01/By surface
each with its own count, at equal weight
Hard
Never on hard
no meeting on this surface
Clay
0-1
J. leads 1-0 in 1 meeting on clay
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, B. first |
|---|---|---|---|---|---|---|
| Apr 9, 2013 | U.S. Men's Clay Court ChampionshipsATP250 | clay | 1st round | Sock J. | 7-6, 6-3 | 189 v 119 |
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. Klahn B. and Sock J. each carry the table against every opponent faced.