There aren't any.

Yeah, you were preparing yourself to read something stupid, but it turns out you'll probably agree with the main points of this article. Don't worry, though. You'll still read something stupid, or I'm not doing my job.

Let's remember back when Tim Lincecum was really struggling. Really, really, really struggling. Bad enough for the Wall Street Journal to write stories with headlines like Yup, Tim Lincecum Is the Worst Pitcher Ever. Back then, it was okay to experiment. Everything was on fire, so it was worth seeing if the unmarked jug of fluid in the garage was water or kerosene. It's not like you were going to make things more on fire, so, hell, toss it on.