Detroit Pistons Tayshaun Prince (R) passes under pressure from Boston Celtics defenders Kendrick Perkins (L) and James Posey in the second quarter during Game 4 of the NBA Eastern Conference Finals in Auburn Hills, Michigan, May 26, 2008.(Xinhua/Reuters Photo)

Boston Celtics head coach Doc Rivers and guard Ray Allen speak on the sideline as their team met the Detroit Pistons in the second quarter during Game 4 of the NBA Eastern Conference Finals in Auburn Hills, Michigan, May 26, 2008.(Xinhua/Reuters Photo)