By Jamie Spencer Mexico beat Saudi Arabia in their final group game, but the 2-1 scoreline was not enough to jump ahead of Poland in the Group C standings as El Tri exit the World Cup before the knockout rounds for the first time since 1978. Goal difference was ultimately the deciding factor, with Salem Al-Dawsari breaking Mexican hearts deep into stoppage time after Henry Martin and Luis Chavez had put them on the verge of the last 16 if they could find another goal. Mexico had a glorious opportunity within the first three minutes that Saudi goalkeeper Mohammed Al-Owais was equal to. Orbelin …