The Kansas City Chiefs were truly and thoroughly beaten in front of a sold-out crowd at Arrowhead Stadium in primetime fashion on Monday night. The Chiefs entered Week 5 with some concerns on both sides of the ball, and those issues were further magnified while being defeated by a healthy three scores by a unit many consider to be the biggest threat to their AFC crown.

The Buffalo Bills took advantage of a young offensive line to apply constant pressure on Patrick Mahomes despite only sending extra rushers on just one of Mahomes’ 63 dropbacks. On the other side of the ball, Josh Allen and the Bills’ receivers routinely made plays behind a struggling Chiefs secondary. Allen threw for 315 yards and three touchdowns on just 15 completions, which averages out to an astounding 21 yards per completion. The back end of Kansas City’s defense has struggled all season long, and Monday may have been their most embarrassing performance to date.

The Chiefs will now enter Week 6 at a shocking 2-3 and in last place in the AFC West. The Los Angeles Chargers are the cream of the crop at 4-1 and hold a multiple-game lead over the Chiefs for first place in the division, partially thanks to a Week 3 victory over their rivals. Knowing the expectations in Kansas City are Super Bowl or bust, it’s time to begin panicking about this year’s iteration of the Chiefs.

Kansas City’s defensive deficiencies are very real and appalling. Steve Spagnuolo is an excellent defensive coordinator but even he may not have the answers to fix what appears to be a disjointed mess.

Following Monday night’s debacle, the Chiefs are giving up the second-most yards per game (437.4), rank bottom four in passing yards allowed (296.4) and rushing yards allowed per contest (141), and are giving up the most points per game in the league at a dreadful clip of 32.6. But the stat that really brings their defensive struggles home is this one: Spagnuolo’s defense is currently allowing offenses to move the ball to the tune of 7.1 yards per play, which represents the worst mark in NFL history. Furthermore, the previous all-time high of 6.6 yards per play was set by the 2015 Saints. The Chiefs are somehow giving up half-yard per play more than the previous all-time worst unit in that category. Just which of these issues should you be concerned about? If you checked off “all of them,” you would be correct.

The great Bill Parcells once said, “You are what your record says you are.” It’s a damning statement for a 2-3 Chiefs team that currently looks far away from reaching their third straight Super Bowl.