Head to head
2
Hard
1
0
Grass
1
Denis Istomin's wins on the left · Donald Young's on the right · bar lengths share one scale
All meetings (4)
| 2017 | Wimbledon | Grass | R128 | Donald Young | 5-7 6-4 6-4 4-2 RET |
| 2015 | Winston-Salem | Hard | R64 | Denis Istomin | 6-3 6-3 |
| 2014 | Washington | Hard | R16 | Donald Young | 6-3 3-6 6-3 |
| 2011 | Miami Masters | Hard | R128 | Denis Istomin | 6-4 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.