The first timesaw the back-shoulder fade pulled off to perfection, he was still eight months away from playing in the NFL. It was the 2007 NFC Championship Game, and Giants quarterback Eli Manning and receiver Plaxico Burress ran it over and over against the Packers' Al Harris. "Al was in perfect coverage every time," Nelson says, with a hint of empathy. These days, few QB-WR combos run the back-shoulder fade better than Aaron Rodgers and Nelson, the NFL's second-leading receiver with 712 yards through seven games. Here, as Nelson takes us through the intricacies of the route, the message is clear: "If the timing is down, the back shoulder is unstoppable."