One of the biggest stories in the NBA right now is Doc Rivers leaving the Boston Celtics to coach the Los Angeles Clippers. Not much has been made about how he left, in fact most are giving him a pass except ESPN’s Bill Simmons, a die hard Celtics fan and oddly enough a Clippers season ticket holder. Like many fans, Simmons thinks that Rivers quit on the Celtics rather than face a rebuilding phase, he still had three years left of a five-year contract he signed two years ago.