LAS VEGAS — Cooper Flagg ’s first NBA Summer League is over after just two games. The Dallas Mavericks shut down the No. 1 overall pick for the remainder of their time in Las Vegas, a person with knowledge of the situation of the decision confirmed Sunday to The Dallas Morning News.

Cooper Flagg’s first and likely only NBA Summer League is over. The Dallas Mavericks have shut down the No. 1 pick in this year’s draft after two summer league games, according to a person who spoke S