By A Mystery Man Writer
The men's and women's teams won gold in the 4x400, plus Matthew Centrowitz won the first gold for the US since 1908 in the 1500 meters.
2016 Olympics: Allyson Felix
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Images
Allyson Felix Won Bronze in the 400-Meter, Her Tenth Olympic Medal
14) Allyson Felix is now the most decorated woman in Olympic track