| Event | Time | Meet | Date |
|---|---|---|---|
| 100m Backstroke | 1:48.97 | MAC Rising Star #2 | 2025-05-30 |
| 100m Backstroke | 1:28.68 | 2026 Central Region Div 2 SC Championships | 2026-02-20 |
| 100m Breaststroke | 1:42.39 | 2026 Central Region Div 2 SC Championships | 2026-02-20 |
| 100m Butterfly | 1:51.62 | 2026 BAD Spring Invitational Meet | 2026-03-06 |
| 100m Freestyle | 1:30.29 | BAD Outdoor LC Invitational | 2025-06-20 |
| 100m Freestyle | 1:20.75 | 2026 BAD Spring Invitational Meet | 2026-03-06 |
| 200m Breaststroke | 3:46.39 | David Lawson Invitational 2026 | 2026-01-23 |
| 200m Freestyle | 3:13.67 | BAD Outdoor LC Invitational | 2025-06-20 |
| 200m Freestyle | 3:00.12 | 2026 BAD Spring Invitational Meet | 2026-03-06 |
| 200m IM | 3:49.03 | MAC Rising Star #2 | 2025-05-30 |
| 200m IM | 3:25.72 | David Lawson Invitational 2026 | 2026-01-23 |
| 400m Freestyle | 6:26.88 | MAC Jingle Bell | 2025-12-12 |
| 50m Backstroke | 53.53 | MAC Rising Star #2 | 2025-05-30 |
| 50m Backstroke | 47.40 | 2025 OAK Brad Townsend Fall Classic | 2025-10-17 |
| 50m Breaststroke | 53.14 | MAC Rising Star #2 | 2025-05-30 |
| 50m Breaststroke | 48.29 | 2026 Central Region Div 2 SC Championships | 2026-02-20 |
| 50m Butterfly | 56.82 | MAC Rising Star #2 | 2025-05-30 |
| 50m Butterfly | 49.09 | 2025 Alex Baumann Invitational | 2025-11-21 |
| 50m Freestyle | 40.76 | BAD Outdoor LC Invitational | 2025-06-20 |
| 50m Freestyle | 37.57 | 2026 Central Region Div 2 SC Championships | 2026-02-20 |
Cai, Jason's top personal bests include 100m Backstroke (1:48.97), 100m Backstroke (1:28.68), 100m Breaststroke (1:42.39), 100m Butterfly (1:51.62), 100m Freestyle (1:30.29).
Cai, Jason swims for Oakville Aquatic Club.
Cai, Jason has competed in 8 meets.