Head to head
1
Clay
2
Lawson Duncan's wins on the left · Gustavo Giussani's on the right · bar lengths share one scale
All meetings (3)
| 1989 | San Marino | Clay | R16 | Lawson Duncan | 7-6 6-7 6-3 |
| 1989 | St. Vincent | Clay | R32 | Gustavo Giussani | 6-3 6-0 |
| 1989 | Prague | Clay | R32 | Gustavo Giussani | 5-7 6-0 7-5 |
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.