Head to head
1
Hard
0
0
Carpet
1
Jaime Fillol Sr.'s wins on the left · Russell Simpson's on the right · bar lengths share one scale
All meetings (2)
| 1979 | Tulsa | Hard | R32 | Jaime Fillol Sr. | 6-4 6-3 |
| 1979 | Richmond WCT | Carpet | R32 | Russell Simpson | 6-1 6-3 |
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.