With script flipped, Celtics hope to close out Pacers in Game 4

A year ago, the Boston Celtics found themselves in a 3-0 hole in the Eastern Conference finals -- only to then win three straight games, and nearly pull off a historic comeback. "The numbers are literally flipped," Celtics coach Joe Mazzulla said, when asked about what he and the Celtics can take away from last year's experience this year.