The Nittany Lions will face Texas State at 4 p.m. on Friday.
Penn State stormed back from a 9-2 deficit to deliver a win on Senior Day.
A 10-3 Georgetown run led to the elimination of the Nittany Lions.
The Nittany Lions allowed seven runs in the eighth inning en route to the loss.
After going down 3-0 early, the Nittany Lions rallied late to keep their postseason hopes alive.
Mack reportedly entered the portal on Thursday, May 2.