Munich 
Bucharest 
Oeiras 
San Miguel de Tucuman 
Acapulco Tennis. Played Virtanen Otto. Season 2024
Country 
Finland. Ranking ATP 161.
Finland. Ranking ATP 161. Gwangju Challenger | ||||
|---|---|---|---|---|
| 16.04.2024 | First round | Nam Ji Sung — Virtanen Otto | 2:0 (6:4, 6:3) |
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| Busan Challenger | ||||
| 09.04.2024 | First round | Chan Hong Seong — Virtanen Otto | 2:0 (6:2, 6:2) |
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 ATP - NASDAQ-100 | ||||
| 19.03.2024 | Qialification final | Bautista Agut Roberto — Virtanen Otto | 2:1 (6:4, 4:6, 6:4) |
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| 18.03.2024 | Qualifications - 1st round | Rodionov Jurij — Virtanen Otto | 1:2 (7:6, 6:7, 2:6) |
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 Lugano | ||||
| 10.03.2024 | Final | Masur Daniel — Virtanen Otto | 1:2 (7:6, 4:6, 6:7) |
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| 09.03.2024 | Semi-finals | Molleker Rudolf — Virtanen Otto | 0:2 (1:6, 3:6) |
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| 08.03.2024 | Quarter-finals | Herbert Pierre-Hugues — Virtanen Otto | 0:2 (3:6, 2:6) |
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| 07.03.2024 | Second round | Ilkel Cem — Virtanen Otto | 0:2 (2:6, 1:6) |
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| 05.03.2024 | First round | Bertola Remy — Virtanen Otto | 0:2 (5:7, 3:6) |
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 Lille | ||||
| 02.03.2024 | Semi-finals | Rinderknech Arthur — Virtanen Otto | 2:1 (6:4, 4:6, 6:2) |
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| 01.03.2024 | Quarter-finals | Virtanen Otto — Barrere Gregoire | 2:0 (6:2, 6:2) |
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| 29.02.2024 | Second round | Blockx Alexander — Virtanen Otto | 0:2 (1:6, 4:6) |
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| 28.02.2024 | First round | Virtanen Otto — Otte Oscar | 2:1 (6:4, 3:6, 6:1) |
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| Pau | ||||
| 25.02.2024 | Final | Riedi Leandro — Virtanen Otto | 0:2 (5:7, 5:7) |
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| 24.02.2024 | Semi-finals | Nakashima Brandon — Virtanen Otto | 0:2 (4:6, 6:7) |
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| 23.02.2024 | Quarter-finals | Virtanen Otto — Pouille Lucas | 2:0 (7:6, 7:6) |
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| 22.02.2024 | Second round | Paire Benoit — Virtanen Otto | 0:2 (0:6, 6:7) |
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| 20.02.2024 | First round | Lamasine Tristan — Virtanen Otto | 0:2 (5:7, 6:7) |
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 Manama | ||||
| 13.02.2024 | First round | Andreev Adrian — Virtanen Otto | 2:0 (6:1, 6:2) |
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 Davis Сup World Group | ||||
| 03.02.2024 | Virtanen Otto — Sousa Joao | — — |
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| 02.02.2024 | First round | Virtanen Otto — Borges Nuno | 2:0 (6:2, 6:1) |
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| Quimper | ||||
| 26.01.2024 | Quarter-finals | Virtanen Otto (Retired) — Mayot Harold | 0:0 (-:-) |
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| 25.01.2024 | Second round | Virtanen Otto — Jacquet Kyrian (Retired) | 1:1 (1:6, 4:1) |
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| 23.01.2024 | First round | Barrere Gregoire — Virtanen Otto | 0:2 (5:7, 4:6) |
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 ATP - Australian Open | ||||
| 09.01.2024 | Qualifications - 1st round | Vavassori Andrea — Virtanen Otto | 2:0 (6:0, 6:3) |
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 Tenerife | ||||
| 17.01.2024 | Second round | Maestrelli Francesco — Virtanen Otto | 2:0 (6:4, 6:1) |
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| 16.01.2024 | First round | Shelbayh Abedallah — Virtanen Otto | 0:2 (4:6, 6:7) |
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 ATP - Hong Kong | ||||
| 01.01.2024 | Qialification final | Virtanen Otto — Huesler Marc-Andrea | 0:2 (2:6, 0:6) |
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| 31.12.2023 | Qualifications - 1st round | Munar Clar Jaume Antoni — Virtanen Otto | 1:2 (6:3, 3:6, 4:6) |
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