Khailil Greene from Clemson, considered an introvert, was never really the perfect teammate. They chalked it up to just being Khalil. He was the ACC player of the year, and drafted first round.
Turned out that he had severe social anxiety, has left the game and in hiding somewhere. The Padres never recognized his behavior as troublesome, but after going to the Cardinals, he was seen hurting himself in the dugout and teammates spoke up. He received help but has left the game since. Such a shame, such a great talent.
Zack Grienke also has the same disorder now managed by medication. If you google him, he will state it never bothered him on the mound and he never really understood why he felt the way he did. At one point, it was so bad, he did leave camp one year with the Royals, but since then has been on medication, he is better.
I did not post this to be negative, just thought it might help if you have concerns.