
John Isner defeated Gael Monfils 6-4 6-7 6-3 in the Beijing round of 32 on hard. The upset overturned the form book — Gael Monfils came in leading the head-to-head 7–5, defending last year's round of 32. John Isner narrowed the head-to-head to 7–6.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2021-08-09 | Canada Masters | QF | hard | John Isner | 7-6(5) 6-4 |
| 2018-10-22 | Vienna | R16 | hard | Gael Monfils | 6-4 6-4 |
| 2018-03-05 | Indian Wells Masters | R64 | hard | Gael Monfils | 6-7(5) 7-6(3) 7-5 |
| 2017-03-06 | Indian Wells Masters | R32 | hard | Gael Monfils | 6-2 6-4 |
| 2014-10-27 | Paris Masters | R32 | hard | Gael Monfils | 6-4 7-6(4) |
| 2013-08-26 | US Open | R64 | hard | John Isner | 7-5 6-2 4-6 7-6(4) |
| 2011-07-31 | Washington | SF | hard | Gael Monfils | 6-4 3-6 7-6(6) |
| 2010-10-25 | Montpellier | QF | hard | Gael Monfils | 3-6 6-4 6-4 |
| 2010-01-18 | Australian Open | R32 | hard | John Isner | 6-1 4-6 7-6(4) 7-6(5) |
| 2009-03-12 | Indian Wells Masters | R64 | hard | John Isner | 6-7(5) 6-1 6-4 |
| 2008-03-27 | Miami Masters | R128 | hard | Gael Monfils | 6-7(8) 6-3 6-3 |
| 2007-07-29 | Washington | SF | hard | John Isner | 6-7(4) 7-6(1) 7-6(2) |
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 (164 vs 199). ATP, WTA & Challenger.
Performance in the biggest moments — break points, deciding sets and tiebreaks (0–100, higher is better). About