01/By surface
each with its own count, at equal weight
Hard
1-0
J.L. leads 1-0 in 1 meeting on hard
Clay
Never on clay
no meeting on this surface
Grass
1-0
J.L. leads 1-0 in 1 meeting on grass
02/Every meeting
2 rows, newest first
| Date | Tournament | Surface | Round | Winner | Score, winner first | Ranks, J.L. first |
|---|---|---|---|---|---|---|
| Aug 12, 2019 | Western & Southern Financial Group MastersMasters 1000 | hard | 1st round | Struff J.L. | 7-5, 7-6 | 36 v 80 |
| Jul 4, 2018 | WimbledonGrand Slam, best of 5 | grass | 2nd round | Struff J.L. | 6-7, 3-6, 7-6, 7-6, 13-11 | 64 v 112 |
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. Struff J.L. and Karlovic I. each carry the table against every opponent faced.