01/By surface
each with its own count, at equal weight
Hard
2-0
R. leads 2-0 in 2 meetings on hard
Clay
Never on clay
no meeting on this surface
Grass
1-0
R. leads 1-0 in 1 meeting on grass
02/Every meeting
3 rows, newest first
| Date | Tournament | Surface | Round | Winner | Score, winner first | Ranks, R. first |
|---|---|---|---|---|---|---|
| Jun 20, 2015 | Gerry Weber OpenATP500 | grass | semifinal | Federer R. | 7-6, 7-6 | 2 v 27 |
| Oct 25, 2014 | Swiss IndoorsATP500 | hard | semifinal | Federer R. | 7-6, 3-6, 6-3 | 2 v 31 |
| Mar 21, 2014 | Sony Ericsson OpenMasters 1000 | hard | 2nd round | Federer R. | 6-4, 7-6 | 5 v 53 |
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. Federer R. and Karlovic I. each carry the table against every opponent faced.