"He's an incredibly valuable piece of what we are doing here."
Mesenbrink is one of six undefeated Penn State wrestlers in the lineup.
Barlett notched wins over Iowa's Real Woods and Rutgers' Max Hermes.
Three Penn State wrestlers achieved bonus point victories, including two pins.
The win gave Cael Sanderson his 200th as the head coach of the Nittany Lions.
"Things come and go, and I am still on that track. The plan is to get a little better at it and keep controlling my thoughts."