The White Sox optioned Schweitzer to Triple-A Charlotte on Tuesday.
The rookie left-hander is losing his place on the major-league roster to make room for Chicago's trade acquisitions. Schweitzer figures to get another look in the big leagues later this season given that he's posted a 2.78 ERA and 1.28 WHIP in his first 11 appearances, though his 11:9 K:BB is less encouraging.