No. 1 overall pick Cooper Flagg didn't shoot the ball well, but he was able to impact winning in a big way for the Dallas Mavericks in their Summer League opener. The performance didn't come without some jitters that Flagg says he has gotten through after his debut.

Cooper Flagg made his Summer League debut for the Dallas Mavericks in Thursday’s 87-85 win over the Los Angeles Lakers. While his performance didn’t quite live up to his usual standards, the game drew widespread attention.