The Boston Celtics were at acceptance by the time they left Madison Square Garden on Friday night. A 119-81 drubbing by the New York Knicks ended the teams' Eastern Conference semifinal series in six games and the Celtics' time as NBA champions with a finality. Losing to the Knicks feels like death. You have to tip your hat off to the Knicks," Celtics coach Joe Mazzulla said. You're never going to have the exact same team again," Celtics guard Derrick White said.