wonderboy

plural wonderboys

1. informalA male child prodigy, or (loosely) a talented male of any age.

   ...the wonderboys of Detroit and Wall Street...

   1992, James B Stewart, Den of thieves

   2 more examples

   Daddy had been using that child for a boy prophet, building up a whole new ministry around him, since the child was four years old, calling him a wonderboy...

   1986, Don Belton, Almost midnight

   He could have been a robot really. He could be taught to do anything, the coaches thought. He was a wonderboy.

   2004, Joshua Cooper Ramo, No Visible Horizon: Surviving the World's Most Dangerous Sport