When Sandy was good, he was very good , but when he was bad he was very bad.
Koufax amassed a 36 wins and 40 losses record in his first six years averaging 5 walks per game. His saving grace was that his strike out average of about 5 per game was beginning to rise with each year.
It makes one wonder if a club today would have such patience even in the minors with such a fairly high priced ball player.