Dallas Mavericks rookie had a difficult, painful night at the office in the Mavs’ loss to the Boston Celtics in Jayson Tatum’s return. Flagg appeared to be in severe pain early in the game and the Celtics were very physical with him, and despite another hot shooting night by Klay Thompson, it wasn’t enough to get the Mavs close in a 120-100 defeat. The DLLS Mavs crew breaks down the game, the Mavs and Stars’ ongoing lawsuit, and does another Tankathon spin, live on YouTube.