On March 28, 2008, Allen was honored as the 3rd best of the 20 greatest players in franchise history during Milwaukee's "40th Anniversary Team Celebration", but could not attend the festivities because of the Celtics' game against the New Orleans Hornets. The Boston Celtics finished 66–16, and were the #1 seed in the 2008 NBA Playoffs. The Celtics struggled in the first two rounds of the playoffs, losing every single away game, but maintaining an undefeated playoff record at home. The Celtics had defeated the #8 seeded Atlanta Hawks 4–3 and then defeated the #4 seeded Cleveland Cavaliers 4–3 as well. They advanced to the 2008 NBA Finals after a 4–2 Conference Finals series win over the Detroit Pistons.