Gold medalist Claressa Shields of the United participates in the medals ceremony after their women's final middleweight 75-kg gold medal boxing match at the 2012 Summer Olympics, Thursday, Aug. 9, 2012, in London. (AP Photo/Ivan Sekretarev)

Photo by: Ivan Sekretarev

Gold medalist Claressa Shields of the United participates in the medals ceremony after their women's final middleweight 75-kg gold medal boxing match at the 2012 Summer Olympics, Thursday, Aug. 9, 2012, in London. (AP Photo/Ivan Sekretarev)