| Event | Time | Meet | Date |
|---|---|---|---|
| 100m Freestyle | 2:01.26 | BAD Fall Development Meet | 2025-11-30 |
| 25m Backstroke | 29.86 | 2025 Finale HAC Jr. Competitive | 2025-06-08 |
| 25m Breaststroke | 37.90 | 2025 Finale HAC Jr. Competitive | 2025-06-08 |
| 50m Backstroke | 58.71 | 2026 MMST Winter Novice Meet | 2026-01-10 |
| 50m Breaststroke | 1:31.35 | 2026 MMST Winter Novice Meet | 2026-01-10 |
| 50m Butterfly | 1:28.23 | GMAC Winter Skills and Thrills | 2026-02-01 |
| 50m Freestyle | 48.43 | 2025 Fall Challenge - Jr .Competitive | 2025-11-16 |
Serogin, Dennis's top personal bests include 100m Freestyle (2:01.26), 25m Backstroke (29.86), 25m Breaststroke (37.90), 50m Backstroke (58.71), 50m Breaststroke (1:31.35).
Serogin, Dennis swims for Hamilton Aquatic Club.
Serogin, Dennis has competed in 5 meets.