

Zizou Bergs defeated Stan Wawrinka 6-3 6-7 6-3 in the United Cup semi-final on hard. The result followed the form book — Zizou Bergs came in ranked #37. Zizou Bergs claimed a first win over Stan Wawrinka in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2023-02-20 | Marseille | R32 | hard | Stan Wawrinka | 6-4 6-7(6) 6-4 |
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
Averages over each player's completed matches in the selected window (24 vs 18). ATP, WTA & Challenger.
Performance in the biggest moments — break points, deciding sets and tiebreaks (0–100, higher is better). About
The Umpiry Score combines match-context factors — matchup, form, fatigue, travel and motivation — into a single 0–10 score, updated daily. Read how it works.
Bergs Z.: 8 days rest · 4 matches (14d) · Wawrinka S.: 12 days rest · 1 match (14d). Higher means fresher. About