The White Sox recalled Sandlin from Triple-A Charlotte on Friday.
Sandlin will start Friday's game against the Royals after posting a microscopic 1.57 ERA with a 1.26 WHIP and 26:11 K:BB across 23 innings spanning six starts for Charlotte this season. He made two starts for the White Sox earlier this season, both against the Twins, and has compiled an 8.10 ERA and 14:7 K:BB across his first 13.1 innings in the big leagues.