The Cubs released Blach on Saturday.
Blach was briefly up in the big leagues with the Cubs in May, tossing three scoreless innings of relief in an appearance against the Brewers before being designated for assignment the next day. He ultimately cleared waivers and elected free agency before re-signing with the Cubs on a minor-league deal a few days later. During his time at Triple-A Iowa this season, Blach posted a 6.36 ERA and 1.76 WHIP over 58 innings in 15 appearances (nine starts).