By surface
| Surface | Alberto Mancini | Jaime Oncins |
|---|---|---|
| Hard | 1 | 2 |
All meetings (3)
| Date | Tour | Tournament | Round | Surface | Winner | Set 1 | Set 2 | Set 3 | Set 4 | Set 5 |
|---|---|---|---|---|---|---|---|---|---|---|
| 1992-11-09 | ATP | Sao Paulo | Semifinal | Hard | Jaime Oncins | 3-6 | 3-6 | |||
| 1992-09-28 | ATP | Basel | Round of 32 | Hard | Jaime Oncins | 0-6 | 0-1 | |||
| 1988-11-21 | ATP | Itaparica | Round of 32 | Hard | Alberto Mancini | 6-1 | 6-7 | 6-0 |