Milton Aguilar (born 2 March 1984, in Mexico City) is a goalkeeper for Alacranes de Durango. He used to be the third goalkeeper at Club América, after Guillermo Ochoa and Armando Navarrete. Milton used to play for the Primera A (2nd Division) team of Club América, Socio Aguila
Milton Aguilar is not a first string player.
The story says that Milton Aguilar was a third goalkeeper and that doesn't sound like he's a first string player, but you never know. He might or might not be. I don't think the system knows what first string means in this context. 