Unlike the other athletes mentioned, Azarenka has yet to sing or rap. Yet, that is. Her trademark grunts are featured on boyfriend Redfoo's a href=http://www.youtube.com/watch?v=-fg99A6-bFY target=_blank Heart of a Champion /a single from 2013. It seems music fans feel the same way as opponents do about the noise -- it failed to chart or gain much traction. (Photo: Lucas Dawson/Getty Images)
{"Image Copyright": "2013 Getty Images"}