| Title | : | Allyson Felix's sub-50 second leg helps USA advance to 4x400 finals NBC Sports |
| Duration | : | 6 minutes, 25 seconds |
| Uploader | : | NBC Sports |
| Added On: | : | 05 October, 2019 |
| Views | : | 1.5M times |
| Likes | : | 0 |
| Source | : | YouTube |
Allyson Felix delivers in the second leg to build a lead that Team USA would not relinquish en route to winning their 4x400 meter relay heat and advancing to the finals #NBCSports #AllysonFelix» Subscribe to NBC Sports httpswww.youtube.comnbcsportssub...
