Traded away last season but not forgotten, the Chicago White Sox reacquired pitcher Zach Stewart on Thursday by claiming him off waivers from the Pittsburgh Pirates. Stewart was traded to the Boston Red Sox last season along with Brent Lillibridge in the deal that netted the White Sox Kevin Youkilis. Stewart made two humbling starts with the Red Sox after the trade (14 earned runs in 5 2/3 innings) and 11 more at Triple-A Pawtucket. In November he was traded to the Pirates and then designated for assignment on Jan. 17.