Patrick Mahomes's Chiefs outduel Josh Allen's Bills in an instant classic - Sports Illustrated
Patrick Mahomes goes 'Grim Reaper' as Kansas City Chiefs defeat the Buffalo Bills in epic back-and-forth overtime battle, National Sports
Chiefs beat Bills in OT in playoff game
13 seconds and The Grim Reaper: More Mahomes Magic Leads Chiefs to AFC Title Game - Chiefs Digest
2021 AFC Divisional playoff game (Buffalo–Kansas City) - Wikipedia
Chiefs rally past Buffalo 42-36 in OT in wild playoff game, Sports
Chiefs rally past Buffalo 42-36 in OT in wild playoff game
Again?! Bills can't stop Chiefs with 16 seconds left either, apparently
Kansas City advances to 4th consecutive AFC title game with thrilling OT win over Bills