| Event | Time | Meet | Date |
|---|---|---|---|
| 100m Backstroke | 1:57.19 | MAC Rising Star #2 | 2025-05-30 |
| 100m Backstroke | 1:43.33 | Gus Ryder Memorial Cup 2025 | 2025-11-07 |
| 100m Breaststroke | 1:47.77 | MAC Rising Star #2 | 2025-05-30 |
| 100m Breaststroke | 1:41.08 | 2026 Central Region Div 2 SC Championships | 2026-02-20 |
| 100m Freestyle | 1:39.57 | MAC Rising Star #2 | 2025-05-30 |
| 100m Freestyle | 1:32.06 | 2025 OAK Brad Townsend Fall Classic | 2025-10-17 |
| 200m Backstroke | 3:43.49 | Gus Ryder Memorial Cup 2025 | 2025-11-07 |
| 200m Breaststroke | 3:49.31 | MAC Rising Star #2 | 2025-05-30 |
| 200m Breaststroke | 3:36.60 | 2026 Central Region Div 2 SC Championships | 2026-02-20 |
| 200m Freestyle | 3:30.24 | 2025 OAK Brad Townsend Fall Classic | 2025-10-17 |
| 200m IM | 3:42.86 | Gus Ryder Memorial Cup 2025 | 2025-11-07 |
| 400m Freestyle | 7:07.84 | David Lawson Invitational 2026 | 2026-01-23 |
| 50m Backstroke | 50.64 | David Lawson Invitational 2026 | 2026-01-23 |
| 50m Breaststroke | 48.61 | 2026 Central Region Div 2 SC Championships | 2026-02-20 |
| 50m Butterfly | 57.23 | MAC Rising Star #2 | 2025-05-30 |
| 50m Butterfly | 49.61 | 2026 BAD Spring Invitational Meet | 2026-03-06 |
| 50m Freestyle | 41.61 | MAC Rising Star #2 | 2025-05-30 |
| 50m Freestyle | 42.38 | 2025 OAK Brad Townsend Fall Classic | 2025-10-17 |
Yu, Juncheng's top personal bests include 100m Backstroke (1:57.19), 100m Backstroke (1:43.33), 100m Breaststroke (1:47.77), 100m Breaststroke (1:41.08), 100m Freestyle (1:39.57).
Yu, Juncheng swims for Oakville Aquatic Club.
Yu, Juncheng has competed in 7 meets.