| Syed Modi Int. | 01/21 08:50 | 3 | Sirant, Sergey v Mithun Manjunath | L | 1-2 | |
| Syed Modi Int. | 01/20 08:00 | 4 | Chirag Sen v Sirant, Sergey | W | 1-2 | |
| Syed Modi Int. | 01/18 06:50 | 5 | Kiran George v Sirant, Sergey | W | 0-2 | |
| Open d'Inde | 01/14 08:50 | 3 | Sirant, Sergey v Kean Yew Loh | L | 0-2 | |
| Open d'Inde | 01/13 07:10 | 4 | Kalle Koljonen v Sirant, Sergey | W | 0-2 | |
| Open d'Inde | 01/11 05:10 | 5 | June Wei Cheam v Sirant, Sergey | W | 0-2 | |
| World Championships | 12/13 08:40 | 6 | Sirant, Sergey v Kanta Tsuneyama | L | 1-2 | |
| Olympics 2020 - Men | 07/28 09:00 | 1 | Anthony Sinisuka Ginting v Sirant, Sergey | L | 2-0 | |
| Olympics 2020 - Men | 07/27 01:00 | 1 | Sirant, Sergey v Krausz, Gergely | W | 2-0 | |
| Portuguese Int. | 05/07 14:50 | 5 | Lane, Alex v Sirant, Sergey | L | 2-1 | |
| Championnat d'Europe | 04/28 11:40 | 1 | Sirant, Sergey v Leverdez, Brice | L | 1-2 | |
| Orléans Masters | 03/24 11:00 | 5 | Xiaodong Sheng v Sirant, Sergey | L | 2-1 | |
| Orléans Masters | 03/23 17:45 | 6 | Kim Bruun v Sirant, Sergey | W | 1-2 | |
| Open de Suisse | 03/03 14:30 | 5 | Sirant, Sergey v Zii Jia Lee | L | 0-2 | |
| Masters d'Espagne | 02/20 13:25 | 4 | Joergensen, J. O. v Sirant, Sergey | L | 2-0 | |
| Masters d'Espagne | 02/19 10:20 | 5 | Toby Penty v Sirant, Sergey | W | 0-2 | |
| Championnats d'Europe par équipe | 02/14 14:30 | - | Sirant, Sergey v Dimitar Yanakiev | L | 0-2 | |
| Championnats d'Europe par équipe | 02/13 17:30 | - | Sirant, Sergey v Dubowski, Mateusz | D | Retired | |
| Thailand Masters Qual | 01/21 05:55 | - | Lin, Yu Hsien v Sirant, Sergey | L | 2-1 | |
| Thailand Masters Qual | 01/21 03:35 | - | Toma Junior Popov v Sirant, Sergey | W | 0-2 | |
| Italian Int. | 12/13 09:00 | - | Leverdez, Brice v Sirant, Sergey | L | 2-0 | |
| Hungarian Int. | 11/01 15:20 | 3 | Ho-Shue, Jason Anthony v Sirant, Sergey | L | 2-1 | |
| Hungarian Int. | 11/01 12:00 | 4 | Kalle Koljonen v Sirant, Sergey | W | 1-2 | |
| Hungarian Int. | 10/31 13:10 | 5 | Sirant, Sergey v Nilsson, Jacob | W | 2-1 | |
| Dutch Open | 10/11 15:00 | 3 | Sirant, Sergey v Burestedt, Felix | L | 0-2 | |
| Dutch Open | 10/10 13:20 | 4 | Sirant, Sergey v Toby Penty | W | 2-1 | |
| Dutch Open | 10/09 11:55 | 5 | Sirant, Sergey v Toma Junior Popov | W | 2-1 | |
| Dutch Open | 10/08 13:55 | 6 | Sirant, Sergey v Kim Bruun | W | 2-1 | |
| World Championships | 08/19 16:00 | 6 | Rouxel, Thomas v Sirant, Sergey | L | 2-0 | |
| Russia Open 2019, MS | 07/17 01:20 | 5 | Verma, Siril v Sirant, Sergey | L | 2-1 |