The 2005 NBA Finals was the championship round of the National Basketball Association (NBA)'s 2004–05 season, and the culmination of the season's playoffs. The Western Conference champion San Antonio Spurs played the defending NBA champion and Eastern Conference champion Detroit Pistons for the title, with the Spurs holding home court advantage and the Pistons as defending champions. The series was played under a best-of-seven format. (Unlike the previous three rounds, the team with home court advantage hosted games one, two, six, and seven if all were necessary). It also marked the Pistons first NBA Finals loss to a team other than the Lakers since 1988.