Hector Santiago will join the White Sox rotation in the wake of Jake Peavy's rib injury, MLB.com reports.
Peavy suffered a rib injury in Tuesday's start and will miss 4-6 weeks. Santiago will retake his spot for at least Sunday's turn. Given his success this season -- he owns a 2.96 ERA and 31 strikeouts in 27 1/3 innings -- Santiago will likely stay in the rotation until Peavy is ready to return.