Celtics use late rally to oust Hawks, setting up showdown with Sixers

• Celtics pull away, beat Hawks 128-120 for 4-2 series win
• Boston advance to face Philadelphia in East semi-finals

Al Horford hit a huge three-pointer against his former team and the Boston Celtics broke open a tight game in the closing minutes to finish off the Atlanta Hawks 128-120 on Thursday night for a 4-2 victory in the opening-round playoff series.

The second-seeded Celtics advance to face the third-seeded Philadelphia 76ers, who've been resting since completing their four-game sweep of Brooklyn last Saturday.