Head to head
2
Hard
0
1
Clay
0
1
Grass
0
1
Carpet
0
Pete Sampras's wins on the left · Daniel Vacek's on the right · bar lengths share one scale
All meetings (5)
| 1995 | Hamburg Masters | Clay | R16 | Pete Sampras | 6-2 3-6 6-2 |
| 1994 | Stockholm Masters | Carpet | R32 | Pete Sampras | 7-6(6) 6-1 |
| 1994 | US Open | Hard | R64 | Pete Sampras | 6-3 6-4 6-4 |
| 1994 | Wimbledon | Grass | R16 | Pete Sampras | 6-4 6-1 7-6(5) |
| 1993 | US Open | Hard | R64 | Pete Sampras | 6-4 5-7 6-2 7-6(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.