ORCHARD PARK, N.Y. (AP) — Josh Allen ran for a 26-yard touchdown on fourth down with 2:17 left, sealing the Buffalo Bills’ 30-21 win over the Kansas City Chiefs and handing the two-time defending Super Bowl champions their first loss of the season. James Cook rushed for two touchdowns and Allen threw a 12-yard TD pass to Curtis Samuel for Buffalo. The Bills moved to 9-2 and closed the gap on the 9-1 Chiefs in the race for the AFC’s top seed. Patrick Mahomes and Chiefs were the NFL’s last undefeated team. They had won 15 straight, including playoffs, since last December. The Bills have won six straight.