The Rockies outrighted Blach to Triple-A Albuquerque on Friday after he cleared waivers.
Blach had the option of electing free agency, but he'll instead stick around in the Colorado organization, with whom he's spent the past two-plus seasons. Before being cast off the Rockies' 40-man roster July 27, Blach made 18 appearances (10 starts) for the big club, posting a 6.36 ERA and 1.70 WHIP across 63.2 innings.