H2H data updated: 2026-09-07 00:00 UTC

Claudio Mezzadri vs Ricki Osterthun H2H: 3-0

Claudio Mezzadri holds a 3–0 lead over Ricki Osterthun in their ATP head-to-head. Across 3 main-draw meetings, Claudio Mezzadri leads 2–0 on clay and 1–0 on hard courts. Most recently, Claudio Mezzadri won the 1988 Hamburg Open round of 16 3-6 6-1 6-4.

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Claudio Mezzadri
SUI Age 61 Right-Handed 180 cm / 5'11"
H2H
3 – 0
3 main-draw meetings
Ricki Osterthun
GER Age 62 Right-Handed 187 cm / 6'2"

H2H Match Log

PlayerScorePlayerMatch DataDateRoundTournamentCategorySurface
Claudio Mezzadri #30 3-6 6-1 6-4 Ricki Osterthun #77 Match data Apr 29, 1988* R16 Hamburg Open ATP 250 Clay
Claudio Mezzadri #31 6-1 7-5 Ricki Osterthun #58 Match data Oct 22, 1987* R32 Vienna Open ATP 250 Hard
Claudio Mezzadri #126 6-3 6-2 Ricki Osterthun #124 Match data Aug 6, 1986* R64 Austrian Open Kitzbühel ATP 250 Clay

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
Claudio Mezzadri #1,238 #26 539 1,801 105 131 44.5% 0 0 0 0 1 1
Ricki Osterthun #1,123 #58 182 1,696 60 79 43.2% 0 0 0 0 1 1

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 Claudio Mezzadri Ricki Osterthun
YrW-LWin %RankEloGSTitles YrW-LWin %RankEloGSTitles
18 1983 1–3 25.0% #831 1,482 0 0 — — — — — — —
19 1984 7–11 38.9% #151 1,515 0 0 — — — — — — —
20 1985 5–8 38.5% #135 1,520 0 0 1984 2–1 66.7% #193 1,540 0 0
21 1986 12–16 42.9% #138 1,587 0 0 1985 7–10 41.2% #119 1,542 0 1
22 1987 25–16 61.0% #28 1,772 0 1 1986 15–17 46.9% #110 1,596 0 1
23 1988 13–15 46.4% #105 1,660 0 1 1987 19–22 46.3% #75 1,621 0 1
24 1989 10–14 41.7% #230 1,581 0 1 1988 12–19 38.7% #145 1,585 0 1
25 1990 2–3 40.0% #305 1,585 0 1 1989 4–8 33.3% #180 1,560 0 1
26 1991 5–7 41.7% #127 1,590 0 1 1990 1–2 33.3% #242 1,539 0 1
27 1992 13–16 44.8% #97 1,596 0 1 — — — — — — —
28 1993 12–22 35.3% #134 1,518 0 1 — — — — — — —

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 Claudio Mezzadri Ricki Osterthun
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 1983 1 1 2 50.0% 0 2 2 0.0% — — — — — — — — — — — — — — — — — — — — — — — — —
19 1984 0 1 1 0.0% 7 9 16 43.8% 0 1 1 0.0% — — — — — — — — — — — — — — — — — — — — —
20 1985 — — — — 5 8 13 38.5% — — — — — — — — 1984 2 1 3 66.7% — — — — — — — — — — — —
21 1986 1 3 4 25.0% 10 12 22 45.5% 1 1 2 50.0% — — — — 1985 — — — — 7 5 12 58.3% 0 5 5 0.0% — — — —
22 1987 6 4 10 60.0% 17 8 25 68.0% — — — — 2 4 6 33.3% 1986 2 4 6 33.3% 12 11 23 52.2% 0 1 1 0.0% 1 1 2 50.0%
23 1988 2 4 6 33.3% 9 9 18 50.0% — — — — 2 2 4 50.0% 1987 5 8 13 38.5% 13 12 25 52.0% 0 1 1 0.0% 1 1 2 50.0%
24 1989 2 3 5 40.0% 7 9 16 43.8% — — — — 1 2 3 33.3% 1988 1 4 5 20.0% 9 10 19 47.4% 0 1 1 0.0% 2 4 6 33.3%
25 1990 — — — — 2 3 5 40.0% — — — — — — — — 1989 — — — — 4 7 11 36.4% — — — — 0 1 1 0.0%
26 1991 0 1 1 0.0% 5 5 10 50.0% — — — — 0 1 1 0.0% 1990 — — — — 1 1 2 50.0% — — — — 0 1 1 0.0%
27 1992 2 2 4 50.0% 10 11 21 47.6% 0 1 1 0.0% 1 2 3 33.3% — — — — — — — — — — — — — — — — —
28 1993 3 7 10 30.0% 9 13 22 40.9% — — — — 0 2 2 0.0% — — — — — — — — — — — — — — — — —
Career — 17 26 43 39.5% 81 89 170 47.6% 1 3 4 25.0% 6 13 19 31.6% — 10 17 27 37.0% 46 46 92 50.0% 0 8 8 0.0% 4 8 12 33.3%

