More talk of a juiced ball


At the end of March we linked a story from Rob Arthur and Ben Lindbergh at FiveThirtyEight which sought to figure out why home run rates have spiked. Their theory was that it was either randomness or a juiced ball. They tested baseballs and found no evidence of a different ball, so that seems to have ended that.

Except it didn’t end it because, as so often is the case in the early part of a season, we are seeing some statistical, well, let’s just call it “interestingness” and people don’t like to let such interestingness go. To that end Yahoo’s Jeff Passan — acknowledging the Lindbergh/Arthur study — asks once again if the balls are funky.

It’s all based on exit velocity of baseballs, which Passan notes has spiked. He doesn’t come to any conclusions — just not enough data — but the very act of asking the question in a column and Passan’s acknowledgment that he sounds like a conspiracy theorist tell you that that’s his hunch. And it could be the case. I still think the ball got juiced in 1987 and again, on a more permanent basis, in 1993, but there’s no evidence to really support that. Just one of those “can’t think of anything better” sort of situations.

For now, though, it’s May 2. And I suspect that for as long as there have been May 2nds in a baseball season, people have looked at the stats and suspected something weird was afoot. Maybe something weird is afoot. We just can’t really know.