Penn State won both of its consolation bouts and six second-round bouts in what was a successful Thursday night.
Grimes is now the second Class of 2022 prospect to flip from a Big Ten rival to the Nittany Lions.
Robinson's three-year deal is expected to be worth roughly $45 million with $30 million guaranteed.
After an early defeat for Drew Hildebrandt, the Nittany Lions were able to bounce back with several key victories in Thursday's opening session.
Stick with us here for live updates, analysis, and photos of every second of this weekend's action.
The program's 82 wins since 2012 are tied for the fourth most among Big Ten teams.