| Event | Time | Meet | Date |
|---|---|---|---|
| 100m Backstroke | 1:50.93 | 2025 Alex Baumann Invitational | 2025-11-21 |
| 100m Breaststroke | 1:53.44 | 2025 Alex Baumann Invitational | 2025-11-21 |
| 100m Freestyle | 1:29.77 | Mallards December 2025 IHC | 2025-12-17 |
| 50m Backstroke | 52.48 | 2025 Alex Baumann Invitational | 2025-11-21 |
| 50m Breaststroke | 51.92 | 2025 Alex Baumann Invitational | 2025-11-21 |
| 50m Butterfly | 51.69 | RHAC Fall Classic 2025 | 2025-10-24 |
| 50m Freestyle | 40.81 | Mallards December 2025 IHC | 2025-12-17 |
Leon, Sing Hei's top personal bests include 100m Backstroke (1:50.93), 100m Breaststroke (1:53.44), 100m Freestyle (1:29.77), 50m Backstroke (52.48), 50m Breaststroke (51.92).
Leon, Sing Hei swims for Mallards Swim Team.
Leon, Sing Hei has competed in 4 meets.