The Chicago White Sox purchased the contract of left-handed pitcher Leyson Septimo from Class AAA Charlotte, the team announced on Thursday. Septimo will take the roster spot of lefty Will Ohman, who was designated for assignment on Wednesday.
Septimo, 26, is 2-1, 1.48 in 21 games this season with Charlotte, all in relief. He has no major league experience, but has dominated left-handed hitters this season, allowing just four hits to lefties in 42 at-bats.
Septimo played in the 2009 Futures Game as a member of the Arizona Diamondbacks organization, and was named a mid-season All-Star in the Southern League in 2010. The White Sox claimed him off waivers from Arizona on June 13, 2011.