McCullers gave up three runs on six hits and four walks over five innings during Saturday's 8-4 loss at Texas. He had seven strikeouts and didn't factor in the decison.
The 27-year-old was provided an early three-run lead, but he tied his season high with four walks while allowing multiple runners on base in four of five frames. McCullers has a 2.96 ERA, 1.16 WHIP and 59:26 K:BB across 51.2 innings this season.