H2H data updated: 2026-09-14 00:00 UTC
Gauthier Onclin holds a 1–0 lead over Fabian Marozsan in their ATP head-to-head. Across 1 main-draw meeting, Gauthier Onclin leads 1–0 on grass. Most recently, Gauthier Onclin won the 2026 Stuttgart Open first round 7-6(6) 6-3.
Want to explore more matchups? Advanced rivalry search lets you browse current and historical rivalries, unbeaten records, or every matchup for a player.
| Player | Score | Player | Match Data | Date | Round | Tournament | Category | Surface |
|---|---|---|---|---|---|---|---|---|
| Gauthier Onclin | 7-6(6) 6-3 | Fabian Marozsan | Match data | Jun 8, 2026 | R32 | Stuttgart Open | ATP 250 | Grass |
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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Fabian Marozsan | #60 | #36 | 1,179 | 1,867 | 78 | 80 | 49.4% | 0 | 0 | 0 | 0 | 0 | 0 |
| Gauthier Onclin | #164 | #158 | 355 | 1,573 | 1 | 2 | 33.3% | 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 | Fabian Marozsan | Gauthier Onclin | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Yr | W-L | Win % | Rank | Elo | GS | Titles | Yr | W-L | Win % | Rank | Elo | GS | Titles | |
| 23 | 2023 | 11–7 | 61.1% | #64 | 1,685 | 0 | 0 | — | — | — | — | — | — | — |
| 24 | 2024 | 23–28 | 45.1% | #58 | 1,738 | 0 | 0 | 2025 | 0–1 | 0.0% | #268 | 1,534 | 0 | 0 |
| 25 | 2025 | 25–24 | 51.0% | #54 | 1,803 | 0 | 0 | 2026 | 1–1 | 50.0% | #164 | 1,537 | 0 | 0 |
| 26 | 2026 | 19–21 | 47.5% | #60 | 1,726 | 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 | Fabian Marozsan | Gauthier Onclin | ||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Yr | Hard | Clay | Grass | Yr | Hard | Clay | Grass | |||||||||||||||||||
| W | L | M | Win % | W | L | M | Win % | W | L | M | Win % | W | L | M | Win % | W | L | M | Win % | W | L | M | Win % | |||
| 23 | 2023 | 7 | 4 | 11 | 63.6% | 4 | 2 | 6 | 66.7% | 0 | 1 | 1 | 0.0% | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 24 | 2024 | 17 | 16 | 33 | 51.5% | 5 | 8 | 13 | 38.5% | 1 | 4 | 5 | 20.0% | 2025 | 0 | 1 | 1 | 0.0% | — | — | — | — | — | — | — | — |
| 25 | 2025 | 16 | 15 | 31 | 51.6% | 7 | 6 | 13 | 53.8% | 2 | 3 | 5 | 40.0% | 2026 | — | — | — | — | — | — | — | — | 1 | 1 | 2 | 50.0% |
| 26 | 2026 | 9 | 11 | 20 | 45.0% | 5 | 6 | 11 | 45.5% | 5 | 4 | 9 | 55.6% | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Career | — | 49 | 46 | 95 | 51.6% | 21 | 22 | 43 | 48.8% | 8 | 12 | 20 | 40.0% | — | 0 | 1 | 1 | 0.0% | — | — | — | — | 1 | 1 | 2 | 50.0% |
Seasons are aligned by the age each player spent most of that calendar year. Detailed serve and return statistics available for 156/158 of Fabian Marozsan's and 3/3 of Gauthier Onclin's main draw matches. Sample is shown as matches with detailed serve and return statistics / total main draw matches. Bold green marks the stronger value when both stat samples contain at least 5 matches; lower is better for DFs/M.
