Chris Coghlan (back) will play third base when he begins a rehab assignment with High-A Jupiter Wednesday. Coghlan hasn't played the position regularly since 2009 in the minors, but the Marlins have more of a need there than in the outfield. "We'll start his progression and see how he does," manager Mike Redmond said. "We talked about it as an organization and tried to figure out not only where he would fit, but where he could get the playing time." The Fish are hoping to get Coghlan back around September 1.