Head to head
1
Hard
0
2
Clay
5
Diego Perez's wins on the left · Horacio de la Pena's on the right · bar lengths share one scale
Momentum
Running lead across all meetings, oldest to newest (walkovers excluded).
All meetings (8)
| 1993 | Buenos Aires | Clay | R32 | Diego Perez | 7-6(15) 6-4 |
| 1990 | Athens | Clay | R32 | Horacio de la Pena | 6-4 6-4 |
| 1988 | Itaparica | Hard | R16 | Diego Perez | 6-7 6-2 6-0 |
| 1987 | Buenos Aires | Clay | R32 | Horacio de la Pena | 6-3 6-4 |
| 1986 | Boston | Clay | R16 | Horacio de la Pena | 6-3 6-0 |
| 1986 | Davis Cup AME QF: ARG vs URU | Clay | RR | Horacio de la Pena | 4-6 6-0 6-2 2-6 6-3 |
| 1985 | Indianapolis | Clay | R64 | Diego Perez | 6-4 4-6 6-4 |
| 1985 | Bari | Clay | R16 | Horacio de la Pena | 6-2 6-4 |
Methodology
Head-to-head totals and surface splits exclude walkovers (no match was played), which follows ATP convention — walkover meetings still appear in the match list. The momentum chart plots the running lead across all counted meetings, oldest to newest.