Head to head
2
Clay
3
Lawson Duncan's wins on the left · Horacio de la Pena's on the right · bar lengths share one scale
All meetings (5)
| 1988 | Boston | Clay | SF | Lawson Duncan | 6-4 6-2 |
| 1987 | Palermo | Clay | R16 | Lawson Duncan | 6-2 6-3 |
| 1986 | Washington | Clay | R32 | Horacio de la Pena | 6-4 6-1 |
| 1985 | Marbella | Clay | F | Horacio de la Pena | 6-0 6-3 |
| 1985 | Buenos Aires | Clay | R32 | 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.