The Pistons-Celtics Rivalry or Celtics-Pistons rivalry refers to the rivalry between two teams in the National Basketball Association's Eastern Conference, the Detroit Pistons and the Boston Celtics. The rivalry peaked in the late 1980s, featuring players such as Larry Bird, Kevin McHale, Robert Parish, Isiah Thomas, and Joe Dumars. These teams met in the NBA Playoffs five times in seven seasons from 1985–1991, with the Celtics winning in 1985 and 1987, and the Pistons coming out on top in 1988, 1989, and 1991.