| Event | Time | Meet | Date |
|---|---|---|---|
| 100m Butterfly | 1:08.26 | Thunderbolts Fall SC Invitational | 2025-11-15 |
| 100m IM | 1:10.72 | 2025 Tbaytel Cyclone Invitational | 2025-10-25 |
| 200m Butterfly | 2:23.81 | Thunderbolts Fall SC Invitational | 2025-11-15 |
| 200m Freestyle | 2:07.97 | Thunderbolts Fall SC Invitational | 2025-11-15 |
| 200m IM | 2:27.21 | Thunderbolts Fall SC Invitational | 2025-11-15 |
| 400m Freestyle | 4:27.95 | Thunderbolts Fall SC Invitational | 2025-11-15 |
| 400m IM | 5:04.38 | Thunderbolts Fall SC Invitational | 2025-11-15 |
| 50m Butterfly | 31.88 | Thunderbolts Fall SC Invitational | 2025-11-15 |
| 50m Freestyle | 28.79 | 2025 Tbaytel Cyclone Invitational | 2025-10-25 |
| 800m Freestyle | 9:22.32 | Thunderbolts Fall SC Invitational | 2025-11-15 |
Dennis, Jack's top personal bests include 100m Butterfly (1:08.26), 100m IM (1:10.72), 200m Butterfly (2:23.81), 200m Freestyle (2:07.97), 200m IM (2:27.21).
Dennis, Jack swims for Thunder Bay Thunderbolts.
Dennis, Jack has competed in 7 meets.