Rockies' Ryan Rolison: Throws off mound Friday

Rolison (shoulder) threw a bullpen session Friday, Danielle Allentuck of the Denver Gazette reports.

It's an important milestone for Rolison, who had left shoulder surgery last June. The 2018 first-round pick is expected to be game-ready around late May or early June, but it will probably be after the All-Star break before he might be considered for his first big-league promotion.