| Event | Time | Meet | Date |
|---|---|---|---|
| 100m Backstroke | 2:07.87 | 2025 Stingrays' Annual Winter Break Invitational | 2025-12-12 |
| 100m Breaststroke | 2:37.09 | 2025 Stingrays' Annual Winter Break Invitational | 2025-12-12 |
| 100m Freestyle | 1:56.41 | 2025 Stingrays' Annual Winter Break Invitational | 2025-12-12 |
| 100m IM | 2:05.28 | Sharks IM Sprint Endurance Challenge | 2026-02-07 |
| 50m Backstroke | 52.95 | Sharks IM Sprint Endurance Challenge | 2026-02-07 |
| 50m Butterfly | 1:02.50 | Sharks IM Sprint Endurance Challenge | 2026-02-07 |
| 50m Freestyle | 50.01 | 2025 Stingrays' Annual Winter Break Invitational | 2025-12-12 |
Grzeslo, Rosalie's top personal bests include 100m Backstroke (2:07.87), 100m Breaststroke (2:37.09), 100m Freestyle (1:56.41), 100m IM (2:05.28), 50m Backstroke (52.95).
Grzeslo, Rosalie swims for Comox Valley Aquatic Club.
Grzeslo, Rosalie has competed in 2 meets.