Ben Roethlisberger warned the Pittsburgh Steelers must "look in the mirror" after they were beaten 26-15 by the Buffalo Bills.

The Steelers were unable to clinch a first NFL playoff place since 2017 at Bills Stadium on Sunday as they slumped to a second defeat in the space of six days.

Injury-hit Pittsburgh were unbeaten before facing the Washington Football Team last Monday and are now 11-2 and facing doubts over whether they can win the AFC North.

Quarterback Roethlisberger, who was 21 of 37 for 187 yards with two scores and two interceptions in the loss to the Bills, says the Steelers need to raise their game and knows he has to step it up.

He said: "We've lost two. We're facing some adversity. We're not hitting the panic button. Offensively, we're not very good. Right now, we're not playing good football and that starts with me.

"So we all need to look in the mirror. It starts with me and understand that we all need to be better. I think that we will be.

"I think this is a team that's got a lot of resilience and that is resilient and understands what it takes to win football games and understands what time of year it is and that the way that we're playing right now is unacceptable."

Roethlisberger expects the Steelers to regroup before locking horns with the Cincinnati Bengals next Monday.

"Defenses can play pass if you can't run the ball," he added: "We need to do better at being a more balanced offense and we need to do better at executing the plays that are called.

"We have to find a way to collect ourselves and make sufficient plays, but we didn't. We accept responsibility for that and get ready for our next opportunity."