

Gael Monfils defeated Marin Cilic 6-3 7-6 in the Rio de Janeiro round of 16 on clay. The upset overturned the form book — Marin Cilic came in ranked #88. Gael Monfils extended the head-to-head to 4–0.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2019-02-25 | Dubai | R32 | hard | Gael Monfils | 6-3 4-6 6-0 |
| 2016-08-08 | Rio Olympics | R16 | hard | Gael Monfils | 6-7(6) 6-3 6-4 |
| 2009-11-08 | Paris Masters | QF | hard | Gael Monfils | 3-6 6-4 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
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