| Event | Heat | Status | |
|---|---|---|---|
| Women 400 M Nike Open (Prelims) | 1| | ||
| Thursday 7:26 PM |
| Record | Athlete | Date | ||
|---|---|---|---|---|
| MR | Meet | Sanya Richards - Nike | 49.27 | 6/24/2006 |
| FR | Hayward | Shaunae Miller-Uibo - BAH | 49.08 | 4/24/2021 |
| AR | American | Sanya Richards - Nike | 48.70 | 9/17/2006 |
| WR | World | Marita Koch - GDR | 47.60 | 10/6/1985 |
| WQ | World Qualifier | 51.35 |
| Pl | Ln | Athlete | Time | ||
|---|---|---|---|---|---|
| 1 | 7 | Allyson FELIX Athleta |
52.30 Q | 0.207 | |
| 2 | 6 | Kennedy SIMON Texas |
52.42 Q | 0.207 | |
| 3 | 9 | Jermaisha ARNOLD Coastal Carolina |
52.57 Q | 0.380 | |
| 4 | 5 | Alexis HOLMES Kentucky |
52.68 | 0.200 | |
| 5 | 4 | Stephanie DAVIS South Carolina |
52.73 | 0.247 | |
| 6 | 8 | Moriah OLIVEIRA Miami |
53.42 | 0.285 | |
| 7 | 3 | Brittany AVENI Unattached |
53.74 | 0.251 |