South Sudan’s basketball team nearly delivered a stunning upset to a United States team of NBA superstars on Saturday before losing 101-100 in an Olympics warm-up game in London. LeBron James, 39, the all-time NBA scoring leader, registered a game-high 25 points, including the deciding points on a driving layup with eight seconds remaining at the O2 Arena. South Sudan, who led 58-44 at half-time, took a late lead after an 8-0 scoring run and were poised to pull off one of the greatest shocks in international basketball before James saved the day. “The ending was good for us – just to feel that…