| Event | Time | Meet | Date |
|---|---|---|---|
| 100m Backstroke | 1:45.15 | Beast Cup 2026 | 2026-01-10 |
| 100m Breaststroke | 2:05.71 | Beast Cup 2026 | 2026-01-10 |
| 100m Freestyle | 1:32.54 | KBM Heats & Finals | 2026-02-20 |
| 100m IM | 1:57.60 | KBM Distance & Development | 2025-11-08 |
| 200m Freestyle | 3:28.04 | KBM Heats & Finals | 2026-02-20 |
| 200m IM | 3:58.95 | Beast Cup 2026 | 2026-01-10 |
| 50m Backstroke | 46.94 | Beast Cup 2026 | 2026-01-10 |
| 50m Breaststroke | 57.53 | KBM Heats & Finals | 2026-02-20 |
| 50m Butterfly | 1:06.64 | KBM Pentathlon | 2025-10-19 |
| 50m Freestyle | 42.05 | Beast Cup 2026 | 2026-01-10 |
Scott, Marissa's top personal bests include 100m Backstroke (1:45.15), 100m Breaststroke (2:05.71), 100m Freestyle (1:32.54), 100m IM (1:57.60), 200m Freestyle (3:28.04).
Scott, Marissa swims for Kingston Blue Marlins.
Scott, Marissa has competed in 5 meets.