The Wildcats were driving, but a Treyvon Green fumble inside the five gave MSU the momentum, and Kirk Cousins was able to exploit the NU secondary, especially redshirt freshman Daniel Jones, who is in for injured Jordan Mabin. Mabin's return is questionable.
The NU offense has moved the ball well, but it was killed by a botched snap in MSU territory and Green's fumble.
Running back Jacob Schmidt has played well today, but Michigan State's Le'Veon Bell has been even more impressive, running very physically and picking up a touchdown.
Big plays have hurt Northwestern all season, and they've come back to bite the Cats again in the first half today.