Rusin pitched for the Rockies from 2015-19 before making one appearance with the Braves last season. He'll give the Rockies some left-handed relief depth at their alternate site.

Rusin spent most of last season with Triple-A Albuquerque, posting a 4.93 ERA and 42:21 K:BB over 65.2 innings. He'll get the chance to work with the major-league coaching staff during spring training, although it's unlikely he'll open the season in the majors after struggling to generate production in 2019.

Rusin will stick in the Rockies' organization and report to the Isotopes after passing through waivers untouched. The southpaw made just two appearances for the big club prior to being designated for assignment last week, allowing four runs on five hits and a walk in one inning of work.

Rusin was activated off the injured list last week but won't stick on the 40-man roster after allowing four runs in his two appearances. The 32-year-old also struggled last season with a 6.09 ERA, 1.50 WHIP and 47:26 K:BB over 54.2 innings. Rusin could end up at Triple-A Albuquerque if he goes unclaimed on waivers.