By surface
| Surface | Sjeng Schalken | Marcos Ondruska |
|---|---|---|
| Grass | 0 | 1 |
All meetings (1)
| Date | Tour | Tournament | Round | Surface | Winner | Set 1 | Set 2 | Set 3 | Set 4 | Set 5 |
|---|---|---|---|---|---|---|---|---|---|---|
| 1997-06-23 | ATP | Wimbledon | Round of 128 | Grass | Marcos Ondruska | 6-3 | 5-7 | 0-6 | 1-0 |
| Surface | Sjeng Schalken | Marcos Ondruska |
|---|---|---|
| Grass | 0 | 1 |
| Date | Tour | Tournament | Round | Surface | Winner | Set 1 | Set 2 | Set 3 | Set 4 | Set 5 |
|---|---|---|---|---|---|---|---|---|---|---|
| 1997-06-23 | ATP | Wimbledon | Round of 128 | Grass | Marcos Ondruska | 6-3 | 5-7 | 0-6 | 1-0 |