Federico Delbonis defeated Guillermo Bujniewicz 6-4 6-1 in the Argentina F7 round of 32 on clay. Federico Delbonis extended the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2009-05-18 | Argentina F6 | QF | clay | Guillermo Bujniewicz | 6-4 6-2 |
| 2008-07-21 | Paraguay F3 | R32 | clay | Federico Delbonis | 6-1 6-3 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.