The unknown world of women's tackle football

While most people have never heard of women's tackle football, The New York Sharks are just one of the 60 teams in the Women's Professional

While most people have never heard of women's tackle football, The New York Sharks are just one of the 60 teams in the Women's Professional Alliance. SI.com's Maggie Gray follows the journey of the female football team and its owner Andra Douglas during her final game.