Diego Alvarez defeated Marko Tkalec 3-6 6-3 7-6 in the Italy F26 round of 32 on clay. Diego Alvarez extended the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2007-06-04 | Slovenia F2 | SF | clay | Marko Tkalec | 6-3 6-4 |
| 2004-04-26 | Italy F5 | R16 | clay | Diego Alvarez | 7-5 2-6 6-3 |