El Tri is tied with Costa Rica at the top of Group A with six points. Because it is one goal better on goal differential (plus-3 to Costa Rica's plus-2), a tie would see Mexico through as the Group A winner. That would avoid a quarterfinal match against the US, as the winner will probably draw Saudi Arabia in the quarterfinals.

The lights go up in Las Vegas on Sunday night as defending champion Mexico faces Costa Rica with Group A supremacy on the line.