| Event | Time | Meet | Date |
|---|---|---|---|
| 100m Butterfly | 1:08.42 | MAC Summer Invitational | 2025-07-24 |
| 100m Freestyle | 58.50 | MAC Summer Invitational | 2025-07-24 |
| 200m Butterfly | 2:30.84 | MAC Summer Invitational | 2025-07-24 |
| 200m Freestyle | 2:07.86 | 2025 Central Region Div 1 LC Championships | 2025-06-20 |
| 200m IM | 2:36.56 | MAC Summer Invitational | 2025-07-24 |
| 400m Freestyle | 4:35.51 | 2025 Central Region Div 1 LC Championships | 2025-06-20 |
| 400m IM | 5:19.53 | MAC Rising Star #2 | 2025-05-30 |
| 50m Backstroke | 33.40 | MAC Summer Invitational | 2025-07-24 |
| 50m Breaststroke | 40.00 | MAC Rising Star #2 | 2025-05-30 |
| 50m Butterfly | 31.58 | MAC Summer Invitational | 2025-07-24 |
| 50m Freestyle | 27.77 | MAC Rising Star #2 | 2025-05-30 |
| 800m Freestyle | 9:31.07 | MAC Rising Star #2 | 2025-05-30 |
Yui Hei Mason Chan's top personal bests include 100m Butterfly (1:08.42), 100m Freestyle (58.50), 200m Butterfly (2:30.84), 200m Freestyle (2:07.86), 200m IM (2:36.56).
Yui Hei Mason Chan swims for Markham Aquatic Club.
Yui Hei Mason Chan has competed in 4 meets.