The Pittsburgh Pirates have been trying to put together a successful platoon for several years now. Each time, it has failed to work.

It started in 2011 with Garrett Jones. After showing that he couldn't hit left-handers while playing full-time in 2010, the Pirates brought in Matt Diaz as a platoon partner. Diaz had strong career numbers against lefties, but was on the decline, and didn't do his part in the platoon with Jones in right field. Meanwhile, the Pirates had Lyle Overbay struggling at first base, up until their trade for Derrek Lee at the deadline.

Jones made the switch to first base in 2012, and a new platoon partner was brought in. This time it was Casey McGehee. The numbers against lefties weren't bad from McGehee. He had an .807 OPS with the Pirates in his platoon role....

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