[takki]

Homer parks. Specifically, Fenway and Minute Maid.

I can play an amazing game and lose because I gave up a couple of blooper home runs over that ridiculously short 310 wall in left. My team is mostly left handers, so I can't abuse that wall like my opponents can.

Minute Maid because it's basically impossible to hit a homer over the 435 center wall. That field can make any centerfielder look like a golden glover. Yet the side walls are extremely short so it just rewards players who swing late or early on everything.