| WTT Feeder Varazdin Quals | 04/02 13:00 | 59 | Stoyan Sariev v Minhyeok Kim | L | 1-3 | |
| WTT Feeder Otocec Quals | 03/27 09:20 | 6 | Temuulen Myandal v Stoyan Sariev | L | 3-0 | |
| WTT Feeder Otocec Quals | 10/30 15:35 | 6 | Tristan Flore v Stoyan Sariev | L | 3-0 | |
| WTT Feeder Panagyurishte | 08/31 17:00 | - | Stoyan Sariev v Linwei Sai | L | 0-3 | |
| WTT Feeder Panagyurishte Quals | 08/29 15:50 | - | Stoyan Sariev v Georgi Eftimov | W | 3-0 |