
Marcos Giron defeated Felix Auger Aliassime 6-1 6-4 in the Tokyo quarter-final on hard. The upset overturned the form book — Felix Auger Aliassime came in ranked #4, leading the head-to-head 5–0. Marcos Giron claimed a first win over Felix Auger Aliassime in six meetings, narrowing the head-to-head to 5–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2025-01-06 | Adelaide | QF | hard | Felix Auger Aliassime | 7-6 6-3 |
| 2024-07-29 | Paris Olympics | R64 | clay | Felix Auger Aliassime | 6-1 6-4 |
| 2022-06-13 | Halle | R32 | grass | Felix Auger Aliassime | 6-3 5-7 6-3 |
| 2022-05-09 | Rome Masters | R16 | clay | Felix Auger Aliassime | 6-3 6-2 |
| 2021-06-14 | Halle | QF | grass | Felix Auger Aliassime | 6-3 6-2 |
Averages over each player's completed matches in the selected window (199 vs 199). ATP, WTA & Challenger.
Performance in the biggest moments — break points, deciding sets and tiebreaks (0–100, higher is better). About
Giron M.: 7 days rest · 1 match, 23 games (7d) · Auger Aliassime F.: 1 day rest · 2 matches, 40 games (7d). Higher means fresher. About
Each player's serve crossed against the other's return, converted to expected hold of serve. Recent completed matches, ATP, WTA & Challenger. About
Per-surface Serve / Return Rating (0–100, percentile within the hard field, opponent-adjusted over 52 weeks). About