Well actially they probably will. There are two weeks per season when you only have two games, more if you end up 5th or 8th. Most people train either Fts or stamina in that time. If you got a player when he was 18, kept him for 10 seasons and did one each of stamina and free throws per season you would have done 10 weeks of free throws. Haven't you ever seen older dudes on the transfer list with prominent stamina and free throws? That is how it happens.