Dak Prescott and the Cowboys are coping and at the same time preparing to face the Raiders, with the QB calling the work 'the best medicine.'

Dak Prescott and the Cowboys are coping and at the same time preparing to face the Raiders, with the QB calling the work 'the best medicine.'

Former Dallas Cowboys player and assistant coach Greg Ellis wonders if he missed clues prior to defensive end Marshawn Kneeland's death by suicide.