The 1989 NBA Finals was the championship round of the 1988–89 National Basketball Association (NBA) season, and the conclusion of the 1989 NBA Playoffs. The series was a rematch of the previous year's championship round between the Eastern Conference playoff champion Detroit Pistons and the defending NBA champion and Western Conference playoff champion Los Angeles Lakers. This, along with the 1983 NBA Finals, were the only two NBA championships of the 1980s not to be won by either the Lakers or the Boston Celtics; every NBA Finals of that decade featured either the Lakers or Celtics, and sometimes both (1984, 1985, 1987). Coincidentally, the Lakers were also swept in the 1983 NBA Finals, that time by the Philadelphia 76ers.