Being a former basketball coach ... it's difficult to expand a rotation beyond eight players, especially in a 40-minute game (as opposed to the 48 NBA coaches/players are used to). The game was too close to be able to expand the rotation, so the fringe guys like White and Halliburton weren't given a shot. Halliburton is very good, but has some liabilities (especially on defense). He had a funny tweet yesterday, posing with his gold medal and saying "when you barely do anything on the group project and still get an A." They're all gold medalists, and they likely knew their roles going in.