 The Boston Celtics continued the NBA Summer League in Las Vegas with an 89-84 victory over the Charlotte Hornets. Boston improved its record to 2-1 and will take on the Dallas Mavericks at Cox Pavilion tomorrow afternoon in Las Vegas. The United States cruised to a big victory in their third contest of the USA Basketball Showcase. Team USA took down three-time NBA MVP Nikola Jokic and Serbia 105-79 in an exhibition game in Abu Dhabi. Team USA will now square off in London on Friday.