The Celtics opened their quest for Banner 18 with a dramatic 95-89 win over the Cleveland Cavaliers. The big difference in this game was the Celtics bench. They turned a double-digit deficit into a 6-point halftime lead. Paul Pierce (23 points, 11 rebounds) was clutch in the fourth quarter (10 points), nailing an 18-footer with a minute left to give the Cs a six point lead.Other observations:The Cavaliers started strong...building a 13-2 lead.Celtics second unit played strong in the 2nd qua...