Recently honored by the Savannah Morning News as its 2004 All-Greater Savannah Area Offensive Player of the Year in football, Riley, who also stars for the school's basketball program, hauled in 34 passes for 381 yards.
He also pulled double duty as a safety, but says he's certain of where he'll end up on the Blue Devil depth chart.
"I'm going in as a wide receiver. The coaches liked my speed, and they told me I can come in and really work hard, which could lead to seeing early playing time. I know I have to work for it, but I really believe if I do that they'll give me a shot."
While the Duke recruiting board had a need for wide receivers, Riley will likely be the last one on taken, though the Blue Devils have a spot for Marcus Jones, should he decide on Duke.
Still, the supposed race for a scholarship was never a concern for Riley.
"They never put any pressure on me throughout the process. They were honest and told me that whenever I wanted to commit, they'd be ready for me. Today was that day."
Despite offers from Clemson, Vanderbilt, Maryland, East Carolina, Middle Tennessee State, and heavy interest from Georgia Tech, Riley said it came down to academics.
"If I never make it to the professional level, I'll have a degree that a lot of people would kill for. By going to Duke I'm set no matter what I end up doing."