Solid goaltending and a dangerous offense paved the way to a stunner in Allentown.
A four-run fifth inning for Michigan State was too much for Penn State to overcome.
The Nittany Lions had just three hits.
Both teams traded leads throughout the game.
JJ Wiebusch completed a hat trick in the win.
The Nittany Lions begin the Big Ten Tournament in Ann Arbor this weekend, but plenty can be done to secure a win.