Petersen spent nearly 20 years at Penn State.
After rising to No. 8 during holiday break, a split with RIT drops the Nittany Lions back to No. 9.
Jarod Crespo's hat trick earned a split for the Nittany Lions to start the second half of their season.
He was released from his signing with Iowa State.
Hansen ran for 952 yards in the 2025 season.
Shanahan Jr. will follow former offensive line coach Phil Trautwein to Gainesville.