Guillermo Garcia Lopez defeated Viktor Troicki 6-1 6-7 7-5 in the Zagreb quarter-final on hard. The upset overturned the form book — Viktor Troicki came in leading the head-to-head 5–1. Guillermo Garcia Lopez narrowed the head-to-head to 5–2.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2018-09-24 | Shenzhen | R32 | hard | Viktor Troicki | 5-3 RET |
| 2017-02-27 | Dubai | R32 | hard | Guillermo Garcia Lopez | 6-4 6-3 |
| 2012-03-21 | Miami Masters | R64 | hard | Viktor Troicki | 4-6 6-1 6-4 |
| 2010-10-04 | Tokyo | QF | hard | Viktor Troicki | 6-2 3-6 6-4 |
| 2010-06-07 | Halle | R32 | grass | Viktor Troicki | 6-1 7-6(4) |
| 2009-07-19 | Hamburg | R16 | clay | Viktor Troicki | 6-7(2) 6-4 7-6(6) |
Each player's serve crossed against the other's return, converted to expected hold of serve. Recent completed matches, ATP, WTA & Challenger. About
Averages over each player's completed matches in the selected window (200 vs 200). ATP, WTA & Challenger.
Performance in the biggest moments — break points, deciding sets and tiebreaks (0–100, higher is better). About