Sean Harvey led the way for the Nittany Lions with 12 kills, and Ryan Merk had a game-high 10 digs.
Penn State has knocked off two top-ten-ranked teams in only six games. The downside is they have also dropped two losses to unranked teams. They eye their third top-ten matchup this weekend in Charlotte.
Walker signed a one-year deal worth a maximum of $10 million.
Laubach and Cerrato combined to win just 11/30 face-offs in the game.
Penn State's pitching allowed 13 runs on 19 hits to Iowa's offense.
The Nittany Lions will host Wisconsin in the program's first Frozen Four appearance.
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