Stadium: Court Central Round: 26 Ground: Hardcourt outdoor
| Challenger Andria | 2018/11/20 17:45 | Viola, Matteo v Stakhovsky, Sergiy | 1-6,5-7 |
| Segovia, Spain | 2018/07/31 14:10 | Stakhovsky, Sergiy v Viola, Matteo | 3-6,6-2,6-7 |
| Portoroz, Slovénie | 2017/08/08 14:20 | Viola, Matteo v Stakhovsky, Sergiy | 6-7,2-6 |
| ATP Mallorca | 2021/06/19 16:30 | Viola, Matteo v Joao Sousa | 4-6,4-6 |
| Challenger - Aix en Provence | 2021/06/15 16:25 | Elias Ymer v Viola, Matteo | 6-4,7-6 |
| Challenger - Nottingham | 2021/06/06 18:30 | Igor Sijsling v Viola, Matteo | 6-7,6-1,6-0 |
| ATP Parma | 2021/05/23 12:55 | Ymer, Mikael v Viola, Matteo | 6-4,3-6,6-0 |
| ATP Parma | 2021/05/22 12:50 | Evgeny Karlovskiy v Viola, Matteo | 5-7,7-5,5-7 |
| Challenger Biella | 2021/05/17 14:55 | Viola, Matteo v Alexandre Muller | 6-4,3-6,1-6 |
| Challenger - Zagreb | 2021/05/09 11:10 | Emilio Gomez v Viola, Matteo | 7-5,6-7,6-1 |
| Challenger Biella | 2021/05/03 08:30 | Maximilian Marterer v Viola, Matteo | 6-3,7-5 |
| Challenger Porto | 2021/06/28 14:50 | Stakhovsky, Sergiy v Soeda, Go | 2-6,6-2,7-6 |
| Wimbledon, London, Great Britain | 2021/06/23 14:15 | Gregoire Barrere v Stakhovsky, Sergiy | 7-5,6-3 |
| Wimbledon, London, Great Britain | 2021/06/22 14:50 | Stakhovsky, Sergiy v Soeda, Go | 6-3,7-6 |
| ATP Halle | 2021/06/12 15:10 | Stakhovsky, Sergiy v Arthur Rinderknech | 4-6,4-6 |
| Stuttgart, Germany | 2021/06/07 12:30 | Stakhovsky, Sergiy v Gojowczyk, Peter | 1-6,6-7 |
| Open de France | 2021/05/26 11:55 | Taro Daniel v Stakhovsky, Sergiy | 6-1,6-4 |
| Open de France | 2021/05/25 08:30 | Joao Domingues v Stakhovsky, Sergiy | 5-7,4-6 |
| Challenger - Prague | 2021/05/06 10:00 | Stakhovsky, Sergiy v Sumit Nagal | 6-4,1-6,4-6 |