Cubs designated RHP Christian Roa for assignment.
Roa didn’t end up making it to Chicago after being claimed off waivers from the Orioles back in mid-May. The 27-year-old middle reliever posted a pedestrian 5.19 ERA, 1.96 WHIP and a 6/7 K/BB ratio across 8 2/3 innings for the Astros earlier this year.