| Event | Time | Meet | Date |
|---|---|---|---|
| 100m Backstroke | 1:49.39 | Sask Age Group Racing Series #3 South Div | 2026-03-07 |
| 100m Freestyle | 1:53.85 | 2026 Sask Open Short Course Junior Provincials | 2026-02-27 |
| 25m Backstroke | 23.75 | 2026 Sask Racing Series #1-South Div | 2025-11-02 |
| 25m Breaststroke | 31.44 | 2026 Sask racing Series South Division | 2025-12-06 |
| 25m Freestyle | 27.19 | Regina Racing Series #2 | 2025-06-07 |
| 50m Backstroke | 53.75 | Goldfins Pentathlon | 2026-02-07 |
| 50m Backstroke | 49.69 | Saskatchewan Racing Series #4 – South Division | 2026-04-25 |
| 50m Breaststroke | 1:02.56 | Sask Age Group Racing Series #3 South Div | 2026-03-07 |
| 50m Breaststroke | 1:01.44 | Saskatchewan Racing Series #4 – South Division | 2026-04-25 |
| 50m Butterfly | 1:02.56 | 2026 Sask Open Short Course Junior Provincials | 2026-02-27 |
| 50m Freestyle | 45.52 | Goldfins Pentathlon | 2026-02-07 |
| 50m Freestyle | 44.27 | Saskatchewan Racing Series #4 – South Division | 2026-04-25 |
Irvine, Oliver's top personal bests include 100m Backstroke (1:49.39), 100m Freestyle (1:53.85), 25m Backstroke (23.75), 25m Breaststroke (31.44), 25m Freestyle (27.19).
Irvine, Oliver swims for Flatland Swimming.
Irvine, Oliver has competed in 8 meets.