In this Sept. 18, 2012, photo, Olympic gold medal boxer Claressa Shields runs at the Berston Field House in Flint, Mich. Her first fight since London is Thursday night at the National P

 

              In this Sept. 18, 2012, photo, Olympic gold medal boxer Claressa Shields runs at the Berston Field House in Flint, Mich. Her first fight since London is Thursday night at the National P
In this Sept. 18, 2012, photo, Olympic gold medal boxer Claressa Shields runs at the Berston Field House in Flint, Mich. Her first fight since London is Thursday night at the National PAL Championships in Toledo, Ohio. (AP Photo/Carlos Osorio)