When it comes to rivalries for the the United States Men’s National Team, we already know who that is. Ask any American fan and the answer will be the same: Mexico. The close proximity between the two nations, their dominance of CONCACAF, the many Dos A Cero games, a series of heartbreaking USMNT losses, and the litany of brutal fouls Rafa Marquez has committed have ensured that matches between the two teams are always fierce. While nothing is quite like facing El Tri, who would be second on that rivalry list?