What is an often overlooked but important skill or attribute to consider when evaluating position players in baseball at any level?

Physically, there is not much if anything that is overlooked when a MLB team is evaluating players. What is of interest but almost impossible to determine is how players will handle adversity. If you think about it, if a MLB team is looking at a young player (perhaps considering drafting the player) they have been really good ever since they started little league. Along the way other players max out , get hurt or don’t develop enough for a MLB team to be looking at them but the “cream of the crop” physically can do all the things a MLB player needs to do or at least projects to be be able to do them.

But eventually, every player will face adversity. Maybe they go into a prolonged slump at the plate. Maybe they have difficulty fielding balls hit to their left. Maybe they get erratic with their throwing accuracy. Something will happen where perhaps for the first time ever, things don’t go their way and they struggle. The guys that go on to have successful MLB careers are the ones who don’t let the adversity get the best of them. They are the ones who go back to the drawing board to figure out what is wrong and how to fix it. MLB teams want those kind of guys but it is very hard to figure out which ones they are unless and until they actually face some kind of adversity and the team can see how they deal with it.