Generation of Seahawks By jenngay1816 Sep 12, 1976 First game The Washington Seattle Seahawks first game was September 12 1976 they were defeated by the St.Louis Cardinals 30-24 Feb 2, 2014 Super bowl win On February 2 2014 the Seahawks defeated Denver 43-8 Feb 1, 2015 Lost to New England Seattle lost to New England in the super bowl in 2015 28-24