| WTT Feeder Otocec Quals | 03/26 15:00 | 6 | Balazs Lei v Andrii Grebeniuk | L | 1-3 | |
| Oman Open U21 Women | 01/26 12:30 | - | Borna Petek v Balazs Lei | W | 0-3 | |
| Oman Open U21 Women | 01/25 13:00 | - | Hugo Deschamps v Balazs Lei | L | 4-2 | |
| WTT Feeder Stockholm Quals | 10/03 15:50 | - | Georgios Stamatouros v Balazs Lei | W | 0-3 | |
| WTT Feeder Stockholm Quals | 10/03 09:20 | - | Federico Otalvaro v Balazs Lei | W | 2-3 | |
| WTT Feeder Olomouc Quals 2023 | 08/23 13:40 | - | Zheng Sun v Balazs Lei | L | 3-1 | |
| WTT Feeder Olomouc Quals 2023 | 08/22 14:05 | - | Balazs Lei v Radim Moravek | W | 3-1 | |
| Euro Youth Champs Teams | 07/15 17:20 | - | Balazs Lei v Federico Vallino | W | 3-2 | |
| WTT Contender Zagreb Quals | 06/26 19:10 | - | Balazs Lei v Dongsoo Kang | L | 1-3 | |
| WTT Contender Zagreb Quals | 06/26 10:25 | - | Balazs Lei v Edward Ly | W | 3-2 | |
| WTT Contender Budapest | 08/15 08:00 | - | Jakub Zelinka v Balazs Lei | L | 3-0 |