H2H data updated: 2026-09-03 00:00 UTC

Lars Koslowski vs Eduardo Masso H2H: 0-1

Eduardo Masso holds a 1–0 lead over Lars Koslowski in their ATP head-to-head. Across 1 main-draw meeting, Eduardo Masso leads 1–0 on carpet. Most recently, Eduardo Masso won the 1992 Copenhagen round of 32 6-3 6-3.

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Lars Koslowski
GER Age 55 Right-Handed 188 cm / 6'2"
H2H
0 – 1
1 main draw meetings
Eduardo Masso
BEL Age 62 Left-Handed 177 cm / 5'10"

H2H Match Log

PlayerScorePlayerMatch DataDateRoundTournamentCategorySurface
Eduardo Masso #93 6-3 6-3 Lars Koslowski #68 Match data Mar 5, 1992* R32 Copenhagen 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
Lars Koslowski #1,378 #63 576 1,658 17 28 37.8% 0 0 0 0 0 0
Eduardo Masso #1,177 #56 568 1,685 41 69 37.3% 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 Lars Koslowski Eduardo Masso
YrW-LWin %RankEloGSTitles YrW-LWin %RankEloGSTitles
18 1989 1–1 50.0% #520 1,512 0 0 — — — — — — —
20 1991 4–2 66.7% #89 1,590 0 0 — — — — — — —
21 1992 10–20 33.3% #116 1,520 0 0 — — — — — — —
22 1993 2–5 28.6% #252 1,511 0 0 1986 0–4 0.0% #208 1,457 0 0
23 — — — — — — — 1987 1–2 33.3% #185 1,472 0 0
24 — — — — — — — 1988 13–14 48.1% #87 1,602 0 0
25 — — — — — — — 1989 4–10 28.6% #305 1,566 0 0
26 — — — — — — — 1990 5–6 45.5% #125 1,593 0 0
27 — — — — — — — 1991 15–19 44.1% #99 1,619 0 0
28 — — — — — — — 1992 3–14 17.6% #219 1,519 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 Lars Koslowski Eduardo Masso
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 %
18 1989 — — — — 1 1 2 50.0% — — — — — — — — — — — — — — — — — — — — — — — — —
20 1991 — — — — 4 1 5 80.0% — — — — 0 1 1 0.0% — — — — — — — — — — — — — — — — —
21 1992 7 6 13 53.8% 3 11 14 21.4% 0 1 1 0.0% 0 2 2 0.0% — — — — — — — — — — — — — — — — —
22 1993 2 3 5 40.0% 0 2 2 0.0% — — — — — — — — 1986 — — — — 0 3 3 0.0% — — — — 0 1 1 0.0%
23 — — — — — — — — — — — — — — — — — 1987 1 1 2 50.0% — — — — — — — — 0 1 1 0.0%
24 — — — — — — — — — — — — — — — — — 1988 3 5 8 37.5% 4 4 8 50.0% 2 2 4 50.0% 4 3 7 57.1%
25 — — — — — — — — — — — — — — — — — 1989 3 3 6 50.0% 0 3 3 0.0% — — — — 1 4 5 20.0%
26 — — — — — — — — — — — — — — — — — 1990 — — — — 4 4 8 50.0% — — — — 1 2 3 33.3%
27 — — — — — — — — — — — — — — — — — 1991 4 8 12 33.3% 10 8 18 55.6% 0 1 1 0.0% 1 2 3 33.3%
28 — — — — — — — — — — — — — — — — — 1992 — — — — 0 10 10 0.0% 1 1 2 50.0% 2 3 5 40.0%
Career — 9 9 18 50.0% 8 15 23 34.8% 0 1 1 0.0% 0 3 3 0.0% — 11 17 28 39.3% 18 32 50 36.0% 3 4 7 42.9% 9 16 25 36.0%

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 Lars Koslowski Eduardo Masso
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
18 1989 1512 104.3 — — — — — — — 40.0% +0.20 1–0 — — -0.08 — — — — — — — — — — — — — — — —
20 1991 1590 126.9 +0.99 +1.88 1.031 50.4% — +70 — 66.7% +0.13 1–2 (33%) 4–0 (100%) — -0.17 — — — — — — — — — — — — — — — —
21 1992 1521 111.0 -5.44 -1.07 0.828 46.1% +38 +28 — 33.3% -1.25 2–3 (40%) 4–5 (44%) — +1.25 — — — — — — — — — — — — — — — —
22 1993 1512 97.2 -4.03 -2.60 0.715 43.1% +47 — — 26.3% -2.21 2–0 2–0 — +0.32 1986 1458 101.2 — — — — — +37 — 11.1% -2.67 0–1 0–1 — +0.24
23 — — — — — — — — — — — — — — — — 1987 1472 114.7 — — — — +65 — — 28.6% -1.29 1–0 0–1 — -0.13
24 — — — — — — — — — — — — — — — — 1988 1603 127.2 — — — — -10 -71 -28 44.1% -0.81 7–5 (58%) 6–4 (60%) — -0.57
25 — — — — — — — — — — — — — — — — 1989 1567 106.0 — — — — -3 -69 — 31.4% -1.89 2–2 (50%) 4–1 (80%) — +0.01
26 — — — — — — — — — — — — — — — — 1990 1594 127.8 — — — — -26 -11 — 48.0% -0.32 2–1 (67%) 2–1 (67%) — -0.54
27 — — — — — — — — — — — — — — — — 1991 1619 127.8 -3.84 +1.27 0.882 47.4% -71 +55 — 41.3% -0.61 5–5 (50%) 3–7 (30%) — -0.97
28 — — — — — — — — — — — — — — — — 1992 1519 114.2 -3.66 -0.40 0.858 46.8% +31 +9 — 27.3% -1.34 1–3 (25%) 1–8 (11%) — +0.07
Career — 1659 113.6 -4.30 -0.96 0.829 46.1% +40 +39 — 37.0% -1.16 6–5 (55%) 10–5 (67%) 108.1 +2.93 — 1685 127.2 -3.77 +0.66 0.873 47.2% -19 +7 -28 37.7% -1.01 18–17 (51%) 16–23 (41%) 101.4 -1.73

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.