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

Leonardo Lavalle vs Ken Flach H2H: 0-1

Ken Flach holds a 1–0 lead over Leonardo Lavalle in their ATP head-to-head. Across 1 main-draw meeting, Ken Flach leads 1–0 on hard courts. Most recently, Ken Flach won the 1985 US Open round of 128 7-5 6-2 2-6 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.

Leonardo Lavalle
MEX Age 59 Left-Handed 188 cm / 6'2"
H2H
0 – 1
1 main draw meetings
Ken Flach
USA Right-Handed 185 cm / 6'1"

H2H Match Log

PlayerScorePlayerMatch DataDateRoundTournamentCategorySurface
Ken Flach #60 7-5 6-2 2-6 6-1 Leonardo Lavalle #212 Match data Aug 29, 1985* 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
Leonardo Lavalle #968 #51 483 1,728 64 98 39.5% 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 Leonardo Lavalle Ken Flach
YrW-LWin %RankEloGSTitles YrW-LWin %RankEloGSTitles
17 1985 4–5 44.4% #87 1,558 0 0 — — — — — — —
18 1986 10–17 37.0% #105 1,588 0 0 — — — — — — —
19 1987 2–9 18.2% #224 1,531 0 0 1982 0–1 0.0% — 1,498 0 0
20 1988 10–8 55.6% #64 1,654 0 0 1983 2–3 40.0% #314 1,521 0 0
21 1989 11–15 42.3% #132 1,649 0 0 1984 7–6 53.8% #155 1,599 0 0
22 1990 5–9 35.7% #183 1,596 0 0 1985 12–12 50.0% #60 1,676 0 0
23 1991 5–3 62.5% #133 1,658 0 1 1986 4–15 21.1% #223 1,557 0 0
24 1992 10–16 38.5% #99 1,645 0 1 1987 10–13 43.5% #100 1,621 0 0
25 1993 4–9 30.8% #309 1,596 0 1 1988 7–12 36.8% #203 1,618 0 0
26 1994 0–2 0.0% #213 1,568 0 1 1989 6–7 46.2% #194 1,651 0 0
27 1995 1–2 33.3% #362 1,565 0 1 1990 3–6 33.3% #222 1,611 0 0
28 1996 1–1 50.0% #313 1,570 0 1 1991 0–2 0.0% #572 1,575 0 0
29 1997 0–1 0.0% #439 1,561 0 1 1992 0–1 0.0% #742 1,559 0 0
30 1998 1–1 50.0% #400 1,569 0 1 — — — — — — —
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 Leonardo Lavalle 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 1985 2 2 4 50.0% 2 2 4 50.0% 0 1 1 0.0% — — — — — — — — — — — — — — — — — — — — —
18 1986 3 8 11 27.3% 4 4 8 50.0% 0 2 2 0.0% 3 3 6 50.0% — — — — — — — — — — — — — — — — —
19 1987 0 2 2 0.0% 1 3 4 25.0% 0 2 2 0.0% 1 2 3 33.3% 1982 — — — — 0 1 1 0.0% — — — — — — — —
20 1988 5 5 10 50.0% 1 2 3 33.3% — — — — 4 1 5 80.0% 1983 1 1 2 50.0% 0 1 1 0.0% 1 1 2 50.0% — — — —
21 1989 5 5 10 50.0% 5 6 11 45.5% 0 1 1 0.0% 1 3 4 25.0% 1984 3 2 5 60.0% — — — — 3 3 6 50.0% 1 1 2 50.0%
22 1990 2 3 5 40.0% 1 2 3 33.3% 0 1 1 0.0% 2 3 5 40.0% 1985 10 8 18 55.6% — — — — 1 2 3 33.3% 1 2 3 33.3%
23 1991 5 1 6 83.3% 0 1 1 0.0% — — — — 0 1 1 0.0% 1986 2 6 8 25.0% 0 3 3 0.0% 2 2 4 50.0% 0 4 4 0.0%
24 1992 6 11 17 35.3% 3 1 4 75.0% 1 3 4 25.0% 0 1 1 0.0% 1987 6 8 14 42.9% — — — — 4 4 8 50.0% 0 1 1 0.0%
25 1993 2 5 7 28.6% 2 4 6 33.3% — — — — — — — — 1988 2 6 8 25.0% 0 1 1 0.0% 3 2 5 60.0% 2 3 5 40.0%
26 1994 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 1995 0 1 1 0.0% 1 1 2 50.0% — — — — — — — — 1990 2 4 6 33.3% — — — — 1 1 2 50.0% 0 1 1 0.0%
28 1996 — — — — 1 1 2 50.0% — — — — — — — — 1991 0 1 1 0.0% — — — — — — — — 0 1 1 0.0%
29 1997 0 1 1 0.0% — — — — — — — — — — — — 1992 0 1 1 0.0% — — — — — — — — — — — —
30 1998 — — — — 1 1 2 50.0% — — — — — — — — — — — — — — — — — — — — — — — — —
31 — — — — — — — — — — — — — — — — — 1994 1 1 2 50.0% — — — — — — — — — — — —
32 — — — — — — — — — — — — — — — — — 1995 — — — — — — — — 0 1 1 0.0% — — — —
Career — 30 45 75 40.0% 22 29 51 43.1% 1 10 11 9.1% 11 14 25 44.0% — 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 45/57 of Leonardo Lavalle'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 Leonardo Lavalle 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%
