The conference on Monday made Monheim the first Illini this season to win any of the conference's weekly awards.
Monheim had a game-high 11 tackles against Penn State and forced a fumble. The Orville, Ohio, native is Illinois' third leading tackler this season with 28. That's No. 1 among Big Ten freshmen.
Penn State linebacker Michael Mauti's game-changing performance against Illinois (2-3, 0-1) earned him the defensive player of the week.
Northwestern quarterback Kain Colter and Nebraska quarterback Taylor Martinez were offensive players of the week. Nebraska kicker and punter Brett Maher was the special teams player of the week.