the visiting baseball team's dugout, which was filled with pads for safety, and required a special ground rule that sliced off that corner of the end zone. The end zone was also shorter than the north, as the south end zone was eight yards, compared to the regulation ten yards. One corner of the north end line ran just inches short of the left field wall. There is a legend that Bears fullback Bronko Nagurski steamrolled through the line head down, and ran all the way through that end zone, smacking his leather-helmeted head on the bricks. He went back to the bench and told then-coach George Halas, "That last guy gave me quite a lick!" That kind of incident prompted the Bears to hang some padding in front of the wall. The Bears are second only to the Packers in total NFL championships, and all but one of those (their only Super Bowl championship) came during their tenure at Wrigley. After a half-century, they found themselves compelled to move as the NFL wanted every one of its stadiums to seat at least 50,000 as a result of the then-recent AFL–NFL merger. The Bears held one game at Dyche Stadium (now Ryan Field) on the Northwestern University campus in 1970, but otherwise continued at Wrigley until their transfer to the lakefront ended their five-decades run on the north side. One remnant of the Bears' time at Wrigley was uncovered during the offseason rebuilding of the playing field between 2007 and 2008: the foundations for the goal posts. Five NFL championship games were played at Wrigley Field: 1933, 1937, 1941, 1943, and 1963. Coupled with the Chicago Bears, the Chicago Cardinals (now the Arizona Cardinals) of the NFL called Wrigley Field home from 1931 to 1938. Born on the South Side of Chicago, the Cardinals also played their home games at Normal Park, Comiskey Park, and Soldier Field. The Northwestern Wildcats and the Illinois Fighting Illini played a college football game at Wrigley Field on November 20, 2010. It was the first football game at Wrigley Field since 1970, and the first collegiate football game there since 1938, when the DePaul Blue Demons played its regular games at Wrigley. The field used an east–west field configuration (third base to right field). In order to keep the playing field at regulation size, the safety clearances for each end zone to the walls