Jacksonville injury report

JACKSONVILLE, Fla. -- A quick injury update from Jacksonville Jaguars coach Gus Bradley before the team leaves for Oakland on Friday afternoon ...

Tight end Marcedes Lewis (calf) is doubtful, while receiver Mike Brown (back), guard Will Rackley (knee), linebacker J.T. Thomas (hamstring), and cornerback Alan Ball (groin) will be game-time decisions.

Quarterback Blaine Gabbert (hand) and cornerback Dwayne Gratz (ankle) were ruled out earlier in the week.

The fallout: If Ball is unable to play, the Jaguars would be without both starting cornerbacks. Will Blackmon, whom the Jaguars signed on Aug. 28, is already starting in place of Gratz. Seventh-round pick Demetrius McCray and second-year player Mike Harris are the only other cornerbacks on the active roster. The Jaguars most likely will promote Marcus Burley from the practice squad.

If Brown is unable to play, expect to see more of Stephen Burton, whom the Jaguars claimed off waivers on Sept. 1. The team also could promote Jeremy Ebert from the practice squad.