Well virtually every player has had to make adjustments multiple times throughout their career and let's be honest it's not like we've suddenly added field goals to baseball and are asking players to learn to kick a football. And nobody is "expecting" them to do it - players who can't adapt are going to start losing their jobs - just like one-dimensional players have harder time keeping a job, loogys now are a thing of the past This is just another development via analytics which will start to thin the herd of those that ignore it. No, most hitters in baseball most certainly do not start becoming spray chart artists, or even just start regularly pulling the other way, multiple times throughout their careers.