The White Sox claimed Rolison off waivers from Atlanta on Friday.
Atlanta designated Rolison for assignment Thursday and he's quickly been scooped up off waivers. The lefty held a 7.02 ERA and 25:20 K:BB over 42.1 innings with the Rockies in 2025. Rolison will compete for a role in the Opening Day bullpen, but he has minor-league options remaining so the White Sox could send him to Triple-A Charlotte if he doesn't make the club.