Ohio Northern will host the 38th annual ONU Wrestling Invitational on Saturday at the ONU Sports Center Fieldhouse ... 12 schools are expected to join ONU in the tournament, which will be a flighted, double-elimination event with the standard 10 NCAA weight classes ... NCAA Division III schools Adrian (Mich.), Alma (Mich.), Heidelberg, Mount Saint Joseph, Muskingum, Ohio Wesleyan, Otterbein, Thomas More (Ky.), Trine (Ind.), Washington & Lee (Va.) and Wilmington and NCAA Division II foe Tiffin are expected to join Ohio Northern at the event.