ORCHARD PARK, N.Y. -- As impressive as the Buffalo Bills' defense has been this season, their offense has been inconsistent, mostly at quarterback.

Some of the heat for that has fallen on offensive coordinator Nate Hackett, but coach Doug Marrone -- who brought Hackett along from Syracuse last season -- deflected blame away from Hackett on Thursday.

"If there's any blame, it should be on me [for] anything that happens with our football team, first of all," Marrone said. "I think secondly, if it was a problem with one thing, it would be very easy to fix. It's really collective.

"And that's probably 99 percent of all the problems that occur when you're on the team. Sometimes a play will point out somebody, but at the end of the day when you're evaluating all the plays, it's just a matter of trying to get 11 guys to be [as] efficient as they can, and when everyone has a clean opportunity to get it done, does that player get it done or not, and that's how you evaluate it."

How would Marrone sum up Hackett's job as coordinator?

"Those are things that I would talk with Nathaniel about," Marrone said. "[When] we go through a process after the season, like everybody knows, we'll sit down and talk. It's been two years now. We've gone through, I don't know, how many quarterbacks that we've played. We're playing with a quarterback that wasn't in our training camp.

"I think all of those things are pretty big challenges when you're trying to get things going from an offensive standpoint."