By Ryan AberStaff writerraber@oklahoman.comNORMAN — After a tough start to the week, with a loss at ORU and a loss at Minnesota, Oklahoma turned things around over the weekend with a pair of tight wins over the Golden Gophers. Week record: 2-2 Overall record: 27-14 (6-6 Big 12) The week ahead: Tuesday at Wichita State, Friday-Sunday at Kansas State Cavalli’s offensive role shrinks Friday night starting pitcher Cade Cavalli, a sophomore, has been Oklahoma’s regular designated hitter on nights that he doesn’t pitch for much of the season. Cavalli has started 19 times in the role, more than twice as many as anyone else. But in the last four games he hasn’t pitched — including three last week — Cavalli has been on the bench. In his place, the Sooners have used Jordan Vujovich three times and Brady Lindsly once. Cavalli is hitting .319, with four home runs and 17 RBI.