Wallace Prather III and Jabari Smith Sr. met 30 years ago when both were teenagers, playing basketball on the AAU basketball team Prather’s father founded, the Atlanta Celtics. “I was probably 12, and he was probably 15,” Prather said last week. Smith went on to have a five-year career in the NBA, and Prather went on to become an agent who represented his childhood friend in the later years of his basketball playing career in Europe. Now, three decades later, Prather is representing his friend’s son, Jabari Smith II, in this month’s NBA Draft, where he could be the No. 1 overall pick.