Head to head
0
Hard
5
1
Clay
4
2
Carpet
1
Jaime Fillol Sr.'s wins on the left · Arthur Ashe's on the right · bar lengths share one scale
Momentum
Running lead across all meetings, oldest to newest (walkovers excluded).
All meetings (13)
| 1976 | London | Carpet | QF | Jaime Fillol Sr. | 6-4 3-6 6-3 |
| 1975 | Nations Cup | Carpet | RR | Arthur Ashe | 6-2 6-2 |
| 1975 | Boston | Clay | R16 | Arthur Ashe | 6-4 6-2 |
| 1975 | Indianapolis | Clay | QF | Arthur Ashe | 7-6 6-3 |
| 1975 | Philadelphia WCT | Carpet | QF | Jaime Fillol Sr. | 7-6(6) 2-6 7-6(6) |
| 1974 | Los Angeles | Hard | R16 | Arthur Ashe | 6-2 6-4 |
| 1974 | Louisville | Clay | QF | Jaime Fillol Sr. | 6-4 2-6 7-6 |
| 1974 | Washington-2 | Clay | R16 | Arthur Ashe | 7-6 6-2 |
| 1973 | Las Vegas | Hard | QF | Arthur Ashe | 7-6 6-3 |
| 1971 | Berkeley WCT | Hard | R16 | Arthur Ashe | 6-4 3-6 6-2 |
| 1970 | Washington | Clay | R16 | Arthur Ashe | 6-2 6-2 |
| 1969 | Berkeley | Hard | QF | Arthur Ashe | 7-5 6-2 |
| 1969 | San Juan | Hard | SF | Arthur Ashe | 6-4 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.