BY DARNELL MAYBERRYSemaj Christon scored the game-winning basket on a driving layup with 20.4 seconds remaining to lift the Thunder to a 76-74 win over Charlotte on the opening day of the 2015 Orlando Pro Summer League on Saturday. Christon, a member of the Oklahoma City Blue last season whose draft rights are owned by the Thunder, finished with 14 points and a game-high 10 assists.Read more on NewsOK.com