FILE – In this Aug. 24, 2019, file photo, the Kansas City Chiefs and the San Francisco 49ers play during the second half of an NFL preseason football game at Arrowhead Stadium in Kansas City, Mo. The Chiefs will open defense of their Super Bowl championship by hosting Houston on Sept. 10 in the NFL’s annual kickoff game — pending developments in the coronavirus pandemic, of course. (AP Photo/Charlie Riedel, File)