Xavier Hernandez and Paul Bako played in the majors for a few years. Don't know if I would call their careers significant. BJ Ryan also comes to mind. Still the point in the above post is valid. Many ex players have said the most fun they ever had in their baseball careers was at the college level. Winning is not important in the minors, development is. That makes it tough for lots of guys who have to change their mindset. I recall Robe once saying some of his guys who played in the minors may have had only a couple of guys who spoke English as teammates on some teams. Minors is a very rough life. Fortunately, MLB just agreed to improve the conditions for those guys.