| Event | Time | Meet | Date |
|---|---|---|---|
| 100m Backstroke | 1:17.60 | 2025 Central Region Div 2 LC Championships | 2025-06-13 |
| 100m Freestyle | 1:09.38 | MAC Rising Star #2 | 2025-05-30 |
| 200m Backstroke | 2:49.74 | 2025 Central Region Div 2 LC Championships | 2025-06-13 |
| 200m IM | 3:00.51 | 2025 Central Region Div 2 LC Championships | 2025-06-13 |
| 400m Freestyle | 5:25.52 | 2025 Central Region Div 2 LC Championships | 2025-06-13 |
| 50m Backstroke | 35.83 | MAC Rising Star #2 | 2025-05-30 |
| 50m Breaststroke | 44.97 | MAC Rising Star #2 | 2025-05-30 |
| 50m Butterfly | 34.57 | MAC Rising Star #2 | 2025-05-30 |
| 50m Freestyle | 30.73 | MAC Rising Star #2 | 2025-05-30 |
Sun, Cheng's top personal bests include 100m Backstroke (1:17.60), 100m Freestyle (1:09.38), 200m Backstroke (2:49.74), 200m IM (3:00.51), 400m Freestyle (5:25.52).
Sun, Cheng swims for Oakville Aquatic Club.
Sun, Cheng has competed in 2 meets.