Nathanael O'Brien
Personal records
| Event | Course | Best | Cut | Date | Meet |
|---|---|---|---|---|---|
| 50 Freestyle | SCY | 39.84 | +4.75s to B | 2025-03-14 | 2025 Northwestern Divisional Championship |
| 100 Freestyle | SCY | 2:11.70 | +55.61s to B | 2025-03-14 | 2025 Northwestern Divisional Championship |
| 50 Backstroke | SCY | 1:16.19 | +35.00s to B | 2025-03-14 | 2025 Northwestern Divisional Championship |
| 100 Backstroke | SCY | 2:43.34 | +73.55s to B | 2025-03-14 | 2025 Northwestern Divisional Championship |
| 50 Freestyle | LCM | 55.59 | +15.70s to B | 2025-06-21 | Tommie L. Jackson Diversity Invitational |
| 100 Backstroke | LCM | 2:35.75 | +51.06s to B | 2025-06-21 | Tommie L. Jackson Diversity Invitational |
| 50 Breaststroke | LCM | 1:22.15 | +28.76s to B | 2025-06-21 | Tommie L. Jackson Diversity Invitational |
Cuts are USA Swimming single-age motivational standards (B → AAAA) at age 11.
IMX / IMR
IMX 11-12 · LCM
92 points (1/5 events — incomplete)
| Event | Time | Points |
|---|---|---|
| 100 BK LCM | 2:35.75 | 92 |
| 400 FR LCM | — | 0 |
| 100 BR LCM | — | 0 |
| 100 FL LCM | — | 0 |
| 200 IM LCM | — | 0 |
IMR 11-12 · LCM
84 points (1/5 events — incomplete)
| Event | Time | Points |
|---|---|---|
| 50 BR LCM | 1:22.15 | 84 |
| 200 FR LCM | — | 0 |
| 50 BK LCM | — | 0 |
| 50 FL LCM | — | 0 |
| 200 IM LCM | — | 0 |
Scored against AAAA motivational base times: ordering is exact, absolute points run ~25% above the official USA Swimming scale.
Progression
Faster times are higher. One card per event, all courses & history.