Tony Allen scored a season-high 15 points to help his current team beat his old one. Then he went down the sideline trading fist-bumps and hugs with his former teammates and coaches. Mike Conley had 23 points and nine assists, and Allen had nine points and four of his five rebounds in the second half on Wednesday night to lead the Memphis Grizzlies to a 93-83 victory over the Boston Celtics. It was the fourth consecutive loss for Boston, which won its 17th NBA title with Allen in 2008.