By Daniel Chavkin Old Dominion, Marshall and Southern Miss all officially announced they will leave C-USA for the Sun Belt in June of this year. View the original article to see embedded media. Old Dominion, Marshall and Southern Miss all announced they plan on ending their alliance with Conference USA in June 2022, in anticipation of a move to the Sun Belt Conference. Sports Illustrated’s Ross Dellenger reports that this decision comes as C-USA included all three schools as part of their official 2022 football schedule that was released earlier this afternoon. Meanwhile, Dellenger explained t…