Jayson Stark of ESPN.com has a report that the Pittsburgh Pirates could trade one of Kevin Correia or Jeff Karstens, following the recent acquisition of Wandy Rodriguez. Dealing one of those two would clear a space for Rodriguez in the rotation, although the Pirates can clear a spot by just moving Correia to the bullpen.

We've heard that they've been shopping Correia earlier this season. Correia would make the most sense to move. He's a free agent at the end of the year, and he's not pitching as well as Karstens. Meanwhile, Karstens is under control through the 2013 season, and has been pitching well lately. Correia probably wouldn't get much of a return, while Karstens would bring back the most value....

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