Nikola Cacic defeated Ljubomir Celebic 7-5 6-1 in the Portoroz CH qualifying round 1 on hard. The upset overturned the form book — Ljubomir Celebic came in leading the head-to-head 1–0, defending last year's round of 32. Nikola Cacic claimed a first win over Ljubomir Celebic in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2013-08-26 | Serbia F11 | R32 | clay | Ljubomir Celebic | 4-6 7-6(4) 7-6(8) |
Averages over each player's completed matches in the selected window (35 vs 45). ATP, WTA & Challenger.
Each player's serve crossed against the other's return, converted to expected hold of serve. Recent completed matches, ATP, WTA & Challenger. About