Rockies designated LHP Sammy Peralta for assignment.
The procedural move opens a spot on Colorado’s roster for veteran reliever John Brebbia. Peralta posted an inflated 10.13 ERA, 1.88 WHIP and 4/2 K/BB ratio over 2 2/3 innings for the Rockies earlier this season. He figures to pass through waivers unclaimed and elect free agency.