On SI Now, host Maggie Gray welcomes Baltimore Ravens running back Buck Allen, 1984 Olympic gold-medal gymnast Mary Lou Retton, U.S. women's rugby team members Jillion Potter and Kelly Griffin and boxing commentator Teddy Atlas.

August 17, 2016

On SI Now, host Maggie Gray welcomes Baltimore Ravens running back Buck Allen, 1984 Olympic gold-medal gymnast Mary Lou Retton, U.S. women's rugby team members Jillion Potter and Kelly Griffin and boxing commentator Teddy Atlas.

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