James Blake, ranked as high as World No. 4 during his professional tennis career, is a tennis commentator for ESPN, Tennis Channel, NBC and CNN and serves as the tournament director for the ATP + WTA Miami Open. Since his playing days, he has been involved in philanthropy, including founding the Thomas Blake Sr. Memorial Cancer Research Fund at Memorial Sloan-Kettering Cancer Center in memory of his father. His memoir, Breaking Back, was a New York Times Best Seller.