Head to head
Rivalry summary
Denis Istomin and Ryan Harrison met 3 times on the ATP tour between 2010 and 2018. Ryan Harrison leads the head-to-head 2–1 against Denis Istomin. By surface, they are level 1–1 on hard.
1
Hard
1
0
Grass
1
Denis Istomin's wins on the left · Ryan Harrison's on the right · bar lengths share one scale
All meetings (3)
| 2018 | Brisbane | Hard | QF | Ryan Harrison | 7-6(6) 4-2 RET |
| 2012 | Eastbourne | Grass | QF | Ryan Harrison | 7-6(5) 6-4 |
| 2010 | San Jose | Hard | R32 | Denis Istomin | 6-2 7-5 |
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.