01/By surface
each with its own count, at equal weight
Hard
Never on hard
no meeting on this surface
Clay
1-0
J.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, J.J. first |
|---|---|---|---|---|---|---|
| Apr 8, 2023 | U.S. Men's Clay Court ChampionshipsATP250 | clay | 2nd round | Wolf J.J. | 6-4, 6-1 | 54 v 137 |
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. Wolf J.J. and Kudla D. each carry the table against every opponent faced.