There’s a really old Sesame Street book called “The Monster at the End of This Book.” Grover finds out what the title is and keeps begging you not to read any further, because he doesn’t want to meet the monster. (SPOILER ALERT: Grover is the monster. Clever, huh.)

In a similar note: I’m going to engage in some reckless “Theriot bashing” here. If you don’t care for that sort of thing, scroll down to see if the other Riders have something of interest or go see if Andy Dolan’s spleen has finally erupted. But please, please do not read this entire post and then put something in the comments about how upset you are that you wasted five minutes reading negative things about Ryan Theriot. It’s like going to the cabaret and complaining you saw a little skin.

All of this was brought on because Jason asked when Theriot was going to start regressing to the mean. Hah, hah, ha… yeah it’s already happening. Behold, the line graph!

This is wOBA, day by day, starting at April 15th. (I didn't think that knowing about Theriot's first week of sub-.300 wOBA was really worth paying attention to, and it made the graph really ugly.) You can click on it to view it in a larger size. .340 is right around league average. (Technically it’s .338, but .340 is on the graph and .338 isn't.) I used the three-year park factor from Baseball Reference. That black line is a ten-day moving average of Theriot's wOBA.

Since his hot April, where he hit .323/.396/.434, Theriot has hit .308/.388/.349. Theriot has done all kinds of regressing.

And I would continue to expect regression - in both directions. His BA (and thus his OBP) should continue to drop. His SLG, on the other hand, shouldn't stay this poor forever. I could be wrong, sure. With less than a month left, anything could happen. But regression has already occurred for Mr. Ryan Theriot.