The Kansas City Chiefs were defeated yet again by the Buffalo Bills in Week 9 by a score of 28-21. It's now the fifth consecutive regular season win the Bills have had over the Chiefs. The story of the game was the unusual performance from Chiefs quarterback Patrick Mahomes. Mahomes had his worst game not just of the season, but in recent memory.

Typically, you know what you’re going to get from Mahomes: at least 250 passing yards and a few touchdowns on high efficiency. He’s one of, if not the, most consistent quarterbacks in the league, but he had a rare poor performance against the AFC powerhouse in Buffalo.

Mahomes finished with 250 passing yards and one interception, failing to score a single touchdown, making it just the 10th time in Mahomes' nine-year career to not do so. The lack of a touchdown wasn’t even the biggest story of the game in Week 9, however. Mahomes completed just 15 of his 34 attempts against the Bills for a percentage of 44.1, the lowest of his career.

It simply didn’t look like a Patrick Mahomes performance. Just as the Chiefs were looking to be right back on track for a Super Bowl push, the doubts have come swirling back in with force. In a recent article, Brent Sobleski of Bleacher Report graded Mahomes’ performance as an ‘F’. Having an ‘F’ next to Mahomes' name doesn’t seem right, but it may have been deserved.

“By Patrick Mahomes' lofty standards, Sunday's performance against the Buffalo Bills was as bad as any seen during his NFL career,” Sobleski wrote. “He was flustered by Buffalo's pressure packages by completing only three of 16 passes when pressured, according to NFL Next Gen Stats.”

Mahomes didn’t have a multi-turnover game or was held to around 100 passing yards like you’d expect from somebody who was graded an ‘F’, but it absolutely was an ‘F’ grade for his standards. In a high-stakes match-up that would’ve proved that Kansas City was officially back, Mahomes and the offense dropped the ball.

They converted on just three of 13 third-down attempts on the night. They were out-possessed by about 10 minutes. Mahomes and Kansas City just didn’t have it when it mattered the most, evident by Mahomes' fourth-quarter interception just as a comeback seemed possible.

Now, the Chiefs sit at a modest 5-4 on the season, only enough for third place in the AFC West division. The road back to the Super Bowl, let alone the playoffs, looks a lot more difficult for Kansas City now. With an unforgiving schedule ahead, the Chiefs need to forget their Week 9 performance now and get back into the mindset they were in just a couple of weeks ago.