Head to head
0
Hard
1
1
Clay
0
Lawson Duncan's wins on the left · Roberto Arguello's on the right · bar lengths share one scale
All meetings (2)
| 1988 | Guaruja | Hard | R16 | Roberto Arguello | 6-2 6-4 |
| 1985 | Washington | Clay | R64 | Lawson Duncan | 6-1 6-2 |
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.