The San Antonio Spurs defeated the Dallas Mavericks, 76-69, in the NBA 2K26 Summer League at Thomas & Mack Center on Saturday.

Flagg scored 31 points and Harper poured in 16 as Harper's San Antonio Spurs claimed a 76-69 victory over Flagg's Dallas Mavericks in an NBA Summer League showdown in Las Vegas. Despite his team being on the losing end, Flagg put on a clinic.

Cooper Flagg's summer league debut wasn't perfect. But there were flashes of greatness, and at this stage the Mavericks would be wise to let him fail.

All in all, the showdown between the No. 1 pick and No. 2 pick Dylan Harper was as good as it was expected to be, even if it wasn’t advertised on the same level as Flagg’s debut against the Los Angeles Lakers — and Bronny James.

Cooper Flagg led the Mavericks with a game-high 31 points, four rebounds and one assist, while David Jones-Garcia scored 18 points off the bench for the Spurs. Here are five observations from Saturday’s game:

Flagg scored 31 points in 31 minutes in Saturday's showdown with No. 2 overall pick Dylan Harper, as the Mavericks fell to the San Antonio Spurs, 76-69. His 31 points were the most by a No. 1 pick in the Las Vegas Summer League since John Wall in 2010,

This article was originally published on www.si.com as Cooper Flagg Thinks NBA Summer League Debut Was One of the Worst Games of His Life.