| Event | Time | Meet | Date |
|---|---|---|---|
| 100m Backstroke | 1:28.47 | Manitoba Open Junior Provincials | 2026-02-06 |
| 100m Breaststroke | 1:34.01 | Manitoba Open Junior Provincials | 2026-02-06 |
| 100m Freestyle | 1:16.58 | 2026 Manta Grand Prix | 2026-02-20 |
| 100m IM | 1:36.24 | 2025 Prairie Winter International | 2025-12-11 |
| 200m Breaststroke | 3:22.45 | Manitoba Open Junior Provincials | 2026-02-06 |
| 200m Freestyle | 2:54.59 | Manitoba Open Junior Provincials | 2026-02-06 |
| 50m Backstroke | 40.73 | Seals West Side Challenge | 2025-11-28 |
| 50m Breaststroke | 40.49 | St. James Seals Invitational | 2026-01-23 |
| 50m Butterfly | 40.45 | Manitoba Open Junior Provincials | 2026-02-06 |
| 50m Freestyle | 32.75 | 2026 Manta Grand Prix | 2026-02-20 |
Deng, James's top personal bests include 100m Backstroke (1:28.47), 100m Breaststroke (1:34.01), 100m Freestyle (1:16.58), 100m IM (1:36.24), 200m Breaststroke (3:22.45).
Deng, James swims for Steinbach Skimmers.
Deng, James has competed in 7 meets.