Irina Camelia Begu defeated Elise Mertens 3-6 6-2 6-3 in the US Open round of 128 on hard. The upset overturned the form book — Elise Mertens came in ranked #22, leading the head-to-head 3–1, defending last year's round of 16. Irina Camelia Begu narrowed the head-to-head to 3–2.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2024-05-06 | Rome | R32 | clay | Irina Camelia Begu | 6-2 6-0 |
| 2022-01-17 | Australian Open | R64 | hard | Elise Mertens | 6-3 6-2 |
| 2017-04-24 | Istanbul | SF | clay | Elise Mertens | 6-1 6-1 |
| 2017-02-11 | Fed Cup WG2 R1: ROU vs BEL | RR | hard | Elise Mertens | 3-6 7-5 7-5 |
Averages over each player's completed matches in the selected window (165 vs 200). ATP, WTA & Challenger.
Performance in the biggest moments — break points, deciding sets and tiebreaks (0–100, higher is better). About
Mertens E.: 6 days rest · 1 match, 24 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