Head to head
1
Hard
0
0
Clay
1
1
Grass
0
Marcos Ondruska's wins on the left · Gilbert Schaller's on the right · bar lengths share one scale
All meetings (3)
| 1996 | Davis Cup WG R1: RSA vs AUT | Grass | RR | Marcos Ondruska | 6-3 6-4 6-2 |
| 1995 | Palermo | Clay | R32 | Gilbert Schaller | 7-5 6-4 |
| 1992 | Tel Aviv | Hard | R16 | Marcos Ondruska | 6-3 6-0 |
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.