Head to head
1
Hard
0
1
Grass
1
Jaime Fillol Sr.'s wins on the left · Joaquin Loyo-Mayo's on the right · bar lengths share one scale
All meetings (3)
| 1975 | Tucson | Hard | R64 | Jaime Fillol Sr. | 6-3 6-4 |
| 1968 | Boston-2 | Grass | R32 | Joaquin Loyo-Mayo | 6-3 4-6 8-6 6-3 |
| 1968 | Southampton | Grass | R16 | Jaime Fillol Sr. | 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.