The celebration for the reigning Super Bowl champion Los Angeles Rams didn't last very long Thursday night.

The Buffalo Bills crashed the party, defeating the Rams 31-10 at SoFi Stadium.

"We weren't ready to go, I take a lot of pride in that, and that's on me," Sean McVay said. "I gotta do better, there were a lot of decisions that I made that I felt like didn't put our players in good enough spots. This was a humbling experience, but we're going to stay connected, we're going to look inward, we're going to do a better job of moving forward, but you give credit to the Bills, and then we've got to understand that we've got to have that mindset and mentality to be able to move forward accordingly."