The Nittany Lions are now 2-0 against their in-state rival this season.
Grate Chee initially closed when the pandemic hit in 2020 and hadn't reopened until now.
Sessoms has one year of eligibility remaining following an inconsistent 2021-22 campaign with Penn State.
Nassib will be designated a post-June 1 release but will be able to search for a new team immediately.
Sandy Barbour, Penn State's vice president for intercollegiate athletics, will officially retire this summer, according to the university.
"The nationals are always really what we focus on, and our guys know that."