Double-A (AA) is an Introduction to player pitch for baseball players aged 8-9. Seven-year old players with advanced skills may be approved for play as approved by the Chantilly Little League Board of Directors. Participants must tryout and are subject to a draft for placement. Only those players deemed advanced enough to play in AA will be drafted into AA. There are no walks permitted; after the pitcher throws four balls, a coach from the team on offense will pitch for the remainder of the at-bat until the player puts a ball in play or strikes out. CYA LL provides paid youth umpires for games at this level.