As palpable as the euphoria was among the Americans players who sauntered down the tunnel beneath State Farm Stadium following the USA’s 3-0 dismantling of Mexico last Saturday night in Arizona, so was the exhaustion. There was no hooting or hollering. The smiles were tired ones.  Before walking into the desert night, playmaker Gio was asked how he’d celebrate the Stars and Stripes most lopsided win against its arch nemesis since his father Claudio’s goal capped a 4-0 victory in 1995. The 23-year-old didn’t hesitate. "I'm gonna go to sleep," Reyna deadpanned. Mauricio Pochettino’s young U.S. t...