Kyrie Irving wasn't known as a pass-first point guard when he played with Lebron James In Cleveland. He didn't have to be. He and Lebron supplied a huge portion of Cleveland's offense. Different story with Boston.
Over his last three games, Kyrie is averaging 11.3 assists per game to lead the League for that span. He is still scoring at a high level (6th in NBA for past three games), but he has made it a mission to get the ball to his teammates at the right time and place.