| Ligue des Champions | 2021/09/17 17:50 | Andreas Levenko v Sidorenko, Vladimir | W | 0-3 |
| Ligue des Champions | 2021/09/16 12:50 | Brossier, Benjamin v Sidorenko, Vladimir | W | 0-3 |
| Ligue des Champions | 2021/09/15 13:45 | Sidorenko, Vladimir v Zsolt Peto | W | 3-2 |
| Ligue des Champions | 2021/09/15 12:50 | Sidorenko, Vladimir v Demeter, Lehel | L | 2-3 |
| WTT Contender Budapest | 2021/08/17 17:00 | Sidorenko, Vladimir v Truls Moregard | L | 0-3 |
| WTT Contender Budapest | 2021/08/16 18:00 | Joe Seyfried v Sidorenko, Vladimir | W | 2-3 |
| WTT Contender Budapest | 2021/08/15 17:20 | Kramarics, Gergo v Sidorenko, Vladimir | W | 0-3 |
| European Championships | 2021/06/25 17:30 | Kristian Karlsson v Sidorenko, Vladimir | L | 4-1 |
| European Team Championships | 2021/08/28 15:15 | Kas Van Oost v Lesiv, Rimas | W | 3-1 |
| ITTF European Team Championships, Singles | 2021/08/27 18:55 | Kas Van Oost v Ryan Farrell | W | 3-0 |