Matt Ryan knocked down a straightaway three pointer to lift the Celtics over the Bucks, 111-109. Matt Ryan recorded a team-high 23 points (14 in the 4th Quarter) for the Celtics, while Mfiondu Kabengele added 15 points, 11 rebounds and four assists in the victory. Sandro Mamukelashvili tallied a game-high 28 points, along with nine rebounds for the Bucks in the losing effort. The Celtics improve to 1-1 the NBA 2K23 Summer League, while the Bucks fall to 1-1.