Cooper Flag is one of the most celebrated Duke basketball prospects since Zion Williamson was on the hardwood in Durham. As the No. 1 overall prospect in every major recruiting service, Flagg will have the attention of the college basketball world as he takes the floor for the Blue Devils this year. In ACC spring meetings this week, Duke head coach Jon Scheyer noted what he loves about his prized recruit the most: his competitive fire. “Cooper has been a joy to watch him play in high school, because no matter when I’ve seen him. If it’s Sunday morning at 8:00 AM after playing a few days. Wheth…