Head to head
4
Hard
2
2
Clay
0
1
Grass
0
Roger Federer'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 (9)
| 2018 | Basel | Hard | QF | Roger Federer | 7-6(1) 4-6 6-4 |
| 2015 | Wimbledon | Grass | QF | Roger Federer | 6-3 7-5 6-2 |
| 2014 | Shanghai Masters | Hard | F | Roger Federer | 7-6(6) 7-6(2) |
| 2013 | Roland Garros | Clay | R16 | Roger Federer | 6-1 4-6 2-6 6-2 6-3 |
| 2013 | Rome Masters | Clay | R16 | Roger Federer | 6-1 6-2 |
| 2011 | Miami Masters | Hard | QF | Roger Federer | 3-0 RET |
| 2011 | Australian Open | Hard | R64 | Roger Federer | 6-2 6-3 4-6 4-6 6-3 |
| 2008 | Masters Cup | Hard | RR | Gilles Simon | 4-6 6-4 6-3 |
| 2008 | Canada Masters | Hard | R32 | Gilles Simon | 2-6 7-5 6-4 |
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.