Head to head
1
Hard
1
1
Clay
0
Denis Istomin's wins on the left · Yuichi Sugita's on the right · bar lengths share one scale
All meetings (3)
| 2017 | Stockholm | Hard | R32 | Yuichi Sugita | 1-6 6-3 7-6(4) |
| 2017 | Chengdu | Hard | SF | Denis Istomin | 6-2 6-7(4) 6-0 |
| 2009 | Davis Cup G1 R3: UZB vs JPN | Clay | RR | Denis Istomin | 6-3 6-2 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.