01/By surface
each with its own count, at equal weight
Hard
Never on hard
no meeting on this surface
Clay
2-0
H. leads 2-0 in 2 meetings on clay
Grass
Never on grass
no meeting on this surface
02/Every meeting
2 rows, newest first
| Date | Tournament | Surface | Round | Winner | Score, winner first | Ranks, H. first |
|---|---|---|---|---|---|---|
| Jun 1, 2017 | French OpenGrand Slam, best of 5 | clay | 2nd round | Chung H. | 6-1, 7-5, 6-1 | 67 v 80 |
| Apr 25, 2017 | Open Banco SabadellATP500 | clay | 1st round | Chung H. | 6-4, 6-4 | 94 v 73 |
A record, never a share of meetings. Main-draw singles since 2013; a meeting ended by retirement is counted with the sets that were played and marked; a walkover is listed and counted in neither column. Chung H. and Istomin D. each carry the table against every opponent faced.