Joao Souza defeated Daniel Koellerer 7-5 6-4 in the Colombia F2 quarter-final on clay. Joao Souza extended the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2008-01-21 | Colombia F1 | QF | clay | Joao Souza | 7-6(8) 7-6(6) |
| 2006-02-18 | Costa Do Sauipe | Q32 | hard | Daniel Koellerer | 6-4 6-2 |
Averages over each player's completed matches in the selected window (200 vs 43). 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