Oklahoma State linebacker Collin Oliver will be sidelined for an extended period of time because of a foot injury, coach Mike Gundy said Monday. The three-time All-Big 12 selection exited the No. 13 Cowboys' 39-31 double overtime win over Arkansas in the first half with a right foot injury and returned to the sideline in crutches and a boot. Gundy said Oliver will miss a "considerable number"...