As president of HBO Sports, Ross Greenburg, winner of 51 Emmys and eight Peabody awards and a driving force behind the network's innovative sports programming. Greenburg, 56, who joined HBO as a production assistant in 1978 and became an executive producer in '85, launched such landmark franchises as Real Sports, 24/7 and Hard Knocks, and oversaw production of numerous documentaries. In announcing his departure, Greenburg cited fatigue from dealing with the business of boxing, long the showcase sport of HBO but an increasingly embattled area for the network, especially after it lost the May 7 Manny Pacquiao--Shane Mosley fight to Showtime. "I felt at times like a ticket agent at an airport, and all the flights were canceled," he said of the struggle to make top matches. Greenburg, who says that he walks away after his 33 years at HBO having "accomplished everything I hoped for," plans to continue developing sports programming, including documentaries.