A report from the Post-Gazette suggests that John Russell could be on the hot seat:
Like I wrote over at Bucs Dugout, I don't care much for Russell one way or the other. Although I think he does some things well, like not abusing his pitchers, it's hard to defend him much after a mess of a game like last night's, which featured a bizarre pickoff at second base by the catcher, a balk, a failed rundown, and whatever it is that Ryan Doumit is doing behind the plate. (The defensive regression Doumit has experienced under Russell has been particularly strange, since Doumit is by all accounts a hard worker and Russell is a former catcher. Doumit has never been a good defensive backstop, but this year he's been Ronny Paulino all over again.) It's true that all teams make fundamental mistakes, and it's probably the case that bad teams make even more, but the Pirates have made so many in the past few months that the buck has to stop somewhere.
More broadly, Russell's firing, if it happens, could spell trouble for general manager Neal Huntington. Firing a manager is usually a general manager's way of assigning blame, and it can often buy the general manager some time to try to turn things around with a new manager at the helm. If Huntington is unable to do so within a couple of years, he could be on his way out, too.