Mavericks rookie Cooper Flagg all business as he makes his professional debut at NBA Summer League

LAS VEGAS (AP) — 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.

Flagg finished with 10 points on 5-for-21 shooting, including 0 for 5 from 3-point range. He also had six rebounds, four assists, three steals and one block. Though Flagg struggled at times to find his groove, there were flashes as to why he was chosen No. 1 overall last month, doing plenty of little things that helped the Mavericks seal the win...