MLB standards allow lots of ball juicing
Baseball offense is way up in the last 15 years or so, and one theory is juiced baseballs. However, MLB insists that the balls are tested every year to make sure they're consistent.
But James Sherwood, the professor in charge of actually testing the baseballs, says that the standard of what constitutes an acceptable baseball is way too broad:
"Their testing window is this big," he says, his hands a foot apart. "I don't know why it was ever set that wide." A ball testing at the high end could travel as much as 50 feet farther than one falling on the low end, he says. That's the difference between a lot of home runs and a whole lot of home runs.
You'd think, though, that if MLB was juicing the ball deliberately, the quality control guys would have been warned to keep their mouths shut.