Cubs designated RHP Michael Rucker for assignment.
Rucker has made 96 relief appearances for the Cubs the last three years, amassing a 4.96 ERA and a 120/50 K/BB ratio in 123 1/3 innings. It’s unlikely that he has much additional upside at age 29, but since he’s durable, makes the minimum salary and has an option remaining, it’s not very likely that he’ll make it through waivers.