Head to head
0
Hard
1
2
Clay
2
0
Grass
2
Philipp Kohlschreiber'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 (7)
| 2018 | Kitzbuhel | Clay | R16 | Denis Istomin | 5-7 6-3 6-1 |
| 2018 | Stuttgart | Grass | R32 | Denis Istomin | 7-6(2) 7-6(3) |
| 2014 | Roland Garros | Clay | R64 | Philipp Kohlschreiber | 6-3 7-6(5) 6-2 |
| 2014 | Dusseldorf | Clay | SF | Philipp Kohlschreiber | 6-2 4-6 6-4 |
| 2014 | Munich | Clay | R32 | Denis Istomin | 7-5 2-6 6-4 |
| 2011 | Wimbledon | Grass | R128 | Denis Istomin | 4-6 6-3 6-3 6-3 |
| 2010 | San Jose | Hard | QF | Denis Istomin | 6-1 1-6 6-3 |
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.