May 15, 2010 1:39 AM EST

Doug Mientkiewicz opted out of his Minor League contract, and he again is a free agent. The Marlins signed Mientkiewicz to a Minors deal May 5. He appeared in four games with Triple-A New Orleans, where he was 4-for-16 with an RBI.

The Marlins designated Mike Lamb on May 7, and he has since been outrighted to Triple-A.

Lamb can see action at either first base or third base. He becomes an candidate to rejoin the Marlins as a left-handed bat.

Via MLB.com