DE Smith out for rest of season
PITTSBURGH -- Playing for a month without Troy Polamalu was difficult enough for the Pittsburgh Steelers. Playing the rest of the season without Aaron Smith might be an equally big challenge for one of the NFL's best defenses.
On the same day Polamalu returned to practice after missing four games with a knee injury, the Steelers scrambled on Wednesday to replace Smith, the run-smothering defensive end who was placed on the injured reserve list with a torn rotator cuff in his right shoulder.
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