The AFC had a major shake-up after the thrilling Week 11 slate, even if not much changed in the standings. The Kansas City Chiefs are no longer the lone unbeaten, as the Buffalo Bills own the head-to-head tiebreaker over them for home-field advantage in the playoffs.

On Sunday, the Buffalo Bills defeated the Kansas City Chiefs, 30–21, finally giving the two-time defending champions their first loss of the season.

It’s not exactly where the 49ers wanted to be, but winning in Week 10 put them in position to make a run, and gave themselves a little bit of margin for error if they drop one of their upcoming games against the Seahawks, Packers or Bills.