By John Keegan and Edmund BoysFrom Clinton Administration officials in “The West Wing” to SNL staffers in “Studio 60”, Aaron Sorkin’s behind-the-scenes dramas have long inspired parlor games about who his characters are based on. I’ve never found the game particularly relevant, given the alternate Sorkin-verse he creates around them. However, the show that cleaved closest to our reality, and the most relevant predecessor to “The Newsroom”, was “Sports Night,” with Casey McCall and Dan Rydell seen as stand-ins for SportsCenter’s Dan Patrick and Keith Olbermann.