 Hornets suffer their first loss of the NBA Summer League, losing to the Boston Celtics. The NBA champions 89-84. First loss after five wins for Charlotte. Led in this game by Xavier Simpson with 19 points. Matt Morgan added 15. USA Basketball improves to 3-0 in their tune-up games to the Paris Olympics, beating Serbia by a score of 105-79. 24 points for Steph Curry. Jim Zoki, WBT Sports.