H2H data updated: 2026-09-08 00:00 UTC

Gustavo Guerrero vs Ricki Osterthun H2H: 1-0

Gustavo Guerrero holds a 1–0 lead over Ricki Osterthun in their ATP head-to-head. Across 1 main-draw meeting, Gustavo Guerrero leads 1–0 on clay. Most recently, Gustavo Guerrero won the 1987 Argentina Open round of 32 7-5 7-6.

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Gustavo Guerrero
ARG Left-Handed 180 cm / 5'11"
H2H
1 – 0
1 main-draw meetings
Ricki Osterthun
GER Age 62 Right-Handed 187 cm / 6'2"

H2H Match Log

PlayerScorePlayerMatch DataDateRoundTournamentCategorySurface
Gustavo Guerrero #285 7-5 7-6 Ricki Osterthun #72 Match data Nov 19, 1987* R32 Argentina Open 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
Gustavo Guerrero #1,235 #78 9 1,521 6 20 23.1% 0 0 0 0 0 0
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.

Gustavo Guerrero Ricki Osterthun
YrW-LWin %RankEloGSTitles YrW-LWin %RankEloGSTitles
1971 0–1 0.0% — 1,479 0 0 1984 2–1 66.7% #193 1,540 0 0
1979 0–1 0.0% #347 1,466 0 0 1985 7–10 41.2% #119 1,542 0 1
1980 3–4 42.9% #84 1,493 0 0 1986 15–17 46.9% #110 1,596 0 1
1981 1–9 10.0% #100 1,450 0 0 1987 19–22 46.3% #75 1,621 0 1
1983 0–1 0.0% #337 1,444 0 0 1988 12–19 38.7% #145 1,585 0 1
1984 0–1 0.0% #320 1,439 0 0 1989 4–8 33.3% #180 1,560 0 1
1985 1–1 50.0% #201 1,451 0 0 1990 1–2 33.3% #242 1,539 0 1
1986 0–1 0.0% #312 1,437 0 0 — — — — — — —
1987 1–1 50.0% #266 1,452 0 0 — — — — — — —

Surface Results by Career Season

Rows are aligned in career order because complete birth data is unavailable. 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.

Gustavo Guerrero 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 %
1971 — — — — 0 1 1 0.0% — — — — — — — — 1984 2 1 3 66.7% — — — — — — — — — — — —
1979 — — — — 0 1 1 0.0% — — — — — — — — 1985 — — — — 7 5 12 58.3% 0 5 5 0.0% — — — —
1980 — — — — 3 4 7 42.9% — — — — — — — — 1986 2 4 6 33.3% 12 11 23 52.2% 0 1 1 0.0% 1 1 2 50.0%
1981 — — — — 1 9 10 10.0% — — — — — — — — 1987 5 8 13 38.5% 13 12 25 52.0% 0 1 1 0.0% 1 1 2 50.0%
1983 — — — — 0 1 1 0.0% — — — — — — — — 1988 1 4 5 20.0% 9 10 19 47.4% 0 1 1 0.0% 2 4 6 33.3%
1984 — — — — 0 1 1 0.0% — — — — — — — — 1989 — — — — 4 7 11 36.4% — — — — 0 1 1 0.0%
1985 — — — — 1 1 2 50.0% — — — — — — — — 1990 — — — — 1 1 2 50.0% — — — — 0 1 1 0.0%
1986 — — — — 0 1 1 0.0% — — — — — — — — — — — — — — — — — — — — — — — — —
1987 — — — — 1 1 2 50.0% — — — — — — — — — — — — — — — — — — — — — — — — —
Career — — — — 6 20 26 23.1% — — — — — — — — Career 10 17 27 37.0% 46 46 92 50.0% 0 8 8 0.0% 4 8 12 33.3%

Advanced Statistics Comparison by Career Season

Rows are aligned in career order because complete birth data is unavailable. 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.

Gustavo Guerrero 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
1971 1479 94.9 — — — — — — — 0.0% -4.67 — — — +0.15 1984 1540 105.9 — — — — +38 — — 50.0% +0.25 — — — -0.02
1979 1466 95.5 — — — — — — — 0.0% -4.00 — — — +0.14 1985 1543 118.8 — — — — — +90 -86 43.5% -0.63 4–4 (50%) 3–3 (50%) 101.9 +0.90
1980 1494 114.5 — — — — — +31 — 47.1% -0.88 1–2 (33%) 2–1 (67%) 101.0 +0.54 1986 1596 125.8 — — — — -49 +66 — 47.4% -0.24 3–6 (33%) 2–6 (25%) 92.7 +1.07
1981 1450 102.4 — — — — — +10 — 15.8% -2.32 1–0 — — +0.11 1987 1621 132.1 — — — — -80 +91 — 47.6% -0.09 7–7 (50%) 5–5 (50%) 99.7 +0.65
1983 1445 98.3 — — — — — — — 0.0% -2.00 — 0–1 — -0.05 1988 1586 130.6 — — — — -75 +121 — 39.0% -0.71 8–6 (57%) 5–6 (45%) 102.6 -1.41
1984 1439 102.6 — — — — — — — 0.0% -3.33 — — — -0.09 1989 1560 117.1 — — — — — +98 — 37.9% -0.93 2–3 (40%) 2–1 (67%) — -0.37
1985 1451 102.4 — — — — — — — 40.0% -0.60 1–0 — — +0.18 1990 1540 96.9 — — — — — — — 37.5% -0.50 1–1 — — +0.36
1986 1438 98.2 — — — — — — — 33.3% -2.00 0–1 — — +0.18 — — — — — — — — — — — — — — — —
1987 1453 106.6 — — — — — — — 50.0% -0.75 — 1–0 — +0.09 — — — — — — — — — — — — — — — —
Career 1522 106.4 — — — — — +19 — 27.6% -1.85 3–3 (50%) 3–2 (60%) 103.3 +5.00 Career 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.