Rest up, Rajon Rondo. The Boston Celtics showed they can still keep the ball moving even without the NBA's assist leader, getting a triple-double from Paul Pierce while holding off the Indiana Pacers 99-88 on Sunday to extend their winning streak to 13 straight. Pierce had 12 assists and Ray Allen added six more as the Celtics played their second straight game without Rondo, who is out for a couple of weeks with a sprained left ankle. "That's the point we make with this team. When the ball moves, there's assists," coach Doc Rivers said. "Guys are going to get assists and they're getting that." Read more: http://sports.espn.go.com/nba/recap?gameId=301219002