Advanced Statistics Comparison by Age

Seasons are aligned by the age each player spent most of that calendar year. Metrics use eligible main-draw results; point statistics use matches with detailed data. 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 Claudio Mezzadri Ricki Osterthun
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 1983 1482 97.2 — — — — — — — 30.0% -1.60 1–1 0–1 — +0.56 — — — — — — — — — — — — — — — —
19 1984 1515 117.4 — — — — — +48 — 44.2% -0.44 2–3 (40%) 2–1 (67%) 101.1 +1.04 — — — — — — — — — — — — — — — —
20 1985 1521 116.6 — — — — — +25 — 40.0% -1.03 2–2 (50%) 2–1 (67%) — +0.64 1984 1540 105.9 — — — — +38 — — 50.0% +0.25 — — — -0.02
21 1986 1587 129.9 — — — — -71 +21 — 47.1% -0.04 2–6 (25%) 2–3 (40%) 96.0 +0.87 1985 1543 118.8 — — — — — +90 -86 43.5% -0.63 4–4 (50%) 3–3 (50%) 101.9 +0.90
22 1987 1773 147.0 — — — — -147 +24 — 59.6% +0.78 9–6 (60%) 10–5 (67%) 108.3 -0.33 1986 1596 125.8 — — — — -49 +66 — 47.4% -0.24 3–6 (33%) 2–6 (25%) 92.7 +1.07
23 1988 1661 126.8 — — — — -73 +75 — 44.9% -0.16 5–2 (71%) 2–4 (33%) 102.3 -0.30 1987 1621 132.1 — — — — -80 +91 — 47.6% -0.09 7–7 (50%) 5–5 (50%) 99.7 +0.65
24 1989 1581 122.3 — — — — -12 +75 — 46.6% -0.19 1–5 (17%) 5–2 (71%) 97.5 +1.51 1988 1586 130.6 — — — — -75 +121 — 39.0% -0.71 8–6 (57%) 5–6 (45%) 102.6 -1.41
25 1990 1585 114.2 — — — — — +81 — 45.5% -0.09 2–1 (67%) 0–3 (0%) 99.1 -0.20 1989 1560 117.1 — — — — — +98 — 37.9% -0.93 2–3 (40%) 2–1 (67%) — -0.37
26 1991 1590 126.5 -1.74 +1.94 0.981 49.4% — +105 — 50.0% -0.43 0–4 (0%) 3–1 (75%) 98.0 +0.10 1990 1540 96.9 — — — — — — — 37.5% -0.50 1–1 — — +0.36
27 1992 1596 123.3 +0.13 -1.64 0.931 48.8% -27 +52 — 45.5% -0.26 7–8 (47%) 4–5 (44%) 97.7 +0.10 — — — — — — — — — — — — — — — —
28 1993 1519 120.8 -1.90 -1.17 0.947 48.7% -25 +105 — 38.5% -0.68 5–6 (45%) 4–6 (40%) 98.5 +1.06 — — — — — — — — — — — — — — — —
Career — 1801 134.2 -1.11 -0.88 0.947 48.8% -69 +57 — 46.7% -0.18 36–44 (45%) 34–32 (52%) 99.6 +2.16 — 1697 130.8 — — — — -62 +92 -86 44.0% -0.41 25–27 (48%) 17–21 (45%) 97.2 +0.85

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.