What to know: Duke's Jahlil Okafor

Last season, Duke had Jabari Parker, the nation's No. 2 high school prospect, and he left as the second pick of the 2014 NBA draft. This year, Duke brings the No. 1 recruiting class to Durham and the No. 1 player from the prep ranks in Jahlil Okafor.

Why he was ranked No. 1

As a freshman and sophomore, he made a name for himself on the national circuit as a big-bodied center with hands that were not only huge but secure with a soft touch. He also had natural, nimble footwork, allowing him to score inside or get fouled. Okafor, however, did carry extra pounds, and that limited his progress and productivity. In his junior year, he began to transform his body, and you could notice his muscle tone and stamina increasing. In doing so, he went from simply being bigger than everyone to being a dominating figure just about every time he stepped on the floor.