I didnt look at this one yet but going by these things, I have to say it is very very possible....
-Cubs hurting right now..
-BP hurting...
-Pitt's sticks on fire.
-Pitt ranks 3rd in the League in hitting %.
-Pitt spurred on by those two dramatic finishes, which probably renewed an interest in their fans...
-Pitt now seems motivated to fix there worst home record in the Majors.
-Pitt now one game above .500 and do not want to fall back below it...
-Pitt is in the Zone right now...
-No Sammy for the Cubs, advantage Pitt Pitchers.
-Pitt playing with to much motivation and confidence right now...
-Also, if I can recall, the Cubs were struggling offensively before their series with St Louis...but that one against the Cards were a rivalry game, so expected them to be up for it....This is a different situation for them and they seem to have returned back into the slump or at least is not consistant in all phases of their game, as Pitt seems to be in...
These are just what is occuring now and off the top of my head, and I think it may be worth another shot with them......but I will need to look further....Good luck and Aloha CC.