| Event | Time | Meet | Date |
|---|---|---|---|
| 100m Backstroke | 1:15.98 | 2026 Central Region Div 2 SC Championships | 2026-02-20 |
| 100m Breaststroke | 1:37.61 | RHAC Fall Classic 2025 | 2025-10-24 |
| 100m Butterfly | 1:18.47 | 2026 Steve Kingston Memorial | 2026-03-06 |
| 100m Freestyle | 1:05.37 | 2026 Central Region Div 2 SC Championships | 2026-02-20 |
| 100m IM | 1:23.11 | RHAC Fall Classic 2025 | 2025-10-24 |
| 200m Backstroke | 2:40.86 | 2026 Steve Kingston Memorial | 2026-03-06 |
| 200m Breaststroke | 3:22.37 | 2025 MSSAC Open | 2025-12-19 |
| 200m Butterfly | 2:53.55 | 2026 Steve Kingston Memorial | 2026-03-06 |
| 200m Freestyle | 2:23.01 | 2026 Central Region Div 2 SC Championships | 2026-02-20 |
| 200m IM | 2:50.43 | 2025 MSSAC Open | 2025-12-19 |
| 400m Freestyle | 4:55.60 | 2026 Steve Kingston Memorial | 2026-03-06 |
| 400m IM | 5:52.42 | 2026 Central Region Div 2 SC Championships | 2026-02-20 |
| 50m Backstroke | 37.19 | 2026 Central Region Div 2 SC Championships | 2026-02-20 |
| 50m Breaststroke | 43.52 | RHAC Fall Classic 2025 | 2025-10-24 |
| 50m Butterfly | 35.71 | RHAC Fall Classic 2025 | 2025-10-24 |
| 50m Freestyle | 30.67 | 2026 Central Region Div 2 SC Championships | 2026-02-20 |
| 800m Freestyle | 10:28.01 | 2025 Alex Baumann Invitational | 2025-11-21 |
Lee, Casey's top personal bests include 100m Backstroke (1:15.98), 100m Breaststroke (1:37.61), 100m Butterfly (1:18.47), 100m Freestyle (1:05.37), 100m IM (1:23.11).
Lee, Casey swims for The Richmond Hill Aquatic Club.
Lee, Casey has competed in 9 meets.