Head to head
0
Hard
1
1
Clay
6
Belus Prajoux's wins on the left · Jaime Fillol Sr.'s on the right · bar lengths share one scale
Momentum
Running lead across all meetings, oldest to newest (walkovers excluded).
All meetings (8)
| 1981 | Florence | Clay | R32 | Belus Prajoux | 6-4 1-6 6-4 |
| 1981 | Vina del Mar | Clay | R16 | Jaime Fillol Sr. | 6-3 6-7 6-1 |
| 1978 | Madrid | Clay | R64 | Jaime Fillol Sr. | 7-6 6-3 |
| 1978 | Toronto | Clay | R64 | Jaime Fillol Sr. | 6-1 6-3 |
| 1977 | Santiago | Clay | QF | Jaime Fillol Sr. | 3-6 6-2 6-4 |
| 1977 | Basel | Hard | R32 | Jaime Fillol Sr. | 6-3 6-0 |
| 1977 | Hamburg | Clay | R16 | Jaime Fillol Sr. | 6-2 6-3 |
| 1976 | Buenos Aires | Clay | R16 | Jaime Fillol Sr. | 6-3 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.