The only pitch that should literally never be thrown is a pitch aimed at a hitter’s head.
Anything else, totally fine. You don’t read MGL over the years without learning some things about game theory. Game theory explains that, optimally, you need to be unpredictable. You should bunt just often enough so that your opponent doesn’t know if you’re going to bunt. You should pitch out just often enough so that your opponent doesn’t know if you’re going to pitch out. And you should mix your pitches just enough so that your opponent doesn’t know what pitch will be on the way. It’s simple, if oversimplified: don’t tip your hand. It does your side a disservice.
Game theory is fascinating, and at the same time analytically limiting. When you get to talking about pitch sequences, any pitch, in isolation, is justifiable. Any pitch should/could be thrown more than zero percent of the time. Let’s say there’s a hypothetical that calls for, I don’t know, 60% fastballs in, 39% changeups away, and 1% hanging sliders. That describes no real situation, but anyway. If you see the pitcher throw a fastball, okay, yeah, that should happen sometimes. If he throws a changeup away, same deal. And if he throws a slider down the middle? It seems like a mistake, but every so often it does make sense to do that on purpose, in theory, because otherwise the hitter could just rule the pitch totally out. When a pitch gets totally ruled out, it slightly tips the balance. Part of being unpredictable is the willingness to sometimes do things that don’t seem so good. Surprising mistakes can be surprising successes.
Because of game theory, it’s almost impossible to reasonably criticize any given pitch or pitch sequence. A pitch comes with an n of 1, and stripped from context, you don’t know how many times that pitch would’ve been thrown in the same situation. Taking one pitch and only one pitch, you almost always have to conclude that, maybe it was fine. There’s no such thing as a pitch that absolutely should never be thrown, aside from the one noted at the beginning. This is frustrating, but sometimes sensibility frustrates. So the world can be.
And yet. I think this is against my better judgment, but there’s a pitch I want to criticize. It happened in Wednesday’s Game 2, and it was thrown by Hunter Strickland to Salvador Perez. I can’t declare absolutely that the pitch was a terrible idea, because of all the reasons, but this is about as close as I can get to believing that a pitch shouldn’t have been called. Perez, against Strickland, broke the game open. He did so against a pitch I think he knew damn well was coming.
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