| Event | Time | Meet | Date |
|---|---|---|---|
| 100m Backstroke | 1:25.33 | 2026 NKB Winter Invitational Long Course | 2026-01-16 |
| 100m Backstroke | 1:20.33 | KBM Heats & Finals | 2026-02-20 |
| 100m Breaststroke | 1:29.22 | KBM Heats & Finals | 2026-02-20 |
| 100m Butterfly | 1:17.99 | 2026 NKB Winter Invitational Long Course | 2026-01-16 |
| 100m Butterfly | 1:13.35 | BBST Fall Invitational 2025 | 2025-11-21 |
| 100m Freestyle | 1:14.14 | 2026 NKB Winter Invitational Long Course | 2026-01-16 |
| 100m Freestyle | 1:07.48 | Perth Halloween Howler | 2025-10-24 |
| 100m IM | 1:21.83 | KBM Qualifier | 2025-05-24 |
| 200m Butterfly | 2:55.92 | BBST Fall Invitational 2025 | 2025-11-21 |
| 200m Freestyle | 2:35.73 | Perth Halloween Howler | 2025-10-24 |
| 200m IM | 2:56.79 | 2026 NKB Winter Invitational Long Course | 2026-01-16 |
| 200m IM | 2:48.65 | KBM Heats & Finals | 2026-02-20 |
| 400m Freestyle | 5:49.93 | 2026 NKB Winter Invitational Long Course | 2026-01-16 |
| 400m Freestyle | 5:21.33 | Perth Candy Cane Meet | 2025-12-12 |
| 50m Butterfly | 33.49 | 2026 NKB Winter Invitational Long Course | 2026-01-16 |
| 50m Butterfly | 32.21 | Perth Halloween Howler | 2025-10-24 |
| 50m Freestyle | 31.91 | 2026 NKB Winter Invitational Long Course | 2026-01-16 |
| 50m Freestyle | 30.39 | January In House Time Trial Perth | 2026-01-09 |
Patterson, Liam's top personal bests include 100m Backstroke (1:25.33), 100m Backstroke (1:20.33), 100m Breaststroke (1:29.22), 100m Butterfly (1:17.99), 100m Butterfly (1:13.35).
Patterson, Liam swims for Perth Stingrays Aquatic Club.
Patterson, Liam has competed in 7 meets.