Head to head
8
Clay
2
Guillermo Vilas's wins on the left · Zeljko Franulovic's on the right · bar lengths share one scale
Momentum
Running lead across all meetings, oldest to newest (walkovers excluded).
All meetings (10)
| 1982 | Kitzbuhel | Clay | R16 | Guillermo Vilas | 6-2 6-2 |
| 1977 | Kitzbuhel | Clay | SF | Guillermo Vilas | 6-2 7-5 |
| 1977 | Roland Garros | Clay | R128 | Guillermo Vilas | 6-1 6-2 6-4 |
| 1977 | Rome | Clay | R32 | Zeljko Franulovic | 7-5 6-4 |
| 1975 | Buenos Aires | Clay | QF | Guillermo Vilas | 7-5 6-3 |
| 1975 | Indianapolis | Clay | R16 | Guillermo Vilas | 6-2 6-3 |
| 1975 | Louisville | Clay | QF | Guillermo Vilas | 3-6 6-3 6-0 |
| 1975 | Hilversum | Clay | F | Guillermo Vilas | 6-4 6-7 6-2 6-3 |
| 1974 | Madrid | Clay | R64 | Guillermo Vilas | 6-1 6-2 |
| 1969 | Buenos Aires | Clay | QF | Zeljko Franulovic | 4-6 6-1 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.