Carson Wentz is the NFL's lowest-rated passer since Week 6 and the Philadelphia Eagles are working to help him change that.

After Sunday's loss to the Cincinnati Bengals, Philadelphia's sixth in their last seven games, Doug Pederson attributed the slump to mechanical flaws that many saw in Wentz at North Dakota State.

"Strictly mechanics," Pederson said. "... Young quarterback, missed quite a bit of time in the preseason, but now we have to keep cleaning this thing up."

Wentz works daily on his mechanics with offensive coordinator Frank Reich and quarterbacks coach John DeFilippo. Pederson admitted that the overhaul would be more complete if his rookie was still sitting behind a veteran quarterback.

"These are some of the decisions that I made back when the (Sam Bradford) trade was made," Pederson said. "These were going to be some of the pains we were going to have to go through, and just him understanding and him learning and us growing together as an offense, he and I growing as coach and quarterback together, it's all part of the process."