Rolison was invited to the Rockies' major-league spring training Wednesday.
Rolison spent a majority of the 2019 season pitching for High-A Lancaster, recording a 4.87 ERA, 1.44 WHIP, and 118:38 K:BB in 116.1 innings. Drafted by Colorado 22nd overall in 2018, the highly-rated pitching prospect has earned praise for his excellent command while pitching in an extremely hitter-friendly ballpark for Lancaster. Rolison will have the opportunity to learn from the big-league coaching staff this spring before likely returning to the minors for more seasoning.