Eric Mangini played a critical role for the San Francisco 49ers in their Week 1 win over the Green Bay Packers.

Mangini was hired in the offseason as a consultant for the offense in dealing with opposing defenses.

“He’s been great,” Roman said of Mangini. “Very, very thorough work put in, really on us and the opponent. And he contributed to the game plan last week, as he will every week. And during the game, he’s in the booth with us, helping us upstairs, helping communicate what’s going on and what just happened or whatnot between series. So, he’s doing a great job. 

"Oh yeah, he’s part of our staff. And he’s up there, eyes on the defense, and between series we’ll get together and talk.”