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.

Dallas Mavericks rookie Cooper Flagg felt firsthand how helping to initiate an NBA offense can be a physically demanding task.

Cooper Flagg made his professional debut Thursday night in the NBA Summer League and celebrated an 87-85 win over Bronny James and the Los Angeles Lakers.