During his postgame press conference, Chiefs QB Patrick Mahomes reacted to the unreviewable intentional grounding call vs. Bills | @EdEastonJr

Kansas City Chiefs quarterback Patrick Mahomes accidentlly hit a cameraman with an errant pass in Sunday's loss to the Bills.

Whatever happened to the Kansas City Chiefs winning the close ones? That’s now four straight one-possession L’s.

Meanwhile, Josh Allen led Buffalo with a near-flawless performance, completing 23 of 26 passes for 273 yards and a touchdown while adding two rushing scores. The Bills capitalized on all three red-zone trips, snapping Kansas City’s three-game win streak and reigniting discussion about Mahomes’ approach near the goal line.

Officials are humans, but what frustrated the Chiefs most on Sunday was a missed call subjected to those dreaded two words, not reviewable.

When he broke the huddle, Patrick Mahomes never once turned his head to the left. Rashee Rice lined up there, one-on-one with Raiders cornerback Kyu Blue Kelly, and Mahomes didn't want to give away whatever was running through his head.

Patrick Mahomes expressed frustration with officials after the Chiefs' 28-21 loss to the Buffalo Bills as Kansas City fell to 5-4 and outside the AFC playoff picture for the first

It was certainly a game to remember for Mahomes. After all, he also made history in the process, as he surpassed the legendary Peyton Manning for the most wins by a QB aged 30 or younger. The victory against the Raiders was Mahomes’ 93rd win.

In total, the Chiefs had three penalties for 25 yards and the Bills had four penalties for 40 yards, and there were just a handful of calls—and non-calls—that stood out from the Bills' big win. Here are the five most controversial decisions the refs made in the Chiefs-Bills game:

NFL legend Torry Holt shares his thoughts on Patrick Mahomes and Josh Allen prior to the Week 9 Chiefs-Bills game.