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Tom Gannam, Associated Press
St. Louis Rams quarterback Kellen Clemens, left, scrambles for a 1-yard gain as Cincinnati Bengals defensive end Michael Johnson defends during the third quarter of an NFL football game Sunday, Dec. 18, 2011, in St. Louis.

ST. LOUIS — Another short week makes it more likely St. Louis Rams quarterback Sam Bradford will be out again. At least now there's a bit of a backup plan.

While familiarizing himself with the roster, Kellen Clemens exceeded expectations in Sunday's 20-13 loss to Cincinnati. Scoring in double-digits qualifies as a successful day for the NFL's worst offense, even when Bradford's under center.

Clemens definitely did not appear lost. He called audibles, and threw a 25-yard touchdown pass to Danario Alexander with 1:08 to play that made it a one-score game while running the two-minute offense after one short practice stint.

Bradford wore a walking boot on the sideline, not a good sign for Week 15 at Pittsburgh on Saturday. Backup A.J. Feeley remains out with a fractured thumb.