Jack Traynor tallied six goals to spur the Nittany Lions towards the win.
Barker's decision comes just one day after an official visit during the annual Blue-White Game.
Fink played for the AJHL's Brooks Bandits, where he earned league MVP honors with 46 goals and 56 assists in 54 games played this season.
The Nittany Lions blasted 21 hits throughout the three-game stretch.
The Nittany Lions dropped their third consecutive Big Ten series over the weekend.
Christ was one of two non-quarterbacks to play on both teams at the 2023 Blue-White Game.