After being recalled from Triple-A Charlotte over the weekend, Sandlin made what was believed to be a spot start in the White Sox's 3-1 loss to the Cardinals on Sunday, when he struck out five while allowing three unearned runs on two hits and no walks over 5.2 innings. However, with manager Will Venable announcing Thursday that Luis Castillo has been moved to the bullpen, Sandlin will have a chance to stick around in the rotation for the rest of the regular season and potentially into the postseason. Over six total appearances (four starts) with the big club, Sandlin has delivered a 5.64 ERA, 1.19 WHIP and 29:12 K:BB across 30.1 frames.

Sandlin got off to an excellent start Sunday, as he held St. Louis to just one hit through his first five scoreless innings. However, he'd depart after giving up a pair of one-out singles in the sixth before the White Sox bullpen coughed up three unearned runs, following a Colson Montgomery error. Despite the disappointing finish, it was an encouraging outing overall for Sandlin, who gave up six runs in 5.1 innings in his last major-league start Aug. 7. Overall, Sandlin sports a 5.64 ERA with a 1.19 WHIP and 29:12 K:BB across 30.1 innings with Chicago this season.