Dalvin Cook discusses role in Cowboys' running back-by-committee

Dalvin Cook joined the Dallas Cowboys and will start on the practice squad. He believes he can contribute to the backfield alongside Ezekiel Elliott, Rico Dowdle, and Deuce Vaughn. Cook, used to being the primary back, is ready to adjust and help the team. He values learning from Elliott and pushing each other to improve. Cook's experience is expected to benefit the Cowboys' running back committee.