| Event | Time | Meet | Date |
|---|---|---|---|
| 100m Backstroke | 1:07.48 | 2026 Central Region Div 1 SC Championships | 2026-02-06 |
| 100m Breaststroke | 1:26.78 | 2025 MSSAC Harvest Invitational | 2025-11-01 |
| 100m Butterfly | 1:13.31 | 2025 NYAC Cup | 2025-11-14 |
| 100m Freestyle | 1:01.32 | 2026 Central Region Div 1 SC Championships | 2026-02-06 |
| 200m Backstroke | 2:25.10 | 2025 NYAC Cup | 2025-11-14 |
| 200m Breaststroke | 3:10.56 | 2025 MSSAC Harvest Invitational | 2025-11-01 |
| 200m Butterfly | 2:44.28 | 2025 NYAC Cup | 2025-11-14 |
| 200m Freestyle | 2:12.97 | 2026 Central Region Div 1 SC Championships | 2026-02-06 |
| 200m IM | 2:44.75 | MAC Fall Fest Invitational | 2025-10-18 |
| 400m Freestyle | 4:39.52 | 2026 Central Region Div 1 SC Championships | 2026-02-06 |
| 400m IM | 5:26.67 | 2025 MSSAC Harvest Invitational | 2025-11-01 |
| 50m Backstroke | 31.27 | 2025 NYAC Cup | 2025-11-14 |
| 50m Butterfly | 31.32 | 2025 NYAC Cup | 2025-11-14 |
| 50m Freestyle | 28.79 | 2026 Central Region Div 1 SC Championships | 2026-02-06 |
| 800m Freestyle | 9:34.84 | 2026 Central Region Div 1 SC Championships | 2026-02-06 |
Kromskoy, Matvey's top personal bests include 100m Backstroke (1:07.48), 100m Breaststroke (1:26.78), 100m Butterfly (1:13.31), 100m Freestyle (1:01.32), 200m Backstroke (2:25.10).
Kromskoy, Matvey swims for Etobicoke Swim Club.
Kromskoy, Matvey has competed in 8 meets.