| Event | Time | Meet | Date |
|---|---|---|---|
| 100m Backstroke | 1:18.83 | UCSC Spring Start-up | 2026-04-25 |
| 100m Backstroke | 1:14.44 | UCSC Fall Back Invitational | 2025-11-07 |
| 100m Breaststroke | 1:35.98 | 2026 Pronghorn Classic | 2026-03-13 |
| 100m Butterfly | 1:28.12 | Western Transmountain Festival III | 2026-02-20 |
| 100m Freestyle | 1:10.27 | Western Transmountain Festival III | 2026-02-20 |
| 100m Freestyle | 1:08.89 | Winter Provincial Trials | 2026-03-06 |
| 200m Backstroke | 2:43.44 | Winter Provincial Trials | 2026-03-06 |
| 200m Freestyle | 2:40.21 | Summer Provincial Trials LC | 2025-06-27 |
| 200m Freestyle | 2:29.35 | Winter Provincial Trials | 2026-03-06 |
| 200m IM | 2:58.94 | UCSC Spring Start-up | 2026-04-25 |
| 200m IM | 2:56.83 | Winter Provincial Trials | 2026-03-06 |
| 400m Freestyle | 5:38.75 | UCSC Grand Prix | 2026-01-30 |
| 50m Backstroke | 35.05 | Summer Provincial Trials LC | 2025-06-27 |
| 50m Backstroke | 33.33 | Winter Provincial Trials | 2026-03-06 |
| 50m Breaststroke | 45.84 | UCSC Spring Start-up | 2026-04-25 |
| 50m Breaststroke | 44.95 | UCSC Fall Back Invitational | 2025-11-07 |
| 50m Butterfly | 34.79 | Western Transmountain Festival III | 2026-02-20 |
| 50m Butterfly | 35.06 | UCSC Grand Prix | 2026-01-30 |
| 50m Freestyle | 32.21 | UCSC Spring Start-up | 2026-04-25 |
| 50m Freestyle | 30.95 | Winter Provincial Trials | 2026-03-06 |
Watson, Cassidy's top personal bests include 100m Backstroke (1:18.83), 100m Backstroke (1:14.44), 100m Breaststroke (1:35.98), 100m Butterfly (1:28.12), 100m Freestyle (1:10.27).
Watson, Cassidy swims for Calgary Swimming.
Watson, Cassidy has competed in 9 meets.