Mendoza did not see the field during the Raiders' 27-13 win over the Dolphins on Sunday.
Kirk Cousins was named the Raiders' starter in early September, and the veteran quarterback commanded the offense sufficiently in Sunday's win, completing 21 of 30 targets for 160 yards, three touchdowns and two interceptions. Mendoza is firmly entrenched as the backup, though the rookie first-overall pick could take over as the Raiders' starter later this season if Cousins' production dips.