Michigan State is on a 10-0 run and is poised to make the game ugly in the first half.
A 3-pointer from Matt McQuaid capped the run, making it 28-13 with 8:16 left in the half.
Nick Ward leads the Spartans with nine points, while Jeremy Langford has seven.
MSU opens up lead in 1H
Michigan State has opened up a 10-point lead over Penn State at the third media timeout of the first half.
Alvin Ellis made a layup with 11:13 left, making Michigan State's lead 18-8.
After the second media timeout, Penn State's Tony Carr made one of two free throws, cutting Michigan State's lead to 14-6 with 12:52 left in the half.