2016 Olympics, track and field results: Allyson Felix wins 6th gold medal with 4x400 relay win
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.
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Rio Olympics: Allyson Felix upset by Bahamas' Shaunae Miller in women's 400 meters – Orange County Register
Olympic sprinter Allyson Felix breaks Usain Bolt's world record just 10 months after giving birth
Rio Olympics 2016: Allyson Felix takes her place among all-time track greats
The Latest: US women win 4x400 relay, Felix's 6th gold
14) Allyson Felix becomes most decorated US track and field athlete in Olympics history
Olympics Rio 2016: Allyson Felix wins sixth gold as US win 4x400m relay, GB take bronze - Eurosport
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Allyson Felix wins first gold medal - and 12th world title overall - less than a year after becoming a mother
U.S. women win 4x400, and Allyson Felix becomes the most-decorated U.S. track athlete
Allyson Felix caps final World Championships appearance with 4×400 mixed relay bronze – Orange County Register
Women's 200 Meters: Allyson Felix Misses the Team
Sprint legend Felix, leaving a legacy on and off the track, FEATURE
9) USA cruises to gold in men's 4x400m relay