| Event | Time | Meet | Date |
|---|---|---|---|
| 100m Backstroke | 1:51.58 | GO Polar Bear Invitational 2026 | 2026-01-16 |
| 100m Breaststroke | 2:12.57 | 2026 February Freeze Invitational | 2026-02-14 |
| 100m Freestyle | 1:40.79 | GO Polar Bear Invitational 2026 | 2026-01-16 |
| 100m IM | 1:57.91 | SWOTT 12&U Series #1 | 2026-02-07 |
| 200m Freestyle | 3:36.21 | OYO Fall 2025 Short Course Invitational | 2025-11-15 |
| 50m Backstroke | 51.02 | GO Polar Bear Invitational 2026 | 2026-01-16 |
| 50m Breaststroke | 59.77 | SWOTT 12&U Series #1 | 2026-02-07 |
| 50m Butterfly | 1:01.39 | OYO Fall 2025 Short Course Invitational | 2025-11-15 |
| 50m Freestyle | 45.99 | 2026 February Freeze Invitational | 2026-02-14 |
Jog, Masahiro's top personal bests include 100m Backstroke (1:51.58), 100m Breaststroke (2:12.57), 100m Freestyle (1:40.79), 100m IM (1:57.91), 200m Freestyle (3:36.21).
Jog, Masahiro swims for Swim Ottawa.
Jog, Masahiro has competed in 6 meets.