| Womens 400 Meter Dash Sr | Semi-Final |
|---|
|
| Record | Time |
Athlete |
Affiliation |
Date |
| World | 47.60 |
Marita Koch |
GDR |
October 6 1985 |
| American | 48.70 |
Sanya Richards |
Nike |
September 17 2006 |
| Lane |
Athlete Name |
Affiliation |
|---|
| 1 | Ebony Collins | Nike |
| 2 | Alycia Williams | unattached |
| 3 | Shana Cox | adidas |
| 4 | Debbie Dunn | Nike |
| 5 | Francena McCorory | adidas |
| 6 | DeeDee Trotter | Saucony |
| 7 | Ciara Short | Cal State Fullerton |
| 8 | Leslie Cole | Nike |
| Lane |
Athlete Name |
Affiliation |
|---|
| 1 | Sharay Hale | Columbia |
| 2 | Mary Wineberg | unattached |
| 3 | Monica Hargrove | Under Armour |
| 4 | Natasha Hastings | Nike |
| 5 | Sanya Richards-Ross | Nike |
| 6 | Angee Henry | Team Nebraska-Brooks |
| 7 | Brandi Cross | South Carolina |
| 8 | Shelise Williams | Arkansas |
|
