Oregon State cross country and track and field head coach Kelly Sullivan announced on Wednesday the signing of three more student-athletes who will join the Beavers on campus in the fall. The group features distance runner Monica Anderson (Marist Catholic High School; Eugene, Ore.), high jumper Allison Jackson (Quartz Hill High School; Quartz Hill, Calif.) and thrower Christina MacDonald (Sutherlin High School; Sutherlin, Ore.).