| Age | Fabian Marozsan | Gauthier Onclin | ||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Yr | Sample | Aces/M | DFs/M | 1st Sv% | 1st Pts% | 2nd Pts% | BP Saved% | BP Conv% | Svc Pts% | Ret Pts% | Yr | Sample | Aces/M | DFs/M | 1st Sv% | 1st Pts% | 2nd Pts% | BP Saved% | BP Conv% | Svc Pts% | Ret Pts% | |
| 23 | 2023 | 18/18 | 4.7 | 1.9 | 65.2% | 71.3% | 51.4% | 49.2% | 39.4% | 64.5% | 38.5% | — | —/— | — | — | — | — | — | — | — | — | — |
| 24 | 2024 | 49/51 | 4.7 | 2.5 | 64.9% | 69.8% | 49.8% | 52.2% | 42.5% | 62.8% | 36.7% | 2025 | 1/1 | 2.0 | 4.0 | 69.0% | 65.0% | 53.0% | 43.0% | 23.0% | 61.0% | 38.0% |
| 25 | 2025 | 49/49 | 5.1 | 2.4 | 64.2% | 71.7% | 53.9% | 58.4% | 36.4% | 65.3% | 35.7% | 2026 | 2/2 | 2.0 | 3.5 | 59.0% | 76.5% | 45.0% | 73.5% | 50.0% | 64.0% | 35.0% |
| 26 | 2026 | 40/40 | 4.7 | 2.2 | 65.5% | 69.5% | 53.1% | 55.7% | 33.4% | 63.9% | 34.7% | — | —/— | — | — | — | — | — | — | — | — | — |
| Career | — | 156/158 | 4.8 | 2.3 | 64.9% | 70.5% | 52.1% | 54.7% | 37.9% | 64.1% | 36.1% | — | 3/3 | 2.0 | 3.7 | 62.3% | 72.7% | 47.7% | 63.3% | 41.0% | 63.0% | 36.0% |
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 | Fabian Marozsan | Gauthier Onclin | ||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 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 | |
| 20 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 2021 | 1491 | 101.8 | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 22 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 2023 | 1509 | 105.5 | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 23 | 2023 | 1686 | 132.2 | +0.92 | +1.07 | 1.083 | 51.5% | -45 | -44 | — | 56.0% | +0.46 | 5–3 (63%) | 5–5 (50%) | 104.7 | +0.40 | 2024 | 1495 | 100.5 | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 24 | 2024 | 1738 | 147.3 | -0.72 | +1.19 | 0.987 | 49.9% | +31 | -90 | -178 | 45.6% | -0.36 | 8–7 (53%) | 14–9 (61%) | 107.2 | -1.70 | 2025 | 1534 | 109.9 | -6.61 | +3.95 | 0.974 | 48.0% | — | — | — | 25.0% | -1.25 | — | 0–1 | — | -0.03 |
| 25 | 2025 | 1804 | 148.3 | +0.73 | +0.36 | 1.029 | 50.4% | -6 | -70 | -239 | 51.2% | +0.20 | 8–6 (57%) | 10–18 (36%) | 98.6 | -1.27 | 2026 | 1538 | 105.0 | -3.64 | +0.59 | 0.972 | 49.0% | — | — | — | 50.0% | -0.25 | — | 1–1 | — | -0.01 |
| 26 | 2026 | 1727 | 138.4 | -0.07 | -0.44 | 0.961 | 49.4% | +3 | -14 | -87 | 50.0% | -0.29 | 6–11 (35%) | 13–6 (68%) | 100.0 | -0.39 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Career | — | 1867 | 146.5 | +0.09 | +0.50 | 1.004 | 50.1% | +4 | -58 | -151 | 49.8% | -0.07 | 27–27 (50%) | 42–38 (53%) | 105.0 | -1.89 | — | 1573 | 108.7 | -4.63 | +1.71 | 0.973 | 48.7% | — | — | — | 37.5% | -0.75 | — | 1–2 (33%) | — | -1.33 |
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 |
|---|---|---|---|---|---|
| Miomir Kecmanovic | 4 | 1 | 5 | Aug 25, 2026 | H2H |
| Andrey Rublev | 2 | 3 | 5 | Feb 18, 2026 | H2H |
| Daniil Medvedev | 0 | 4 | 4 | Apr 25, 2026 | H2H |
| Roberto Bautista Agut | 1 | 3 | 4 | Mar 5, 2026 | H2H |
| Arthur Rinderknech | 2 | 2 | 4 | Feb 24, 2026 | H2H |
| Opponent | W | L | M | Last Played | H2H |
|---|---|---|---|---|---|
| Giovanni Mpetshi Perricard | 0 | 1 | 1 | Jun 10, 2026 | H2H |
| Fabian Marozsan | 1 | 0 | 1 | Jun 8, 2026 | H2H |
| Reilly Opelka | 0 | 1 | 1 | Jan 14, 2025 | H2H |