Coming off a wild 21-point comeback victory over Minnesota, Northwestern’s biggest challenge of the season is headed to Evanston — No. 6 Penn State. Leading the all time series 15-5 against the ‘Cats, the Nittany Lions come to Ryan Field hot off the heels of a 31-0 win over Iowa last weekend. Facing a team with College Football Playoff aspirations, David Braun’s Northwestern squad will be amped for the opportunity to play the role of underdogs. Here’s why Northwestern will shock college football Saturday, and why it’ll be the next victim of Penn State’s perfect start to the season.