Head to head
2
Hard
5
0
Clay
1
Daniel Vacek's wins on the left · Marcelo Rios's on the right · bar lengths share one scale
Momentum
Running lead across all meetings, oldest to newest (walkovers excluded).
All meetings (8)
| 2001 | Hong Kong | Hard | R32 | Marcelo Rios | 6-2 6-1 |
| 2000 | Indian Wells Masters | Hard | R64 | Marcelo Rios | 7-6(5) 6-1 |
| 1998 | US Open | Hard | R128 | Marcelo Rios | 6-4 6-2 6-3 |
| 1998 | Cincinnati Masters | Hard | R32 | Daniel Vacek | 6-3 6-2 |
| 1996 | Canada Masters | Hard | R16 | Marcelo Rios | 6-4 6-3 |
| 1996 | New Haven | Hard | R16 | Daniel Vacek | 6-1 6-1 |
| 1996 | Rome Masters | Clay | R32 | Marcelo Rios | 6-3 6-3 |
| 1995 | Long Island | Hard | R32 | Marcelo Rios | 7-5 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.