Head to head
3
Hard
4
0
Clay
2
0
Grass
1
Gael Monfils's wins on the left · Gilles Simon's on the right · bar lengths share one scale
Momentum
Running lead across all meetings, oldest to newest (walkovers excluded).
All meetings (10)
| 2020 | Rotterdam | Hard | R16 | Gael Monfils | 6-4 6-1 |
| 2017 | Madrid Masters | Clay | R64 | Gilles Simon | 0-6 6-0 7-6(0) |
| 2016 | Tokyo | Hard | R16 | Gael Monfils | 6-1 6-4 |
| 2015 | Wimbledon | Grass | R32 | Gilles Simon | 3-6 6-3 7-6(6) 2-6 6-2 |
| 2015 | Marseille | Hard | F | Gilles Simon | 6-4 1-6 7-6(4) |
| 2013 | Australian Open | Hard | R32 | Gilles Simon | 6-4 6-4 4-6 1-6 8-6 |
| 2012 | Bangkok | Hard | QF | Gilles Simon | 6-4 6-1 |
| 2012 | Montpellier | Hard | SF | Gael Monfils | 4-6 7-6(4) 6-4 |
| 2011 | Hamburg | Clay | QF | Gilles Simon | 6-4 3-6 6-0 |
| 2009 | Australian Open | Hard | R16 | Gilles Simon | 6-4 2-6 6-1 RET |
Methodology
Head-to-head totals and surface splits exclude walkovers (no match was played), which follows ATP convention — walkover meetings still appear in the match list. The momentum chart plots the running lead across all counted meetings, oldest to newest.