| Event | Time | Meet | Date |
|---|---|---|---|
| 100m Breaststroke | 1:04.28 | 2023-11-25 | |
| 100m Butterfly | 1:02.16 | 2023-12-15 | |
| 100m Freestyle | 56.42 | 2023-05-12 | |
| 200m Backstroke | 2:30.29 | 2023-05-13 | |
| 200m Breaststroke | 2:22.67 | 2025-01-19 | |
| 200m Freestyle | 2:04.76 | 2024-01-21 | |
| 200m Medley | 2:15.53 | 2022-12-03 | |
| 50m Breaststroke | 30.61 | 2023-12-15 | |
| 50m Butterfly | 28.01 | 2022-12-02 | |
| 50m Freestyle | 25.08 | 2023-12-16 |
Walker, Alex's top personal bests include 100m Breaststroke (1:04.28), 100m Butterfly (1:02.16), 100m Freestyle (56.42), 200m Backstroke (2:30.29), 200m Breaststroke (2:22.67).
Walker, Alex swims for Brock University.