H2H data updated: 2026-09-10 00:00 UTC
Gustavo Giussani holds a 1–0 lead over Guillermo Rivas in their ATP head-to-head. Across 1 main-draw meeting, Gustavo Giussani leads 1–0 on clay. Most recently, Gustavo Giussani won the 1989 St. Vincent round of 16 6-1 6-1.
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| Player | Score | Player | Match Data | Date | Round | Tournament | Category | Surface |
|---|---|---|---|---|---|---|---|---|
| Gustavo Giussani | 6-1 6-1 | Guillermo Rivas | Match data | Aug 18, 1989* | R16 | St. Vincent | 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.
| 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Guillermo Rivas | #783 | #116 | 105 | 1,507 | 10 | 27 | 27.0% | 0 | 0 | 0 | 0 | 0 | 0 |
| Gustavo Giussani | — | — | — | 1,543 | — | — | — | 0 | 0 | 0 | 0 | 0 | 0 |
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 | Guillermo Rivas | Gustavo Giussani | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Yr | W-L | Win % | Rank | Elo | GS | Titles | Yr | W-L | Win % | Rank | Elo | GS | Titles | |
| 20 | 1984 | 1–4 | 20.0% | #156 | 1,462 | 0 | 0 | — | — | — | — | — | — | — |
| 21 | 1985 | 3–8 | 27.3% | #193 | 1,453 | 0 | 0 | — | — | — | — | — | — | — |
| 22 | 1986 | 0–3 | 0.0% | #279 | 1,426 | 0 | 0 | — | — | — | — | — | — | — |
| 24 | 1988 | 0–3 | 0.0% | #185 | 1,412 | 0 | 0 | — | — | — | — | — | — | — |
| 25 | 1989 | 6–8 | 42.9% | #251 | 1,447 | 0 | 0 | — | — | — | — | — | — | — |
| 26 | 1990 | 0–1 | 0.0% | #714 | 1,439 | 0 | 0 | — | — | — | — | — | — | — |
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 | Guillermo Rivas | Gustavo Giussani | ||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Yr | Hard | Clay | Carpet | Yr | Hard | Clay | Carpet | |||||||||||||||||||
| 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 | — | — | — | — | — | — | — | — | — | — | — | — | — | 1987 | — | — | — | — | 0 | 2 | 2 | 0.0% | — | — | — | — |
| 20 | 1984 | 1 | 1 | 2 | 50.0% | 0 | 3 | 3 | 0.0% | — | — | — | — | 1988 | — | — | — | — | 1 | 3 | 4 | 25.0% | — | — | — | — |
| 21 | 1985 | 0 | 1 | 1 | 0.0% | 3 | 7 | 10 | 30.0% | — | — | — | — | 1989 | — | — | — | — | 7 | 11 | 18 | 38.9% | 0 | 1 | 1 | 0.0% |
| 22 | 1986 | — | — | — | — | 0 | 3 | 3 | 0.0% | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 24 | 1988 | 0 | 1 | 1 | 0.0% | 0 | 2 | 2 | 0.0% | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 25 | 1989 | — | — | — | — | 4 | 7 | 11 | 36.4% | 2 | 1 | 3 | 66.7% | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 26 | 1990 | 0 | 1 | 1 | 0.0% | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Career | — | 1 | 4 | 5 | 20.0% | 7 | 22 | 29 | 24.1% | 2 | 1 | 3 | 66.7% | — | — | — | — | — | 8 | 16 | 24 | 33.3% | 0 | 1 | 1 | 0.0% |
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 | Guillermo Rivas | Gustavo Giussani | ||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 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 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1987 | 1483 | 107.4 | — | — | — | — | — | — | — | 0.0% | -2.75 | — | — | — | -0.06 |
| 20 | 1984 | 1463 | 100.3 | — | — | — | — | — | +34 | — | 30.8% | -0.69 | 1–2 (33%) | 0–3 (0%) | 95.7 | +0.77 | 1988 | 1472 | 101.0 | — | — | — | — | — | +26 | — | 25.0% | -1.75 | — | 0–2 | — | +0.23 |
| 21 | 1985 | 1454 | 100.1 | — | — | — | — | — | +11 | — | 30.8% | -1.81 | 2–2 (50%) | 1–1 | — | +0.44 | 1989 | 1480 | 119.1 | — | — | — | — | — | +33 | — | 40.0% | -0.44 | 3–4 (43%) | 2–4 (33%) | 98.3 | +1.07 |
| 22 | 1986 | 1426 | 99.9 | — | — | — | — | — | +27 | — | 14.3% | -2.57 | 0–1 | 0–1 | — | +0.12 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 24 | 1988 | 1412 | 113.9 | — | — | — | — | — | — | — | 25.0% | -1.50 | 0–2 | 1–0 | — | -0.24 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 25 | 1989 | 1448 | 100.7 | — | — | — | — | +79 | -16 | — | 45.2% | -0.61 | 1–2 (33%) | 4–1 (80%) | 102.3 | +1.52 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 26 | 1990 | 1439 | 97.6 | — | — | — | — | — | — | — | 0.0% | -3.50 | — | — | — | +0.02 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Career | — | 1507 | 103.1 | — | — | — | — | +79 | +4 | — | 33.3% | -1.29 | 4–9 (31%) | 6–6 (50%) | 97.1 | +7.11 | — | 1544 | 114.6 | — | — | — | — | — | +32 | — | 35.1% | -0.79 | 3–4 (43%) | 2–6 (25%) | 96.8 | +4.96 |
Each player's five most-played main-draw opponents. The current matchup is highlighted when it appears in a player's top five.
| Opponent | W | L | M | Last Played | H2H |
|---|---|---|---|---|---|
| Francisco Maciel | 0 | 2 | 2 | Jun 19, 1986 | H2H |
| Christian Miniussi | 0 | 2 | 2 | Feb 28, 1985 | H2H |
| Horacio de la Pena | 0 | 1 | 1 | Feb 8, 1990 | H2H |
| Cristiano Caratti | 0 | 1 | 1 | Aug 24, 1989 | H2H |
| Gustavo Giussani | 0 | 1 | 1 | Aug 18, 1989 | — |
| Opponent | W | L | M | Last Played | H2H |
|---|---|---|---|---|---|
| Lawson Duncan | 2 | 1 | 3 | Aug 25, 1989 | — |
| Robbie Weiss | 0 | 1 | 1 | Nov 9, 1989 | — |
| Ricki Osterthun | 0 | 1 | 1 | Sep 28, 1989 | — |
| Juan Carlos Baguena | 0 | 1 | 1 | Sep 14, 1989 | — |
| Stefano Pescosolido | 1 | 0 | 1 | Aug 24, 1989 | — |