Otto Virtanen leads 2 to 0 over 2 singles meetings since 2021. Last meeting on 14/10/2026 at Roanne Challenger.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 14/10/2026 | Roanne Challenger | Round 1 | indoor hard | Virtanen | 5-7 5-7 |
| 21/08/2021 | M25 Muttenz | Semi-final | clay | Virtanen | 6-1 7-6(10) |
| indoor hard | Bertola 0 - 1 Virtanen |
| clay | Bertola 0 - 1 Virtanen |
| 2026 | Bertola 0 - 1 Virtanen |
| 2021 | Bertola 0 - 1 Virtanen |
259 wins, 166 losses since 2021 (60.9%).
Last matches: D V D D V
208 wins, 157 losses since 2021 (57.0%).
Last matches: D D V D D
Otto Virtanen leads 2 to 0 over 2 singles meetings since 2021.
On 14/10/2026, at Roanne Challenger (Round 1): Otto Virtanen won 5-7 5-7.