Two of the best young high school teams in the country square off Friday (4:30 p.m., ESPNU) from the HoopHall West in Scottsdale, Arizona. The matchup between DeMatha Catholic (Maryland) and Sierra Canyon (California) will not only feature a pair of ESPN 25 prospects in D.J. Harvey Jr. (No. 17) and Cody Riley (No. 10) respectively but also several other highly recruited prospects and numerous other future Division I players.