Munich 
Oeiras 
Abidjan 1 
Davis Сup Group I Tennis. Played Virtanen Otto. Season 2025
Country 
Finland. Ranking ATP 135.
Finland. Ranking ATP 135. Madrid | ||||
|---|---|---|---|---|
| 07.04.2025 | First round | Holmgren August — Virtanen Otto | 2:1 (6:3, 6:7, 7:6) |
|
 ATP - Grand Prix Hassan II | ||||
| 02.04.2025 | Second round | Carballes Baena Roberto — Virtanen Otto | 2:0 (6:4, 6:4) |
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| 01.04.2025 | First round | Altmaier Daniel — Virtanen Otto | 1:2 (2:6, 6:4, 6:7) |
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 ATP - NASDAQ-100 | ||||
| 17.03.2025 | Qualifications - 1st round | Blockx Alexander — Virtanen Otto | 2:1 (3:6, 6:4, 6:3) |
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 Cap Cana | ||||
| 13.03.2025 | First round | McCabe James — Virtanen Otto | 2:0 (7:6, 6:0) |
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 ATP - The Dubai Tennis Championships | ||||
| 23.02.2025 | Qialification final | Safiullin Roman — Virtanen Otto | 2:0 (6:3, 7:6) |
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| 22.02.2025 | Qualifications - 1st round | Virtanen Otto — Kukushkin Mikhail | 2:0 (6:1, 7:5) |
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 ATP - Qatar ExxonMobil Open | ||||
| 18.02.2025 | First round | Virtanen Otto — Borges Nuno | 0:2 (6:7, 3:6) |
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| 16.02.2025 | Qialification final | Van De Zandschulp Botic — Virtanen Otto | 2:0 (6:1, 6:4) |
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| 15.02.2025 | Qualifications - 1st round | Atmane Terence — Virtanen Otto | 0:2 (4:6, 5:7) |
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 ATP - Open 13 | ||||
| 12.02.2025 | Second round | Altmaier Daniel — Virtanen Otto | 2:0 (6:4, 6:3) |
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| 10.02.2025 | First round | Virtanen Otto — Korda Sebastian | 2:1 (6:7, 7:6, 6:4) |
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| Quimper | ||||
| 22.01.2025 | First round | Virtanen Otto — Sachko Vitaliy | 1:2 (1:6, 6:3, 3:6) |
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