| Women's 400 Meter Dash (Prelim) | Heat 1 Splits |
|---|
| Place | Athlete Name | 200m | 400m | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Sanya Richards-Ross Nike | 24.13 (1) 24.13 | 51.33 (1) 27.20 | |||||||||||||
| 2 | Jessica Cousins unattached | 25.21 (4) 25.21 | 53.80 (2) 28.60 | |||||||||||||
| 3 | Tiffany Williams unattached | 24.23 (2) 24.23 | 54.27 (3) 30.05 | |||||||||||||
| 4 | Chana Vinson unattached | 24.83 (3) 24.83 | 55.55 (4) 30.73 |