72.9% 51.3% 53.7% 49.6% 63.8% 43.3% 1996 2/5 12.0 6.0 58.7% 67.1% 45.6% 43.2% 30.5% 58.4% 38.2%
26 2000 38/45 6.4 5.4 52.1% 73.9% 48.1% 58.4% 42.2% 61.5% 41.1% 1997 24/25 3.1 4.0 56.6% 65.8% 46.4% 52.8% 45.5% 57.4% 38.8%
27 2001 23/24 4.9 5.0 55.4% 70.4% 45.3% 42.0% 42.3% 59.0% 40.2% 1998 6/6 1.0 2.3 58.1% 60.6% 48.3% 41.0% 57.5% 55.2% 39.8%
28 2002 31/34 5.1 5.5 58.8% 68.5% 45.8% 47.5% 52.6% 58.2% 39.6% — —/— — — — — — — — — —
29 2003 40/42 5.4 4.4 57.3% 71.1% 48.7% 55.8% 46.1% 61.7% 40.0% — —/— — — — — — — — — —
30 2004 23/24 5.8 4.4 61.2% 70.9% 49.4% 52.3% 49.4% 62.6% 38.4% — —/— — — — — — — — — —
31 2005 8/8 6.0 4.8 56.5% 62.9% 51.9% 60.7% 57.6% 57.9% 34.1% — —/— — — — — — — — — —
Career — 438/494 5.1 4.9 55.8% 70.5% 48.3% 54.2% 46.6% 60.7% 40.8% — 65/74 3.1 3.6 57.3% 65.2% 46.2% 52.2% 42.3% 57.0% 37.3%

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 Karol Kucera Doug 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 1991 1510 99.2 -0.34 -0.73 1.352 55.2% — — — 50.0% -1.50 — — — +0.11 1988 1517 110.2 — — — — — — — 40.0% -0.20 1–0 — — +0.02
18 1992 1506 107.8 +1.94 +0.49 0.815 45.8% — — — 0.0% -3.00 — 0–1 — -0.21 — — — — — — — — — — — — — — — —
19 1993 1493 107.7 -0.38 -0.91 0.835 47.3% — +43 — 30.0% -1.30 0–1 — — +0.01 — — — — — — — — — — — — — — — —
20 1994 1617 124.2 -2.17 +1.05 0.978 49.4% -93 +34 — 45.2% -0.31 5–2 (71%) 2–4 (33%) — +0.29 — — — — — — — — — — — — — — — —
21 1995 1625 128.1 -3.11 +1.46 0.961 49.3% -21 -56 +36 46.1% -0.47 8–9 (47%) 9–6 (60%) — +1.18 — — — — — — — — — — — — — — — —
22 1996 1657 140.0 -1.67 +1.61 0.965 49.3% -9 -82 +62 43.1% -0.04 8–2 (80%) 5–14 (26%) — -0.90 1993 1569 129.0 -1.64 +0.52 0.925 48.4% +24 — — 42.9% -0.14 2–2 (50%) 2–4 (33%) — +0.16
23 1997 1832 145.3 -1.29 +2.80 1.013 50.0% -21 -141 -84 49.6% +0.04 11–9 (55%) 6–4 (60%) — -1.69 1994 1473 119.8 -4.15 -1.48 0.776 45.4% +91 +7 +73 25.0% -1.71 0–4 (0%) 5–4 (56%) — -0.42
24 1998 1846 161.4 +0.91 +5.75 1.163 53.0% +34 -55 -157 59.8% +0.70 16–13 (55%) 15–13 (54%) — -2.10 1995 1462 99.6 -2.17 -0.92 0.740 43.9% — — — 33.3% -2.33 0–1 1–0 — +0.05
25 1999 1853 152.3 +1.99 +5.08 1.196 53.0% +24 -89 -80 64.6% +1.00 7–9 (44%) 13–8 (62%) — -0.21 1996 1540 108.3 +1.07 +1.46 0.919 48.0% — — +74 50.0% -0.83 — 4–0 (100%) — +0.18
26 2000 1767 147.6 -0.07 +3.71 1.065 51.2% -8 +56 +26 51.3% +0.32 6–6 (50%) 5–9 (36%) — -2.34 1997 1573 119.7 -3.04 +0.18 0.912 48.2% +20 -88 +66 46.9% -0.72 3–6 (33%) 7–3 (70%) — +1.00
27 2001 1723 133.9 -1.96 +1.87 0.979 49.4% +28 +25 — 45.3% -0.11 2–3 (40%) 4–7 (36%) — -1.09 1998 1610 108.9 -2.52 +0.84 0.890 47.6% — — +73 42.9% -0.29 2–0 1–2 (33%) — -0.45
28 2002 1756 129.2 -2.48 +2.17 0.948 48.8% +31 -87 -5 48.3% -0.36 10–3 (77%) 7–5 (58%) — -1.25 — — — — — — — — — — — — — — — —
29 2003 1763 141.0 -0.44 +2.57 1.044 50.7% +37 -184 +57 57.8% +0.34 5–5 (50%) 15–10 (60%) — -0.62 — — — — — — — — — — — — — — — —
30 2004 1668 134.1 -0.65 +2.30 1.027 50.5% +66 -105 +102 43.1% -0.25 4–3 (57%) 6–8 (43%) — -1.86 — — — — — — — — — — — — — — — —
31 2005 1665 103.1 -1.58 -1.94 0.810 46.0% +47 — +72 42.1% -0.84 — 2–1 (67%) — -0.40 — — — — — — — — — — — — — — — —
Career — 1996 149.0 -0.72 +2.99 1.038 50.6% +12 -50 -5 51.8% +0.15 82–65 (56%) 89–90 (50%) 102.0 -2.25 — 1629 125.3 -2.90 -0.15 0.868 47.3% +43 -29 +71 40.1% -0.86 8–13 (38%) 20–13 (61%) 102.9 +0.73

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.