With the addition of Johnson, head coach Mike Rhoades has snagged four transfer portal pieces since taking over the head coaching role on March 29.
The Nittany Lions will play their first match of the NCAA Tournament at 7:30 p.m. on Tuesday, May 2, at George Mason's EagleBank Arena.
Twelve runs is the largest deficit the Nittany Lions have suffered all season.
Camden will depart Happy Valley with one year of eligibility remaining.
The Nittany Lions will match up with seven teams in a home-and-home series throughout the 20-game conference season.
"Sometimes, I don't think he has a pulse, and that allows you to play well."