| Order / Lane | ATHLETE | COUNTRY | PB | SB 2010 |
|---|---|---|---|---|
| Natasha Hastings |
USA
|
49.84 | 50.53 | |
| Novlene Williams-Mills |
JAM
|
49.63 | 50.04 | |
| Nicola Sanders |
GBR
|
49.65 | 52.70 | |
| Amantle MONTSHO |
BOT
|
49.54 | 49.89 | |
| Denisa Rosolová |
CZE
|
50.84 | 50.85 | |
| Debbie Dunn |
USA
|
49.64 | 49.64 | |
| Shana Cox |
USA
|
50.84 | 51.42 | |
| Shericka Williams |
JAM
|
49.32 | 50.04 |