Who is Mac McClung? Former high school phenom breaks out as Slam Dunk champion at NBA All-Star weekend | CBS Sports Headlines Who is Mac McClung? Former high school phenom breaks out as Slam Dunk champion at NBA All-Star weekend McClung is now a member of the Philadelphia 76ers ESN … Continue reading Who is Mac McClung? Former high school phenom breaks out as Slam Dunk champion at NBA All-Star weekend