I am convinced the reason Javy waves at stuff that ends up a foot outside is he simply cannot process input as quickly as just about any other big league hitter. I think he has to make his swing decision earlier than most, so he has to defend against anything that looks like a strike while it’s still 45 feet away, and make his decision then. So if you can execute a half-decent slider, you got him basically dead to rights. But make a mistake, and he’ll kill you.