Matteo Viola defeated Kresimir Ritz 4-6 6-2 6-4 in the Croatia F2 round of 32 on clay. The upset overturned the form book — Kresimir Ritz came in leading the head-to-head 1–0, but Matteo Viola had been the form player, winning 2 of their last 7 on clay. Matteo Viola claimed a first win over Kresimir Ritz in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2006-05-29 | Bosnia & Herzegovina F3 | R32 | clay | Kresimir Ritz | 4-6 6-4 6-2 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.