Kansas City and Buffalo will meet for the seventh time in the NFL playoffs. Here are some key numbers to know.

Winning the turnover battle requires concentration, togetherness and an appreciation for the ball like no other. But it also needs luck. Buffalo appeared to have that in spades against the Chiefs; the Bills fumbled the ball four times in the AFC championship. And yet, all four miscues fell in Buffalo's grasps.

When Patrick Mahomes and the Chiefs face Josh Allen and the Bills in Sunday’s AFC Championship Game at Arrowhead Stadium, it’ll be the fourth time the quarterbacks will meet. There have been only four other instances in NFL history of quarterbacks playing four times in the postseason. Allen offered high praise this week when asked about the Chiefs.