Long range three-pointers, highlight reel crossovers and gravity-defying slam dunks combine to make the NBA one of the most exciting professional sports leagues in the world. Millions of young men dream of playing on the world's brightest stage. With stars hailing from six continents, the NBA is home to a diverse mix of global cultures. As inviting as the league is to foreign players, there is one group it wants nothing to do with: 18-year-old ballers. Instead of having the option to enter the NBA Draft after high school graduation, the next wave of superstars faces a one-year detour. At...