| Personal Details | |
| Name | Oliver Rossier |
| Known As | Oliver |
| Year of Birth | 2007 |
| Eligibility Category | Open/Male |
| Membership Details | |||
| Member Number | 1263440 | ||
| Member Status | Current | ||
| Ranked Club | Leamington Spa SC | ||
| Country of International Representation | England | ||
| Membership Categories |
| SE Club Compete |
| Clubs & Organisations | |
| Club | Ranked |
| Leamington Spa SC | Yes |
| Click For Personal Best | 2024 Short Course | Short Course PB | 2024 Long Course | Long Course PB |
| 50m Freestyle | 26.51 | 26.51 | 27.05 | 27.05 |
| 100m Freestyle | . | 59.63 | 58.93 | 58.93 |
| 200m Freestyle | 2:08.55 | 2:08.55 | . | 2:23.18 |
| 400m Freestyle | 4:33.02 | 4:33.02 | . | 7:04.30 |
| 800m Freestyle | . | . | . | . |
| 1500m Freestyle | . | . | . | . |
| 50m Breaststroke | . | 35.77 | . | 38.78 |
| 100m Breaststroke | . | 1:48.48 | . | . |
| 200m Breaststroke | . | 3:47.52 | . | . |
| 50m Butterfly | 28.87 | 28.87 | 29.10 | 29.10 |
| 100m Butterfly | 1:05.83 | 1:05.83 | 1:04.82 | 1:04.82 |
| 200m Butterfly | . | 2:46.39 | . | . |
| 50m Backstroke | . | 32.07 | 32.51 | 32.51 |
| 100m Backstroke | . | 1:11.81 | . | 1:26.18 |
| 200m Backstroke | . | . | . | . |
| 200m Individual Medley | 2:27.79 | 2:27.79 | . | 2:38.94 |
| 400m Individual Medley | . | 5:25.96 | . | 5:52.55 |
| 100m Individual Medley | . | 1:10.15 | . | . |
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