Sienna knows a thing or two about winning. She is the current Knockouts Champion, and has a career filled with victories against formidable opponents including Gail Kim and Rosemary, just to name a few. This NFL Season, she is rooting for her hometown team, the Detroit Lions. Will her winning record rub off on the Lions this season?
Check out an exclusive photo gallery and a behind-the-scenes look at her NFL photo shoot here!