Lions vs. Jaguars 2012 injury report: Two Jags downgraded in practice

Jacksonville Jaguars' cornerbacks Derek Cox and Rashean Mathis did not practice Thursday, according to the team's official injury report.

Cox, who has a back injury, and Mathis, who has a groin injury, were limited in practice on Wednesday.

Also not at practice for the Jaguars on Thursday were full back Greg Jones, defensive back Dwight Lowery, center Brad Meester and running back Maurice Jones-Drew, who will sit out Sunday with a sprained foot.

Quarterback Blaine Gabbert, who has been battling a left shoulder injury the past couple weeks, was a full participant Thursday. Wide receiver Lauren Robinson, who is coming off a concussion, also practiced fully.

Running back Montell Owens (shoulder) was limited in practice Thursday. He did not participate Wednesday.

For the Detroit Lions, who will play the Jaguars on Sunday, they had 11 players who missed practice or were limited Thursday.

The biggest name on the list is wide receiver Calvin Johnson, who has a knee injury and did not practice. Defensive end Cliff Avril, safety Louis Delmas and safety Amari Spievey also did not practice.

The Jaguars (1-6) host the Lions (3-4) on Sunday at 1 p.m. ET.