The biggest game of the week on the college football slate will take place in the B1G when No. 4 Penn State travels to face No. 3 Iowa on Oct. 9 (4 p.m. EST/FOX).

Penn State is coming off a 24-0 shutout victory vs. Indiana. Iowa routed Maryland for a 51-14 blowout victory.

FOX college football analyst RJ Young broke down his keys to the Penn State-Iowa showdown. Young believes the Iowa defense will play a major role in the outcome.

The stingy Iowa defense hasn’t allowed over 17 points this season. The Iowa defense twice held opponents in single digits (vs. Indiana and Kent State).

Iowa won last season’s meeting but Penn State leads the all-time series 17-13.