Defensive tackle Michael Brockers has a high-ankle sprain, which means he could be sidelined for the first month of his rookie season.

Brockers was the No. 14 overall pick in last April's draft out of Louisiana State, and the Rams were pleased with what they had seen from him in training camp and the preseason.

Brockers had his right ankle encased in a cast almost up to the knee on Friday.

He suffered the injury in the first quarter of Thursday night's 31-17 victory over Baltimore. Brockers was cut block below the knees by a Raven while in pursuit of Baltimore running back Bernard Pierce down the line of scrimmage. Brockers did not return.

With Trevor Laws already on injured reserve because of knee problems, and Darnell Scott on the mend from knee surgery, the Rams are on the thin side at the position. The top backups are Jermelle Cudjo and Matt Conrath, and Conrath left Thursday’s game with an injury that Fisher declined to disclose.