By surface
| Surface | Carlos Costa | Oliver Gross |
|---|---|---|
| Clay | 3 | 1 |
All meetings (4)
| Date | Tour | Tournament | Round | Surface | Winner | Set 1 | Set 2 | Set 3 | Set 4 | Set 5 |
|---|---|---|---|---|---|---|---|---|---|---|
| 1998-06-08 | ATP | Bologna | Round of 16 | Clay | Carlos Costa | 6-2 | 6-2 | |||
| 1997-05-05 | ATP | Hamburg Masters | Round of 32 | Clay | Oliver Gross | 3-6 | 1-6 | |||
| 1995-04-10 | ATP | Barcelona | Round of 16 | Clay | Carlos Costa | 6-3 | 7-62 | |||
| 1994-08-08 | ATP | San Marino | Final | Clay | Carlos Costa | 6-1 | 6-3 |