Head to head
1
Hard
0
1
Grass
1
Marcos Ondruska's wins on the left · Luis Herrera's on the right · bar lengths share one scale
All meetings (3)
| 1997 | Queen's Club | Grass | R64 | Luis Herrera | 7-6(4) 4-6 7-6(2) |
| 1993 | Queen's Club | Grass | R32 | Marcos Ondruska | 6-2 6-3 |
| 1992 | Washington | Hard | R64 | Marcos Ondruska | 7-5 6-1 |
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.