The Mavericks defeat the Celtics, 101-90. Olivier-Maxence Prosper (22 points, four assists) and A.J. Lawson (21 points, four rebounds) combined for 43 points for the Mavericks in the victory, while Jaelen House tallied 18 points and nine assists for the Celtics in the losing effort. The Mavericks 1-3 in NBA 2K25 Summer League, while the Celtics fall to 2-2.