Allyson Felix, Andre De Grasse star in Mannequin Challenge (video)
The most decorated Olympian version yet of the Mannequin Challenge is out.
Allyson Felix and Andre De Grasse, who between them own 12 Olympic sprint medals, joined in on the viral craze with University of Southern California track and field athletes.
Felix, 30, graduated from USC but never competed for the Trojans because she turned professional before college.
The Canadian De Grasse, 22, competed one season for USC before turning pro. He swept the NCAA 100m and 200m titles in 2015 and then took bronze and silver, respectively, in the 100m and 200m in Rio.