Head to head
1
Hard
1
0
Clay
2
Di Wu's wins on the left · Denis Istomin's on the right · bar lengths share one scale
All meetings (4)
| 2016 | Davis Cup G1 R2: CHN vs UZB | Clay | RR | Denis Istomin | 6-4 6-4 6-2 |
| 2014 | Davis Cup G1 R2: CHN vs UZB | Hard | RR | Di Wu | 1-6 7-5 6-3 7-5 |
| 2013 | Davis Cup G1 R1: UZB vs CHN | Clay | RR | Denis Istomin | 4-6 4-6 7-6(4) 7-5 6-2 |
| 2010 | Davis Cup G1 R1: CHN vs UZB | Hard | RR | Denis Istomin | 2-6 6-3 7-5 6-4 |
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.