The Braves, meanwhile, are similarly young in their rotation other than Brandon McCarthy, but are about to get even younger. Counting 20-year-old Mike Soroka, who made his major-league debut with six shutout innings against the Mets a few weeks ago, the Braves have five starters 21 or younger who started the year ranked in the top 50 of all minor-league prospects by MLBpipeline.com.