| Event | Time | Meet | Date |
|---|---|---|---|
| 100m Freestyle | 2:11.20 | South Semi Finals | 2025-07-19 |
| 25m Backstroke | 31.68 | Regina Piranhas Invitational Swim Meet | 2025-06-22 |
| 25m Butterfly | 32.53 | Regina Piranhas Invitational Swim Meet | 2025-06-22 |
| 25m Freestyle | 26.61 | Oxbow Sprint Meet | 2025-06-28 |
| 50m Backstroke | 1:08.49 | Regina Piranhas Invitational Swim Meet | 2025-06-22 |
| 50m Breaststroke | 1:15.23 | South Semi Finals | 2025-07-19 |
| 50m Freestyle | 59.31 | South Semi Finals | 2025-07-19 |
Maidanskyi, Matvii's top personal bests include 100m Freestyle (2:11.20), 25m Backstroke (31.68), 25m Butterfly (32.53), 25m Freestyle (26.61), 50m Backstroke (1:08.49).
Maidanskyi, Matvii swims for Estevan Golden Eels Summer Swim Club.
Maidanskyi, Matvii has competed in 3 meets.