ST. LOUIS (AP) -- St. Louis Rams rookie guard Roger Allen III tore a ligament in his left knee in the season finale, spoiling his first career start.
Allen signed with the Rams as an undrafted free agent from Missouri Western, a Division II school, in April. He was inactive for 13 games and made his debut at Arizona in week 16.
Allen was injured in the first half of Sunday's 28-6 loss to San Francisco.
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