Ashton Eaton

The title of “World’s Greatest Athlete” has been bestowed upon the Olympic decathlon champion for decades and Eaton is the greatest of all. Eaton returns to Rio as the reigning Olympic and world champion and is coming off a 2015 outdoor season in which he bested his own world record with a 9,045-point total in the 10-event discipline. Eaton could become the first back-to-back Olympic champion since Daley Thompson’s 1980-’84 double.

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