The Dolphins are putting starting defensive tackle Earl Mitchell on IR with a calf injury today, a source tells Mike Garafolo of NFL Network (on Twitter). The injury won’t necessarily rule Mitchell out for the year and he could be brought back later on this season. 
Mitchell, 29 later this month, left the Texans in free agency to sign with the Dolphins prior to the 2014 season. The defensive tackle received a four-year, $19MM deal with $8MM guaranteed.
With just two sacks to his credit in Miami and no sacks in 2015, Mitchell has underperformed by traditional metrics. Even though he hasn’t played like a superstar, Mitchell was being counted on to start on the interior line alongside Ndamukong Suh. Now, the Dolphins will perhaps turn to 2015 second-round pick Jordan Phillips or defensive end/tackle Julius Warmsley.
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