

Facundo Mena defeated Hugo Dellien 6-3 3-6 6-2 in the Bolivia F4 round of 16 on clay. The upset overturned the form book — Hugo Dellien came in ranked #144. Facundo Mena extended the head-to-head to 4–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2014-09-08 | Ecuador F6 | R16 | clay | Hugo Dellien | 7-5 6-1 |
| 2013-06-03 | Argentina F9 | R32 | clay | Facundo Mena | 7-6(3) 6-2 |
| 2012-04-23 | Argentina F8 | R16 | clay | Facundo Mena | 4-6 6-3 6-4 |
| 2011-10-10 | Bolivia F4 | QF | clay | Facundo Mena | 6-3 6-3 |
Averages over each player's completed matches in the selected window (199 vs 200). ATP, WTA & Challenger.
Performance in the biggest moments — break points, deciding sets and tiebreaks (0–100, higher is better). About
Mena F.: 1 day rest · 1 match, 19 games (7d) · Dellien H.: 3 days rest · 5 matches, 115 games (7d). Higher means fresher. About
Each player's serve crossed against the other's return, converted to expected hold of serve. Recent completed matches, ATP, WTA & Challenger. About