| Event | Time | Meet | Date |
|---|---|---|---|
| 100m Backstroke | 1:33.13 | AA AGD Meet & Nova Tech #3 Central | 2026-01-24 |
| 100m Butterfly | 1:48.69 | AA Spring Champs | 2025-06-06 |
| 100m Freestyle | 1:23.20 | AA Spring Champs | 2025-06-06 |
| 100m IM | 1:35.31 | 2025 DAL Sprint Meet | 2025-10-19 |
| 200m Backstroke | 3:33.85 | 2025 AGD Distance Central | 2025-11-01 |
| 200m Freestyle | 3:08.22 | 2025 Candy Cane Invitational | 2025-12-12 |
| 200m IM | 3:12.38 | AA AGD Meet & Nova Tech #3 Central | 2026-01-24 |
| 400m Freestyle | 6:20.06 | AA Age Group Development Meet & Nova Tech #4 C | 2026-02-14 |
| 50m Backstroke | 44.85 | 2025 DAL Sprint Meet | 2025-10-19 |
| 50m Breaststroke | 53.37 | AA Spring Champs | 2025-06-06 |
| 50m Butterfly | 41.09 | AA Spring Champs | 2025-06-06 |
| 50m Freestyle | 37.12 | 2025 Candy Cane Invitational | 2025-12-12 |
Clifford, Sebastian's top personal bests include 100m Backstroke (1:33.13), 100m Butterfly (1:48.69), 100m Freestyle (1:23.20), 100m IM (1:35.31), 200m Backstroke (3:33.85).
Clifford, Sebastian swims for Halifax Trojan Aquatic Club.
Clifford, Sebastian has competed in 6 meets.