Fermin Tenti defeated Juan Manuel La Serna 6-2 7-6 in the M15 Villa Maria 1 round of 32 on clay. The upset overturned the form book — Juan Manuel La Serna came in ranked #288, leading the head-to-head 4–0. Fermin Tenti claimed a first win over Juan Manuel La Serna in five meetings, narrowing the head-to-head to 4–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2025-10-22 | M15 Santiago 6 | R32 | clay | Juan Manuel La Serna | 6-4 6-3 |
| 2024-03-22 | M15 Punta del Este 2 | R16 | clay | Juan Manuel La Serna | 6-3 6-7(4) 6-4 |
| 2023-08-08 | M15 Arequipa 1 | R32 | clay | Juan Manuel La Serna | 6-4 6-4 |
| 2023-05-03 | M15 Antalya 14 | R32 | clay | Juan Manuel La Serna | 4-6 6-2 7-6(4) |
Averages over each player's completed matches in the selected window (105 vs 170). ATP, WTA & Challenger.
La Serna J.: 1 day rest · 1 match, 18 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