Cevno
Hall of Fame Member
Actually the chance of suffering a loss of confidence and losing your game and all skills not getting developed as they should under pressure are more likely to happen because of debuting earlier than acclimatising due to starting early.List of youngest debutants -
Records | Test matches | Individual records (captains, players, umpires) | Youngest players | ESPN Cricinfo
Except Sachin and then Sobers none of them went that well.
Irfan Pathan , Parthiv Patel,laxman sivaramakrishnan and Piyush Chawla are classic examples in India alone.
At the same time due to money,attention and fame you could go astray too . Not too mention how it affects the motivation and desire when you are 38 to keep at the top and the toll it takes on the body and mind.