Marcus Mariota has been placed on injured reserve with an undisclosed injury. NFL Network reported it was a pectoral injury.

With Mariota sidelined, the Raiders signed DeShone Kizer to their practice squad after he spent last season on the team's 53-man roster but never played in a game.

Mariota, 26, signed a two-year, $17.6 million free-agent contract with the Raiders in March with a base salary of $7.5 million for 2020 fully guaranteed.