By surface
| Surface | Olli Rahnasto | Owen Casey |
|---|---|---|
| Hard | 1 | 0 |
All meetings (1)
| Date | Tour | Tournament | Round | Surface | Winner | Set 1 | Set 2 | Set 3 | Set 4 | Set 5 |
|---|---|---|---|---|---|---|---|---|---|---|
| 1989-02-03 | ATP | Davis Cup G1 QF: IRL vs FIN | Round Robin | Hard | Olli Rahnasto | 7-5 | 6-1 | 6-4 |
| Surface | Olli Rahnasto | Owen Casey |
|---|---|---|
| Hard | 1 | 0 |
| Date | Tour | Tournament | Round | Surface | Winner | Set 1 | Set 2 | Set 3 | Set 4 | Set 5 |
|---|---|---|---|---|---|---|---|---|---|---|
| 1989-02-03 | ATP | Davis Cup G1 QF: IRL vs FIN | Round Robin | Hard | Olli Rahnasto | 7-5 | 6-1 | 6-4 |