Gerardi is not at all to blame.
Arod - Tex - Swish - - none of those guys did squat at the plate
That's pretty much it right there.
But, I don't get carrying Montero if you're not going to ever use him. I know Posada actually deserved to be in the lineup, but Swisher/Martin could have easily been pinch hit for in a few big spots.
There's a lot luck in baseball though, especially in a short series. Jeter's ball goes two more feet, and it's a different story.