Fulmer was optioned to Triple-A Charlotte on Tuesday.
Something of a forgotten man after the White Sox acquired Lucas Giolito and Reynaldo Lopez this offseason, Fulmer is poised to make an impact in the majors this season, but he will have to master Triple-A hitters first. He notched a 6.14 ERA, 1.50 WHIP and 15 strikeouts in 14.2 innings in big league camp this spring. While Fulmer and Giolito both struggled against big league hitters, Lopez was impressive (3.72 ERA, 0.93 WHIP and 14 strikeouts in 19.1 innings) and could be the first in line when the White Sox need rotation help.