An upset in sports is a tale of the split-screen day. One team — the emboldened underdog — rides the highest of highs, storming the field and reveling in its victory as it has just pulled off the seemingly impossible. The other team — the deflated heavyweight — is humbled and humiliated, slumping off into the locker room and being forced to grapple with a reality it had never considered. 

November 5, 2010, was one of those split-screen days.

Mexico, the emboldened underdog. The United States, the deflated heavyweight.