NAPA, Calif. – There was Khalil Mack, rocking a bucket hat instead of his Oakland Raiders helmet, standing on the sideline. So, too, was Amari Cooper, merely an observer.
And five of the Raiders’ nine draft picks, including their top four selections -- cornerback Gareon Conley, safety Obi Melifonwu, defensive tackle Eddie Vanderdoes and offensive tackle David Sharpe -- also sat out practice on Tuesday, after an off day. (Seventh-round pick Jylan Ware, an offensive tackle who went down in Sunday’s practice, was the other draftee to sit out.