Patrick Mahomes passed for 320 yards and three touchdowns and the Kansas City Chiefs clinched homefield advantage throughout the AFC playoffs with a 29-10 victory over the host Pittsburgh Steelers on Wednesday. Travis Kelce became the third tight end in NFL history to reach 1,000 career receptions and also took over the franchise lead with his 77th career touchdown catch. Xavier Worthy and Justin Watson also caught scoring passes and Kareem Hunt rushed for a touchdown for the Chiefs (15-1) during the Christmas Day affair. Russell Wilson completed 23 of 37 passes for 205 yards and one interception as Pittsburgh (10-6) failed to clinch the AFC North for the second straight game.