The AP reports: Rajon Rondo had 23 points and seven assists before sitting out the fourth quarter with the rest of the starters, and Boston opened a 30-point lead before coasting to a 104-87 victory over the Phoenix Suns on Monday night. The Celtics have won five straight since a 2-7 slump that was the worst stretch of the new Big Three era. “I don’t think this is a team that will get shaken or rattled when we go through a struggle,” said Paul Pierce, who had 12 points, eight rebounds and eight assists… Pierce scored all of his points by halftime to help Boston take a 64-34 lead. Ray Allen scored 20, and Kevin Garnett had 16 points with eight rebounds… Shaquille O’Neal scored 16 with 11 rebounds for Phoenix, which had won seven of its last 10. Amare Stoudemire, the Suns’ leading scorer this season, had just three points on 0-for-7 shooting.