Head to head
3
Hard
1
3
Clay
1
4
Grass
1
2
Carpet
0
Stan Smith'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 (15)
| 1977 | Nottingham | Grass | SF | Jaime Fillol Sr. | 9-8 4-6 6-3 |
| 1975 | Boston | Clay | R32 | Jaime Fillol Sr. | 6-4 7-6 |
| 1975 | Nottingham | Grass | R64 | Stan Smith | 6-2 7-5 |
| 1974 | US Open | Grass | R128 | Stan Smith | 3-6 6-3 5-7 7-5 7-6 |
| 1974 | Nottingham | Grass | R16 | Stan Smith | 6-1 6-4 |
| 1974 | Orlando WCT | Hard | SF | Jaime Fillol Sr. | 6-4 3-6 6-4 |
| 1974 | Tucson | Hard | R16 | Stan Smith | 7-6 6-2 |
| 1973 | Paris | Hard | R16 | Stan Smith | 6-2 6-7 6-2 |
| 1973 | Munich WCT | Carpet | R16 | Stan Smith | 6-4 6-4 |
| 1972 | Salisbury | Carpet | QF | Stan Smith | 6-4 7-6 |
| 1970 | Indianapolis | Clay | QF | Stan Smith | 6-2 3-6 6-3 |
| 1970 | Wimbledon | Grass | R128 | Stan Smith | 7-5 2-6 6-3 6-4 |
| 1969 | Los Angeles-2 | Hard | R32 | Stan Smith | 9-7 6-4 |
| 1969 | Indianapolis | Clay | R16 | Stan Smith | 6-4 6-4 |
| 1969 | Cincinnati | Clay | R16 | Stan Smith | 6-4 0-6 7-5 |
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.