Guillermo Rivera Aranguiz defeated Gerald Melzer 6-4 7-6 in the Chile F1 qualifying round on clay. The upset overturned the form book — Gerald Melzer came in leading the head-to-head 1–0. Guillermo Rivera Aranguiz claimed a first win over Gerald Melzer in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2012-02-20 | Chile F3 | F | clay | Gerald Melzer | 7-6(4) 6-3 |
Averages over each player's completed matches in the selected window (35 vs 200). 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