Zac Stacy injury: Rams RB leaves with possible concussion

St. Louis Rams running back Zac Stacy left Sunday's game against the Chicago Bears with an apparent concussion, and is questionable to return.

Stacy was carrying the ball in the third quarter when he took a hit. Initially he was just listed as questionable, but it was later revealed that the team believed he could have sustained the concussion. He was having his best game of the season, gashing the Bears run defense for 87 yards while averaging an impressive 7.3 yards per carry and adding a touchdown.

Running the ball has been of vital importance as quarterback Kellen Clemens has been unable to have a big impact. He's taking care of the ball and making smart, efficient throws but has been unable to throw vertically. Backup running back Benny Cunningham has had similar success against Chicago, but to a lesser degree. He's carried the ball three times for 15 yards and will be leaned on down the stretch.

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