Head to head
6
Hard
0
1
Clay
0
1
Grass
0
Roger Federer's wins on the left · Denis Istomin's on the right · bar lengths share one scale
Momentum
Running lead across all meetings, oldest to newest (walkovers excluded).
All meetings (8)
| 2021 | Roland Garros | Clay | R128 | Roger Federer | 6-2 6-4 6-3 |
| 2019 | Australian Open | Hard | R128 | Roger Federer | 6-3 6-4 6-4 |
| 2014 | Basel | Hard | R16 | Roger Federer | 3-6 6-3 6-4 |
| 2013 | Basel | Hard | R16 | Roger Federer | 4-6 6-3 6-2 |
| 2013 | Indian Wells Masters | Hard | R64 | Roger Federer | 6-2 6-3 |
| 2012 | London Olympics | Grass | R16 | Roger Federer | 7-5 6-3 |
| 2010 | Cincinnati Masters | Hard | R32 | Roger Federer | 5-2 RET |
| 2006 | Australian Open | Hard | R128 | Roger Federer | 6-2 6-3 6-2 |
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.