Atlanta acquired Rolison from the Rockies on Wednesday in exchange for cash considerations.
Rolison had been removed from the Rockies' 40-man roster Tuesday and is now headed to a new organization. The left-hander held an ugly 7.02 ERA and 25:20 K:BB over 42.1 innings for Colorado in 2025, but Atlanta believes it can coax better results out of the 2018 first-round pick.