BOSTON -- Paul Pierce had never gone scoreless in a game at TD Garden during his 18-year NBA career. And he wasn't about to let that change during his final visit to Boston. After getting subbed back in to a raucous ovation with 19.8 seconds remaining in the fourth quarter, Pierce hit a 3-pointer over Isaiah Thomas as Boston fans went delirious for a storybook ending to Pierce's last game at the Garden. The Celtics emerged with a 107-102 triumph. "I'm glad I ended it that way," said Pierce, who had been on the bench after playing the first five minutes as a starter. "At least I can say I put one last bucket in." Clippers coach Doc Rivers, who did his best to ignore the Garden fans that chanted relentlessly for Pierce's return throughout the second half, could only marvel at the finish. "That only happens here [in Boston]," said Rivers. "For Paul, that was perfect." Pierce, 39, has said he will retire after the season. He hadn't played since Dec. 31 and has...