Rolison will be a part of the Rockies' 60-man summer camp.
The 22-year-old southpaw is one of the Rockies' top pitching prospects, but he was undone by having to pitch half his games in the hitter-friendly park at High-A Lancaster last year. While he is on track to eventually be a key piece of the Rockies' rotation, he is unlikely to see much time in the majors in 2020.