 The Boston Celtics continue the NBA Summer League in Las Vegas with an 89-84 victory over the Charlotte Hornets. Boston improving its record to 2-1 and will take on the Dallas Mavericks at Cox Pavilion tomorrow afternoon in Las Vegas. The New England Revolution on a three-game losing streak after falling to the Philadelphia Union 5-1 at Subaru Park. The Revolution will host FC Dallas Saturday night at Gillette Stadium.