

Gael Monfils defeated Alexander Zverev 6-4 6-0 in the Washington semi-final on hard. The upset overturned the form book — Alexander Zverev came in ranked #2, defending last year's quarter-final. Gael Monfils extended the head-to-head to 3–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2021-10-04 | Indian Wells Masters | R16 | hard | Alexander Zverev | 6-1 6-3 |
| 2016-02-08 | Rotterdam | QF | hard | Gael Monfils | 7-6(4) 6-3 |
| 2015-02-16 | Marseille | R32 | hard | Gael Monfils | 6-1 7-6(12) |
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 (199 vs 199). ATP, WTA & Challenger.
Performance in the biggest moments — break points, deciding sets and tiebreaks (0–100, higher is better). About
Zverev A.: 1 day rest · 4 matches, 148 games (7d). Higher means fresher. About