| WTT Star Contender Doha | 2021/09/20 13:00 | Hiroto Shinozuka v Sadi Ismailov | L | 3-1 |
| Russia Cup | 2021/09/08 15:32 | Sadi Ismailov v Denis Gavrilov | W | 3-1 |
| Czech Open | 2021/08/24 11:30 | Sathiyan Gnanasekaran v Sadi Ismailov | L | 4-0 |
| Czech Open | 2021/08/23 12:20 | Tomas Martinko v Sadi Ismailov | W | 1-4 |
| WTT Contender Budapest | 2021/08/17 15:00 | Sadi Ismailov v Kilian Ort | L | 1-3 |
| WTT Contender Budapest | 2021/08/16 16:40 | Sadi Ismailov v Samuel Novota | W | 3-1 |
| WTT Contender Budapest | 2021/08/15 17:20 | Sadi Ismailov v Jeet Chandra | W | 3-0 |
| Russia Premier League | 2021/06/13 10:40 | Sadi Ismailov v Artur Abusev | W | 3-0 |
| Europe Cup | 2021/10/22 14:30 | Ronald Redjep v David Serdaroglu | W | 2-3 |
| Austrian Bundesliga 1 | 2021/10/10 14:40 | Samuel Kaluzny v David Serdaroglu | L | 3-2 |
| Others | 2021/10/10 13:42 | Patrik Juhasz v David Serdaroglu | L | 3-0 |
| Austria State Championship Men | 2021/08/29 19:00 | Robert Gardos v David Serdaroglu | L | 4-1 |
| WTT Contender Budapest | 2021/08/17 16:20 | Dang Qiu v David Serdaroglu | L | 3-0 |
| WTT Contender Budapest | 2021/08/16 18:00 | Bence Balogh v David Serdaroglu | W | 0-3 |
| WTT Contender Budapest | 2021/08/15 18:00 | Tomas Koldas v David Serdaroglu | W | 0-3 |
| European Championships | 2021/06/23 09:55 | Maciej Kubik v David Serdaroglu | L | 3-0 |