The Cubs have DFA'd Carlos Marmol and released Ian Stewart. They've also called up Brian Bogusevic. Marmol had been terrible and Ian Stewart didn't know how to tweet. It says quite a bit about Marmol that the Cubs didn't even wait until mid-July to see if some team might trade for him, but they do have 10 days to work out a trade or release him. My guess is he'll be released.
Bogusevic has a career .656 OPS at the MLB level, but has been really good at Iowa (.929 OPS).