It seems to me that players should be called up when they're mentally and physically prepared for the major leagues. Lightfoot789, you could add Blyleven (19 years old) and Hrbek (21) to the list. Also, add two excellent players who had their careers cut short: Lyman Bostock (24) and John Castino (24). KGB, there's a difference between "call-ups" and potential stars. Have the Twins left any potential stars languishing in the minors? We have all seen that the Twins haven't been shy about calling up young hitters the last two years. We will see more young hitters in the next 18 months. Our best pitching prospects have been delayed by injuries (Meyers and Gibson). I suspect we will see pitchers like Berrios, Burdi and Reed get to the majors before they're 25 years old in the near future.