One one side of the field was a team of former pro soccer players. On the other, a squad of visually impaired amateurs. The two sides laced 'em up, stretched out their quads and went head to head in a scrimmage, though the matchup was a lot more even than you might expect. It's all part of something called the "Sound of Football" -- the latest experiment from the Pepsi Refresh Project. The idea was to level the playing field, so to speak, by forcing both teams to play a match using only their ears,
