Before halftime, Boston and the Clippers already had combined for five technical fouls, plenty of rough contact, a few icy staredowns and a running dialogue of trash talk. The Celtics feel right at home in such ugly situations, and they rallied for a win that slowed their road woes. Paul Pierce scored 10 of his 25 points in the fourth quarter, Kevin Garnett added 21 points and eight rebounds, and the Celtics made an impressive late rally for a 94-85 victory over Los Angeles on Monday night.