Prior to re-opening his recruitment, the prospect received offers from more than a dozen other teams, including Butler, Cal, Nevada, San Diego State, and Stanford.
Before coming to Penn State, Hamilton played two seasons of major junior hockey with three different teams following two seasons at Miami (OH).
The Nittany Lions will take on the winner of Louisville-Mississippi State on Tuesday, March 27 at Madison Square Garden.
The winner of this Big Ten vs. Big East showdown will advance to the Final Four at Madison Square Garden.
Reigning Hodge Trophy winner Zain Retherford and teammate Bo Nickal were two of the four wrestlers on the ballot.
Penn State's defense and goaltending could carry the team to a national title, but overwhelmingly strong competition could doom Guy Gadowsky's Nittany Lions.