"I felt like there were guys in front of me in the rankings that shouldn't have been," said Mitchell, a 6-foot-3, 170-pound point guard from Waxhaw (N.C.) Cuthbertson. "I felt like I had something to prove, so I went at the guy guarding me and tried to show the kind of player I am. I went in kind of angry."
Colleges across the country took notice.
His performance at the camp, coupled with unprecedented texting access from coaches, caused Mitchell to describe his recent days as "hectic."
"I get a lot of calls and texts at pretty much any time of the day," he said. "But, it's cool. I'm just working out and chilling right now."
One of those calls came from UNC assistant coach C.B. McGrath.
"He called me two days ago," Mitchell said. "He was just saying that they are going to start recruiting me and will be watching me this summer. They want me to come down for a visit as soon as I can."
Because of his travel schedule with the CP3 All-Stars on the Nike EYBL circuit, Mitchell plans to take the trip to Chapel Hill "most likely" in August.
"They want to show me the campus and the facilities," he said. "It will probably be like most visits – they'll introduce me to some people and discuss academics. I'm supposed to be talking to Roy Williams at some point. I'm not sure if it will be over the phone or just when I get there on my visit."
Despite being raised in basketball-crazed North Carolina, Mitchell didn't have a favorite team when he was younger.
"I didn't really feel anything different after UNC contacted me," he said. "It's great to have a school like Carolina call, but it wasn't a big deal. I didn't have a dream school growing up."
Instead, he focused on players – mostly guards -- he admired and could model his game after.
"I watched college basketball a lot, but I was more of a players guy. This past year I followed guys like Tony Wroten, Marquis Teague, Austin Rivers and Brad Beal. I just enjoyed how they played. My guy growing up was probably O.J. Mayo, he stood out more than others."
Mitchell has offers from UNC-Charlotte, Wake Forest, Clemson, South Carolina, Missouri, Mississippi State and Virginia Tech. He's also taken phone calls and received interest from Texas, Duke, Harvard, Miami, Memphis, Tennessee, Washington and Stanford.
"Academics, who is at the school and what would be my role as a freshman are probably the most important factors for me," explained Mitchell. "I don't want to come in and sit the bench. I want to go to a school where I'll be able to get out and run and play fast. I don't really care about location, because I won't have a lot of free time."
Still, Mitchell said a school with lots of talent already enrolled wouldn't scare him.
"I don't look into that stuff much," he said. "If I come in and work hard, I'll earn the right to play regardless of who else is coming in."
An ideal decision date, Mitchell said, is the start of his senior year (September 2013).
This summer, Mitchell has been invited to the prestigious LeBron James Skills Academy in Las Vegas on July 6. He'll finish off the Nike EYBL summer circuit with the CP3 All-Stars at the EYBL Finals in North Augusta, S.C., starting July 18.