Andoni Vivanco Guzman defeated Ivan Nedelko 7-5 7-5 in the Spain F9 round of 16 on clay. The upset overturned the form book — Ivan Nedelko came in leading the head-to-head 2–0. Andoni Vivanco Guzman claimed a first win over Ivan Nedelko in three meetings, narrowing the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2012-05-14 | Spain F12 | R16 | clay | Ivan Nedelko | 6-4 6-1 |
| 2010-05-17 | Spain F17 | R32 | clay | Ivan Nedelko | 6-4 6-4 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.