Riley, a 6-foot-2 250-pound defensive lineman from East Point (Ga.) Tri-Cities, arrived Saturday morning and attended the first practice session of the day working with defensive line coach John Blake.
"It was good," said Riley. "I learned a couple of things."
Riley's play earned Blake's praise.
"He really liked me, he told me," said Riley. "He said he really wanted me to gain some weight. He said if I send them some film and he liked it, they'll come get me.
"He said they need D-linemen. He said I'd be good at three-technique."
Following the camp, Riley spoke with Thigpen, his primary recruiter.
"He asked me if they gave me a scholarship would I come," said Riley. "I said ‘Yeah.'
"He says they just want to see some more film [before they offer]. He said after a couple of games, send them more film."
Riley admits that the camp has made him lean towards UNC.
"I just like the atmosphere," said Riley. "They showed me around a lot and I liked everything I saw. I also really like the coaches."
Riley had hoped to make a verbal commitment before the start of his senior season. However, that doesn't appear likely at this point.
While he has yet to receive his first scholarship offer, Riley is receiving strong interest from Alabama, Akron, UNC, and South Carolina.
Saturday's camp was the only camp Riley has attended, but he has made unofficial visits to both Alabama and South Carolina.
For Tri-Cities, Riley alternates between defensive end and defensive tackle. Last season, Riley collected 60 tackles including five sacks. He also forced three fumbles and recovered two fumbles.