RFK Stadium, originally D.C. Stadium, opened in 1961 as home to the NFL's Washington Redskins and was the fourth multi-sport facility designated for both baseball and football. In fact, it was the first "cookie-cutter" or "concrete donut" style stadium such that it is perfectly circular and features artifical turf that can withstand the reconfiguration of box seats when transitioning between the baseball and football playing fields. During the Redskin's thirty-five years at RFK, the Stadium hosted four NFC Championship games, three of which led to the Redskins' Super Bowl Championships in the 1982, 1987 and 1991 seasons. On December 22, 1996, the Redskins played their last game at RFK and defeated their rivals, the Dallas Cowboys, 37-10. During the halftime of this game, former Redskins players came onto the field wearing replicas of the jerseys from their eras. The next year, the Redskins moved to FedExField in Maryland and RFK Stadium is currently home to D.C. United, a Major League Soccer team.