White Sox purchased the contract of RHP Charlie Shirek from Triple-A Charlotte.
Shirek, 27, compiled a 3.65 ERA and 117/29 K/BB ratio over 170 1/3 innings at the Triple-A level this season while showing an uptick in velocity. He might not turn out to be anything more than starting pitching depth, but the White Sox didn’t want to risk losing him in the Rule 5 Draft.