Chacin was released by the Rockies on Thursday.
Chacin didn't allow a run in his last two appearances, but he posted a 7.61 ERA and 1.61 WHIP at the big-league level this season, and the Rockies decided to release the veteran to give their younger pitchers more opportunities the rest of the way. He could get a look from a team looking to add an experienced arm for the homestretch.