No. 1 Texas will have starting quarterback Quinn Ewers back on the field when it meets No. 18 Oklahoma in the Red River Rivalry showdown on Saturday in Dallas.Longhorns coach Steve Sarkisian announced Thursday that Ewers has recovered from an oblique injury and will lead Texas against its longtime rival in the first-ever meeting for the teams as members of the Southeastern Conference.Ewers exited Texas’ victory against UTSA on Sept. 14 and was replaced by freshman Arch Manning, who then guided the Longhorns (5-0, 1-0 SEC) to wins over UL Monroe and Mississippi State.