P.S. train shot blocking never give good results,this is the example
if he train other center skills instead his salary won't be lower, probadly it would be much higher - so i don't see your point in it.
if he train outside skill,he have a better player with lower salary...
and the problem of training one position is just to find the equilibrate way to have some great players and maintain salary cup of the team low,the choice to train one position,in the mind of BBs, I suppose it's an extreme choice to use for limited time and for particular cases(if a player need immediatley a pop to be sold,if a player is "old" for training and need a pop,if a player was injured and have to recover a certain number of training)