| Event | Time | Meet | Date |
|---|---|---|---|
| 100m Backstroke | 1:20.36 | SKSC Winterfest | 2026-01-24 |
| 100m Breaststroke | 1:25.03 | SKSC Winterfest | 2026-01-24 |
| 100m Butterfly | 1:26.34 | SKSC Summerfest 2025 | 2025-07-26 |
| 100m Freestyle | 1:10.61 | BC Winter Divisionals - Vancouver & Fraser | 2026-02-20 |
| 200m Backstroke | 2:54.27 | SKSC Winterfest | 2026-01-24 |
| 200m Breaststroke | 3:02.39 | BC Winter Divisionals - Vancouver & Fraser | 2026-02-20 |
| 200m Freestyle | 2:35.52 | BC Winter Divisionals - Vancouver & Fraser | 2026-02-20 |
| 200m IM | 2:49.42 | BC Winter Divisionals - Vancouver & Fraser | 2026-02-20 |
| 400m Freestyle | 5:41.33 | SKSC Winterfest | 2026-01-24 |
| 50m Backstroke | 36.65 | BC Winter Divisionals - Vancouver & Fraser | 2026-02-20 |
| 50m Breaststroke | 38.72 | 2026 BC Winter Provincial Championships | 2026-03-05 |
| 50m Butterfly | 35.43 | VPSC Fall Invitational 2025 | 2025-10-18 |
| 50m Freestyle | 31.19 | BC Winter Divisionals - Vancouver & Fraser | 2026-02-20 |
Tsoi, Pui Ying's top personal bests include 100m Backstroke (1:20.36), 100m Breaststroke (1:25.03), 100m Butterfly (1:26.34), 100m Freestyle (1:10.61), 200m Backstroke (2:54.27).
Tsoi, Pui Ying swims for Vancouver Pacific Swim Club.
Tsoi, Pui Ying has competed in 7 meets.