The 6-foot-9 center out of Los Angeles (Calif.) Harvard-Westlake, committed to UNC after narrowing his focus to the Heels and Connecticut.
Stepheson is Scout.com's No. 58 prospect and No. 13 center in the Class of 2006.
His commitment strengthens an already impressive crop headed to Chapel Hill. Led by Top 10 prospects Wayne Ellington (No. 4) and Tywon Lawson (No. 8), North Carolina has the No. 2 early recruiting class in America, a spot behind Ohio State. In addition to Stepheson, the Heels have No. 22 Deon Thompson and in-state forward William Graves.