| Order / Lane | Bib | ATHLETE | COUNTRY | PB | SB 2021 |
|---|---|---|---|---|---|
| 2 | 3853 | Quanera HAYES |
USA
|
49.72 | 49.78 |
| 3 | 1583 | Roxana GÓMEZ |
CUB
|
49.71 | 49.71 |
| 4 | 2501 | Candice MCLEOD |
JAM
|
49.51 | 49.51 |
| 5 | 1684 | Marileidy PAULINO |
DOM
|
49.38 | 49.38 |
| 6 | 2502 | Stephenie Ann MCPHERSON |
JAM
|
49.34 | 49.34 |
| 7 | 1131 | Shaunae MILLER-UIBO |
BAH
|
48.37 | 49.08 |
| 8 | 2033 | Jodie WILLIAMS |
GBR
|
49.97 | 49.97 |
| 9 | 3847 | Allyson FELIX |
USA
|
49.26 | 49.89 |