01/By surface
each with its own count, at equal weight
Hard
0-1
O. leads 1-0 in 1 meeting on hard
Clay
Never on clay
no meeting on this surface
Grass
Never on grass
no meeting on this surface
02/Every meeting
1 row, newest first
| Date | Tournament | Surface | Round | Winner | Score, winner first | Ranks, De Zandschulp B. first |
|---|---|---|---|---|---|---|
| Aug 23, 2023 | Winston-Salem Open at Wake Forest UniversityATP250 | hard | 2nd round | Kumar O. | 6-3, 7-5 | 55 v 385 |
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. Van De Zandschulp B. and Kumar O. each carry the table against every opponent faced.