Head to head
2
Clay
2
1
Carpet
4
Jaime Fillol Sr.'s wins on the left · Ilie Nastase's on the right · bar lengths share one scale
Momentum
Running lead across all meetings, oldest to newest (walkovers excluded).
All meetings (9)
| 1978 | Houston WCT | Clay | QF | Ilie Nastase | 6-4 6-2 |
| 1976 | Houston WCT | Clay | R16 | Ilie Nastase | 6-2 7-6 |
| 1976 | Toronto WCT | Carpet | R16 | Ilie Nastase | 6-4 6-4 |
| 1975 | Barcelona-3 | Clay | QF | Jaime Fillol Sr. | 6-1 2-6 9-7 |
| 1972 | Seattle | Carpet | SF | Ilie Nastase | 7-6 6-7 6-4 |
| 1972 | Washington-1 | Carpet | R16 | Ilie Nastase | 7-6 6-4 |
| 1971 | Macon | Carpet | SF | Ilie Nastase | 4-6 6-2 6-0 |
| 1970 | Indianapolis | Clay | R16 | Jaime Fillol Sr. | 6-3 6-4 |
| 1970 | Macon | Carpet | R16 | Jaime Fillol Sr. | 6-4 4-6 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.