The 1990 NBA Finals was the championship series of the National Basketball Association's (NBA) 1989–90 season, and the conclusion of the season's playoffs. The series pitted the defending NBA champion and Eastern Conference champion Detroit Pistons against the Western Conference champion Portland Trail Blazers. The Pistons defeated the Trail Blazers in five games to repeat as NBA champions. Won the 1990 NBA Finals on June 14, 1990. Wiki link