Although there were a few upsets, the top dogs hung around and survived. Now, the fun begins.
The Nittany Lions defeated Cornell 12-3 and Rider 2-1 in extra innings.
Penn State needed to use eight pitchers to escape a 12-0 loss to Milwaukee on Sunday.
Pitcher Bailey Parshall had herself a weekend by earning two wins and passing 500 career strikeouts.
Penn State's relievers tossed 5.2 innings of three-hit baseball to guide the Nittany Lions to another win.
A last-minute goal gave Princeton the lead with 30 seconds left in the fourth quarter.