The Chicago White have requested release waivers for left-hander Charlie Leesman, a move that will grant the southpaw his unconditional release, according to Mark Gonzalez of The Chicago Tribune.
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The White Sox designated Leesman for assignment earlier this week to make room on the 40-man roster for infielder Tyler Green. Chicago needed to add Greene with second baseman Gordon Beckham hitting the disabled list with a broken hamate bone in his hand.
The White Sox selected Leesman in the 11th round of the 2008 MLB Draft. Last season, the southpaw maintained an ERA of 2.47 with a strikeout-to-walk ratio (SO/BB) of 1.98 over 26 starts for Chicago's Triple-A affiliate. He had spent the majority of the previous two seasons in Double-A, maintaining a combined ERA of 3.63 over 38 starts with 1.59 SO/BB.
The 26-year-old owns a career ERA of 3.37 with 1.67 SO/BB over five seasons in the minors.