By STEVEN WINE
AP Sports Writer
MIAMI (AP) - Four-time Pro Bowl running back Arian Foster has announced his retirement midway through an injury-plagued season with the Miami Dolphins.
Foster, 30, tried to come back from a torn Achilles tendon, but was slowed this season by groin and hamstring injuries. He disclosed his decision Monday on the website Uninterrupted, and the Dolphins confirmed it.
The retirement is effective immediately.
Foster signed a $1.5 million, one-year contract with the Dolphins in July after seven years with the Houston Texans. He holds the Texans' franchise record with 6,472 yards rushing.
This season he rushed for 55 yards in 22 carries. His playing time was curtailed with the emergence of Jay Ajayi, who tied an NFL record by surpassing 200 yards rushing each of the past two weeks.
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