Rusty Tucker

From SoSH

Tucker was claimed off waivers by the White Sox in February, but he was let go after posting an 8.77 ERA in 20 relief appearances for Double-A Birmingham. The 25-year-old has a very good fastball for a left-hander, but his command, which was poor before he underwent Tommy John surgery, is practically nonexistent now. via Rotoworld

Once known as a "flame throwing lefty", he underwent TJ surgery in 04 while in the Padres system and lost a good deal of velocity and command). Unfortunately for him, it made him useless to Ozzie Guillen as a "designated plunker."