CWS needed someone since they lost Contreras for the year...
I am extremely surprised they went after Horacio though
I just looked up Ramirez's stats for this year and, surprisingly, he's been a serviceable reliever in the 15 innings he's pitched.
It sounds like the Sox are going to experiment with DJ Carrasco, and possibly Broadway if Carrasco doesn't get the job done, as their fifth before the throw Ramirez in there.
Either way, the Sox are going to be hurting for a fifth starter over the next couple months.