-135 on the road is a decent line, especially when Pittsburgh's "ace" is throwing at home. Maholm was solid vs Brewers last week and led 5-1 before his 6th inning meltdown.
I see no reason to bet on Pitt though as they can't touch Gallardo. They only got 3 guys on base against him in 8 innings last week and have 3 runs on him in 25 innings