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

Ricki Osterthun vs Blaine Willenborg H2H: 1-0

Ricki Osterthun holds a 1–0 lead over Blaine Willenborg in their ATP head-to-head. Across 1 main-draw meeting, Ricki Osterthun leads 1–0 on clay. Most recently, Ricki Osterthun won the 1986 Bologna round of 32 3-6 6-3 7-5.

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Ricki Osterthun
GER Age 62 Right-Handed 187 cm / 6'2"
H2H
1 – 0
1 main draw meetings
Blaine Willenborg
USA Age 66 Right-Handed 170 cm / 5'7"

H2H Match Log

PlayerScorePlayerMatch DataDateRoundTournamentCategorySurface
Ricki Osterthun #80 3-6 6-3 7-5 Blaine Willenborg #175 Match data Jun 12, 1986* R32 Bologna 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
Ricki Osterthun #1,123 #58 182 1,696 60 79 43.2% 0 0 0 0 1 1
Blaine Willenborg #1,067 #50 0 1,624 33 54 37.9% 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 Ricki Osterthun Blaine Willenborg
YrW-LWin %RankEloGSTitles YrW-LWin %RankEloGSTitles
19 — — — — — — — 1979 0–1 0.0% #579 1,488 0 0
20 1984 2–1 66.7% #193 1,540 0 0 1980 3–5 37.5% #283 1,514 0 0
21 1985 7–10 41.2% #119 1,542 0 1 — — — — — — —
22 1986 15–17 46.9% #110 1,596 0 1 — — — — — — —
23 1987 19–22 46.3% #75 1,621 0 1 1983 1–3 25.0% — 1,524 0 0
24 1988 12–19 38.7% #145 1,585 0 1 1984 6–10 37.5% #79 1,533 0 0
25 1989 4–8 33.3% #180 1,560 0 1 1985 8–12 40.0% #188 1,578 0 0
26 1990 1–2 33.3% #242 1,539 0 1 1986 5–9 35.7% #160 1,535 0 0
27 — — — — — — — 1987 10–11 47.6% #145 1,588 0 0
28 — — — — — — — 1988 0–3 0.0% #731 1,547 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 Ricki Osterthun Blaine Willenborg
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 %
19 — — — — — — — — — — — — — — — — — 1979 — — — — 0 1 1 0.0% — — — — — — — —
20 1984 2 1 3 66.7% — — — — — — — — — — — — 1980 1 2 3 33.3% 2 3 5 40.0% — — — — — — — —
21 1985 — — — — 7 5 12 58.3% 0 5 5 0.0% — — — — — — — — — — — — — — — — — — — — —
22 1986 2 4 6 33.3% 12 11 23 52.2% 0 1 1 0.0% 1 1 2 50.0% — — — — — — — — — — — — — — — — —
23 1987 5 8 13 38.5% 13 12 25 52.0% 0 1 1 0.0% 1 1 2 50.0% 1983 1 2 3 33.3% 0 1 1 0.0% — — — — — — — —
24 1988 1 4 5 20.0% 9 10 19 47.4% 0 1 1 0.0% 2 4 6 33.3% 1984 0 2 2 0.0% 6 7 13 46.2% 0 1 1 0.0% — — — —
25 1989 — — — — 4 7 11 36.4% — — — — 0 1 1 0.0% 1985 1 2 3 33.3% 7 10 17 41.2% — — — — — — — —
26 1990 — — — — 1 1 2 50.0% — — — — 0 1 1 0.0% 1986 1 1 2 50.0% 4 7 11 36.4% — — — — 0 1 1 0.0%
27 — — — — — — — — — — — — — — — — — 1987 4 5 9 44.4% 4 5 9 44.4% — — — — 2 1 3 66.7%
28 — — — — — — — — — — — — — — — — — 1988 0 1 1 0.0% 0 1 1 0.0% — — — — 0 1 1 0.0%
Career — 10 17 27 37.0% 46 46 92 50.0% 0 8 8 0.0% 4 8 12 33.3% — 8 15 23 34.8% 23 35 58 39.7% 0 1 1 0.0% 2 3 5 40.0%

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 Ricki Osterthun Blaine Willenborg
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
19 — — — — — — — — — — — — — — — — 1979 1488 100.7 — — — — — — — 33.3% -1.00 0–1 — — +0.07
20 1984 1540 105.9 — — — — +38 — — 50.0% +0.25 — — — -0.02 1980 1514 103.6 — — — — +42 +1 — 33.3% -0.95 2–0 0–1 — +0.52
21 1985 1543 118.8 — — — — — +90 -86 43.5% -0.63 4–4 (50%) 3–3 (50%) — +0.90 — — — — — — — — — — — — — — — —
22 1986 1596 125.8 — — — — -49 +66 — 47.4% -0.24 3–6 (33%) 2–6 (25%) — +1.07 — — — — — — — — — — — — — — — —
23 1987 1621 132.1 — — — — -80 +91 — 47.6% -0.09 7–7 (50%) 5–5 (50%) — +0.65 1983 1524 117.1 — — — — +36 — — 25.0% -0.75 — 1–3 (25%) — -0.68
24 1988 1586 130.6 — — — — -75 +121 — 39.0% -0.71 8–6 (57%) 5–6 (45%) — -1.41 1984 1533 127.2 — — — — — +52 — 39.0% -0.66 3–4 (43%) 3–1 (75%) — -0.13
25 1989 1560 117.1 — — — — — +98 — 37.9% -0.93 2–3 (40%) 2–1 (67%) — -0.37 1985 1578 123.2 — — — — -54 +29 — 43.1% -0.71 3–5 (38%) 6–4 (60%) — +0.25
26 1990 1540 96.9 — — — — — — — 37.5% -0.50 1–1 — — +0.36 1986 1535 110.9 — — — — -23 +43 — 41.7% -0.70 2–4 (33%) 4–3 (57%) — +1.19
27 — — — — — — — — — — — — — — — — 1987 1588 119.3 — — — — -22 -7 — 44.0% -0.44 5–2 (71%) 3–3 (50%) — +0.52
28 — — — — — — — — — — — — — — — — 1988 1548 103.4 — — — — — — — 25.0% -1.63 0–2 0–1 — +0.09
Career — 1697 130.8 — — — — -62 +92 -86 44.0% -0.41 25–27 (48%) 17–21 (45%) 97.2 +0.85 — 1624 124.4 — — — — -11 +29 — 39.9% -0.70 15–18 (45%) 17–16 (52%) 103.3 +2.10

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.