General Spirit: Sometimes players are better than expected.
In some cases players will continue to develop beyond their potential ratings.
This can happen for any player under age 28.
There is no action required by a team owner. This just happens for some players.
Such a player will simply continue to develop while in a team's minor or major leagues.
Pitchers may improve: CO, K, and/or pitch ratings
Position players may improve: CH, PH, K, EYE, Arm, and/or fielding ratings