Roman Bravo-Young and Carter Starocci will serve as the Nittany Lions' top-seeded competitors in Tulsa.
Hat tricks from Kristin O'Neill and Meghan Murray weren't enough for Penn State to overcome Vanderbilt on the road.
After conceding seven runs in the fourth inning, the Nittany Lions couldn't make up the deficit manufactured by the Tar Heels.
The move to the Air Force Academy is Stubblefield's 12th in 16 years.
Earl Houser Jr., a collection maintenance supervisor, unexpectedly passed away on Friday, March 3, after suffering a heart attack at work.
"We're playing our best ball right now, and this is what we've been aiming for all season. Let's go have fun."