Keller is slated to undergo a magnetic resonance imaging exam to determine the severity of the damage.
Keller got hurt when he was hit in the knee by Texans rookie safety D.J. Swearinger, bending the leg awkwardly.
The former New York Jets starter signed a one-year, $4.25 million contract with the Dolphins during the offseason and caught one pass for 14 yards Saturday.
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Aaron Wilson covers the Ravens for The Baltimore Sun.
This story originally appeared on Nationalfootballpost.com
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