When Melanie Oudin was diagnosed with arrhythmia last November, her first reaction was one of relief. Relief at finally knowing why her heart would sometimes accelerate out of control for hours at ...

native Melanie Oudin is enjoying a career-high ranking of ... with her upset win over Jankovic at Wimbledon. (Ian Walton/Getty Images)Do you feel like U.S. tennis fans are looking at you thinking ...