The Orioles' four-man rotation is set. Brian Matusz will start Saturday and Chris Tillman gets the nod for Sunday. ... Earl Weaver will throw out the ceremonial first pitch at Monday's home opener and Thurmont¿s Richard Troxell will sing the National Anthem. ... Jennifer Royle from The Fan has filed an $800,000 defamation suit against WNST owner Nestor Aparicio and two of his hosts. ... A four-member Towson entourage expects to conclude interviews at the Final Four and announce a new basketball coach next week.