As of the 2011 season, it was September 15, 2002 when they lost to the Oakland Raiders, 30-17.
On Aug. 31, 1997, the Cowboys defeated the Steelers 37-7 at Pittsburgh's Three Rivers Stadium as Troy Aikman threw four touchdown passes. It was the season opener for both teams.
The Seahawks last beat the Steelers in 2003.
November 17, 1991 was the last time the Washington Redskins defeated the Pittsburgh Steelers.
Pittsburgh Steelers
2011
The last time the Oakland Raiders beat the Steelers was on December 6, 2009 at Heinz Field in Pittsburgh.
January 8, 1994 over the Pittsburgh Steelers, 27-24, in overtime.
pittsburgh steelers
1987
The last time the Steelers lost in 2012 was to the Baltimore Ravens on November 18th.
The last time the Baltimore Ravens lost at home was on December 5, 2010. They were defeated by the Pittsburgh Steelers, 13-10.
2003: The Pittsburgh Steelers beat them 36 - 33.