what year did detroit pistons win the championship?
1990 NBA Finals 2004 NBA Finals 1989 NBA Finals
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 The city has been home to other professional sports franchises , including the National Basketball Association 's Fort Wayne Pistons ( which moved to Detroit , Michigan in 1957 ) , the Fort Wayne Daisies of the All @-@ American Girls Professional Baseball League , and the Fort Wayne Kekiongas of the National Association of Professional Base Ball Players ( precursor to Major League Baseball ) . 

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 In February 1966 , the governors met and awarded franchises to Los Angeles , Minnesota , Philadelphia , Pittsburgh , San Francisco and St. Louis . The league rejected bids from Baltimore , Buffalo and Vancouver . The six winning bids each paid $ 2 million for their franchises . St. Louis was awarded a franchise with no bid received . The league 's decision to grant a franchise was contingent on a potential owner stepping forward - a decision influenced by the Norris and Wirtz families , who owned the St. Louis Arena . 

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 From the league 's founding in 1920 until 1932 , there was no scheduled championship game . From 1920 – 1923 , the championship was awarded to a team by a vote of team owners at the annual owners ' meeting . From 1924 – 1932 , the team having the best winning percentage was awarded the championship . As each team played a different number of games , simply counting wins and losses would have been insufficient . Additionally , tie games were not counted in the standings in figuring winning percentage ( under modern rules , ties count as ½ win and ½ loss ) . 

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 On January 25 , 2006 , the United States Senate bestowed another honor on the team when Senator Kay Bailey Hutchison presented Senate Resolution 352 commending the team for winning their fourth national championship . 

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 Winning 52 games , the Pistons comfortably entered the 1987 NBA Playoffs . They swept the Washington Bullets and soundly beat the Atlanta Hawks in five games , but bowed out in seven matches against the archrival Boston Celtics in what was called one of the physically and mentally toughest series ever . Rodman feuded with Celtics guard Dennis Johnson and taunted Johnson in the closing seconds when he waved his right hand over his own head . When the Celtics took Game Seven , Johnson went back at Rodman in the last moments of the game and mimicked his taunting gesture . 