23 1991 5/8 8.4 1.8 69.1% 72.3% 55.8% 68.2% 35.6% 67.3% 33.4% — —/— — — — — — — — — —
24 1992 22/26 4.2 3.3 62.6% 68.3% 49.6% 50.5% 37.5% 61.5% 35.2% — —/— — — — — — — — — —
25 1993 10/13 3.3 4.3 58.3% 63.5% 43.6% 51.7% 46.9% 54.7% 35.9% — —/— — — — — — — — — —
26 1994 2/2 2.5 2.5 68.5% 56.6% 36.0% 33.9% 49.0% 50.2% 39.1% — —/— — — — — — — — — —
27 1995 2/3 4.0 7.5 51.2% 72.1% 40.7% 43.8% 45.0% 56.9% 41.5% — —/— — — — — — — — — —
28 1996 1/2 5.0 4.0 62.5% 61.8% 30.3% 68.8% 42.9% 50.0% 41.3% 1991 2/2 7.5 1.5 65.6% 70.8% 56.1% 41.7% 16.7% 65.7% 33.4%
29 1997 1/1 7.0 5.0 59.5% 66.7% 46.9% 78.6% 60.0% 58.7% 33.7% 1992 1/1 6.0 3.0 50.8% 74.2% 40.0% 25.0% 0.0% 57.4% 32.4%
30 1998 2/2 1.5 4.0 69.1% 66.0% 50.7% 61.3% 31.0% 61.0% 41.1% — —/— — — — — — — — — —
31 — —/— — — — — — — — — — 1994 2/2 9.5 3.0 59.7% 71.7% 42.9% 70.0% 50.0% 60.3% 28.8%
32 — —/— — — — — — — — — — 1995 1/1 10.0 14.0 48.1% 75.9% 41.5% 57.1% 41.2% 58.0% 41.3%
Career — 45/162 4.3 3.6 62.3% 67.1% 47.5% 53.2% 40.6% 59.6% 36.0% — 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 Leonardo Lavalle 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 1985 1558 126.7 — — — — +14 -9 — 44.0% 0.00 2–1 (67%) 1–1 — -0.29 — — — — — — — — — — — — — — — —
18 1986 1588 127.2 — — — — 0 -11 — 37.5% -1.03 7–5 (58%) 5–2 (71%) — -1.10 — — — — — — — — — — — — — — — —
19 1987 1531 120.6 — — — — +31 +34 — 29.6% -1.04 0–3 (0%) 0–2 — -0.54 1982 1499 112.4 — — — — — — — 0.0% -4.00 — — — -0.28
20 1988 1654 137.9 — — — — +26 -94 — 41.5% -0.51 4–2 (67%) 3–3 (50%) — -0.81 1983 1522 107.7 — — — — — — — 41.7% -0.75 — 0–2 — +0.25
21 1989 1649 126.6 — — — — +31 -56 — 47.0% -0.28 3–5 (38%) 6–4 (60%) — -0.27 1984 1599 117.5 — — — — +21 — -14 51.2% -0.05 4–3 (57%) 2–4 (33%) — +0.63
22 1990 1596 107.2 — — — — +43 -11 — 42.4% -0.52 2–3 (40%) 1–4 (20%) — +0.85 1985 1676 134.2 — — — — +19 — -94 44.8% -0.26 4–0 (100%) 4–2 (67%) — -0.49
23 1991 1658 122.7 +0.15 -1.21 1.022 50.1% +34 — — 50.0% -0.05 3–0 (100%) 2–3 (40%) — -0.14 1986 1557 111.4 — — — — +7 -76 +56 29.4% -1.16 2–4 (33%) 2–4 (33%) — -0.12
24 1992 1646 122.6 -0.34 -1.80 0.915 48.1% -19 -9 -164 45.7% -0.40 2–6 (25%) 4–5 (44%) — -0.27 1987 1622 115.8 — — — — -40 — +10 48.6% -0.39 2–5 (29%) 9–4 (69%) — +1.50
25 1993 1596 111.1 -2.52 -2.49 0.792 45.9% +5 -12 — 25.8% -1.45 4–0 (100%) 1–1 — -0.61 1988 1618 116.8 — — — — -94 — +56 42.1% -0.67 4–5 (44%) 4–5 (44%) — -1.49
26 1994 1568 101.6 -2.71 -1.42 0.785 45.0% — — — 0.0% -2.50 — 0–1 — +0.04 1989 1652 118.7 — — — — -87 — +41 48.9% -0.31 3–4 (43%) 7–5 (58%) — -0.04
27 1995 1566 110.6 +3.66 +0.68 0.964 49.0% — — — 25.0% -1.75 1–0 — — -0.25 1990 1612 118.0 — — — — -53 — — 44.0% -0.40 1–4 (20%) 2–1 (67%) — -0.05
28 1996 1570 108.2 +1.19 -1.53 0.827 46.0% — — — 50.0% +0.75 — 0–1 — +0.04 1991 1576 100.1 -1.14 -2.20 0.974 48.8% — — — 20.0% -1.20 0–1 1–1 — +0.27
29 1997 1562 106.7 +1.45 -0.38 0.815 47.5% — — — 33.3% -0.33 0–1 0–1 — -0.10 1992 1559 98.8 -2.84 -0.85 0.759 44.2% — — — 0.0% -3.00 — — — +0.08
30 1998 1570 108.2 +2.32 -0.20 1.053 50.1% — — — 50.0% 0.00 — 1–1 — -0.06 — — — — — — — — — — — — — — — —
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 — 1729 132.9 -0.51 -1.65 0.890 47.8% +14 -24 -164 40.7% -0.61 28–26 (52%) 24–29 (45%) 102.3 -2.18 — 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.