01/By surface
each with its own count, at equal weight
Hard
3-0
R. leads 3-0 in 3 meetings on hard
Clay
1-0
R. leads 1-0 in 1 meeting on clay
Grass
Never on grass
no meeting on this surface
02/Every meeting
4 rows, newest first
| Date | Tournament | Surface | Round | Winner | Score, winner first | Ranks, R. first |
|---|---|---|---|---|---|---|
| Mar 8, 2019 | BNP Paribas OpenMasters 1000 | hard | 1st round | Haase R. | 7-6, 6-1 | 68 v 101 |
| Feb 28, 2017 | Dubai Tennis ChampionshipsATP500 | hard | 1st round | Haase R. | 6-2, 6-4 | 66 v 68 |
| Apr 25, 2014 | BRD Nastase Tiriac TrophyATP250 | clay | quarterfinal | Haase R. | 3-6, 6-1, 6-3 | 50 v 53 |
| Oct 28, 2013 | BNP Paribas MastersMasters 1000 | hard | 1st round | Haase R. | 7-6, 6-3 | 49 v 45 |
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. Haase R. and Istomin D. each carry the table against every opponent faced.