Penn State trailed for all but 1:25 of Sunday's matchup at the Bryce Jordan Center.
Three second half scores and an impressive defensive effort gave the Nittany Lions the win Sunday.
Frankie Tagliaferri's attacking brilliance inspired Penn State to a two-goal overtime comeback that sealed another Big Ten Tournament title for the Nittany Lions.
Barratt flipped the puck up and batted it in on his backhand against Michigan State on Saturday night.
The Nittany Lions dropped four spots in the poll after suffering their first defeat of the 2019 season.
Jonni Parker tied her season-high of 17 kills in the 25-17, 21-25, 25-18, 25-15 victory over the Boilermakers.