The Boston Celtics might not be the team the Indiana Pacers want to see in the first round of next month’s playoffs. Coach Doc Rivers’ squad came into Bankers Life Fieldhouse and won its second consecutive game over the team that’s now third in the Eastern Conference. Boston scored the game’s final 11 points Wednesday night for an 83-81 victory. The Celtics beat the Pacers by 19 points on Jan. 4. It was a game coach Frank Vogel’s team appeared to have wrapped up when it led 81-72 with 4:36 to play. Not only did Indiana not score again, it yielded a pair of easy baskets during the run, both on feeds by Kevin Garnett from the perimeter. Avery Bradley tied the score with a basket at the rim with 1:21 to play; Jeff Green won the game with a back cut to the goal with 0.5 seconds left. The latter was particularly troubling for the league’s best defensive team. Giving its full attention to Paul Pierce, the Pacers let a double team of him get the best of them as no one accounted for Green. He actually was open a couple of ticks before Garnett found him.