San Francisco coach Jim Harbaugh sought out Chiefs quarterback Alex Smith on Friday night, warmly greeting him on the field before their preseason game.Kansas City Chiefs coach Andy Reid calls a play during the first half of an preseason NFL football game against the San Francisco 49ers at Arrowhead Stadium in Kansas City, Mo., Friday, Aug. 16, 2013.San Francisco 49ers coach Jim Harbaugh, right, listens to side judge Ed Bonet during the first half of an preseason NFL football game against the Kansas City Chiefs at Arrowhead Stadium in Kansas City, Mo., Friday, Aug. 16, 2013.Kansas City Chiefs quarterback Alex Smith (11) throws a pass during the first half of a preseason NFL football game against the San Francisco 49ers, Friday, Aug. 16, 2013, in Kansas City, Mo.Kansas City Chiefs running back Knile Davis (34) makes a move before being tackled by San Francisco 49ers linebacker Dan Skuta (51) during the first half of an preseason NFL football game at Arrowhead Stadium in Kansas City, Mo., Friday, Aug. 16, 2013.