Philadelphia Union have signed their third homegrown player with the addition of Cristhian Hernandez.
The 18-year old Mexican-born forward has come through the club's youth academy but will be added as an international player.
Hernandez was named the 2011 US Soccer U-17/U-18 Development Academy Player of the Year, after scoring 16 goals in 26 appearances for Union's youth affiliate, Players Development Academy (PDA).