What’s Wrong With José Berríos?

Here’s a thing that you could say about José Berríos: he’s been a lousy pitcher this year. I don’t even think he would argue with you on that one; after signing a seven-year, $131 million deal with the Blue Jays, he’s having comfortably his worst season in the majors. His 5.28 ERA is more than a run higher than his career mark coming into the year despite the declining offensive environment. He’s striking fewer batters out and giving up home runs at an alarming rate. Whether you’re talking about advanced or standard metrics, new school or old school, it’s been a disaster of a year.
Here’s another thing you could say about Berríos: he’s a solid pitcher who’s sticking with the approach that got him here in the first place. If you thought he was good last year — and you probably did, given that he put up a mid-3s ERA in both Minnesota and Toronto with the peripherals to match — you’d expect him to be good again this year. He’s not losing velocity. He didn’t change his pitch mix. He didn’t suddenly lose command of the zone. What the heck is happening here?
Before we go any further in this investigation, I’m going to spoil the conclusion a little bit: I don’t know the answer. I don’t think there’s an obvious answer at all, in fact. If there were, I’m fairly certain the Jays would have figured it out by now. Whatever’s ailing Berríos, it’s somewhere on the margins. Read the rest of this entry »