Juan Sebastian Cabal defeated Carlos Avellan 7-5 7-6 in the Colombia F4 semi-final on clay. The upset overturned the form book — Carlos Avellan came in leading the head-to-head 2–0. Juan Sebastian Cabal claimed a first win over Carlos Avellan in three meetings, narrowing the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2006-06-05 | Brazil F4 | R16 | clay | Carlos Avellan | 6-3 6-4 |
| 2004-08-30 | Ecuador F1 | R32 | clay | Carlos Avellan | 6-4 6-1 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.