Head to head
2
Hard
0
3
Clay
1
1
Carpet
0
Jaime Fillol Sr.'s wins on the left · Jairo Velasco Sr.'s on the right · bar lengths share one scale
Momentum
Running lead across all meetings, oldest to newest (walkovers excluded).
All meetings (8)
| 1983 | Rotterdam | Hard | R32 | Jaime Fillol Sr. | 6-1 7-5 |
| 1979 | Quito | Clay | R16 | Jaime Fillol Sr. | 6-3 7-5 |
| 1976 | Louisville | Clay | R64 | Jaime Fillol Sr. | 6-7 6-4 6-2 |
| 1975 | Tehran | Clay | R16 | Jairo Velasco Sr. | 6-2 6-4 |
| 1974 | London-2 | Carpet | R32 | Jaime Fillol Sr. | 6-0 5-7 6-4 |
| 1974 | Stockholm | Hard | R64 | Jaime Fillol Sr. | 6-2 3-6 6-0 |
| 1972 | Toronto-2 | Clay | QF | Jaime Fillol Sr. | 6-1 7-5 |
| 1971 | Davis Cup SAM QF: COL vs CHI | RR | Jairo Velasco Sr. | 8-6 6-2 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.