The Nittany Lions will look to rebound after a disappointing season last year.
The defending champions will play 16 matches against teams that made last year's NCAA Tournament in their 30-game schedule.
Throneberry is the seventh Penn State baseball player to enter the transfer portal.
Carter’s deal is worth $45.3 million fully guaranteed.
Three Nittany Lions have been named All-Americans by three different lacrosse organizations this season.
Penn State plays No. 5 seed USC at 3 p.m. on Thursday, May 22 to finish pool play.