Of course you can. That is called coaching, but the player has to be receptive and willing. As I have said before on here, Ensberg told me at RR: “You can’t tell most of these guys anything. They know it all.”
I could not make a bad player a good one, but I could make any player better than they were. They were kids 8-18, though, not pros.
I was thinking about fast twitch responses, instincts if you want, like hitters have being hard to re-train after a certain amount of time. Are there any notable cases of guys re-learning their strike zone after several years in the bigs? How many years did Biggio flail at the low and away slider?
I was not devaluing coaching at all, not by a long shot. I would also think that pitchers have an advantage in this regard, because they know what they want to do beforehand, while hitters have to react.
