Who is everyone rooting for in the Giants-Pirates series? Almost feels like a psychological assessment which way you lean on this one
Pirates, totally. We're 4 behind Pittsburgh, 3 up on Giants. A lot more plausible that we finish ahead of Giants than that we pass Pirates.
Also more likely that we finish ahead of Giants with some room to spare, than that we pass the Pirates with room to spare. The "room to spare" part matters, because if we're 5 up on the Giants going into the last week, for example, you might be able to set up the rotation so that you can get Arrieta or Lester starting the sudden-death game, rather than Haren or Hammel.
As Ron says, if the Cubs win, they don't need to worry. (At least about the Giants.)