NBA Fans React To Cooper Flagg's Performance In Spurs-Mavericks

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LAS VEGAS — Cooper Flagg's first NBA Summer League game in Las Vegas did not go perfectly as planned. He shot 5-for-21, scoring only 10 points, but made an impact in a variety of ways.
It was a different story in the second game against the San Antonio Spurs. Dylan Harper, the second overall pick by the Spurs, made his Summer League debut, scoring 16 points on 5-of-12 shooting, grabbing six rebounds in 17 minutes.
The No. 2 overall pick Dylan Harper made his #NBA2KSummerLeague debut today for the @spurs!
— NBA (@NBA) July 12, 2025
🔥 16 points
🔥 6 rebounds
🔥 2 assists
🔥 2 steals pic.twitter.com/xav7c3y9Ef
But it was Flagg that stole the show, scoring 31 points on an efficient 10-for-20 shooting, while also going 3-for-8 from beyond the arc. Flagg struggled with his shot against the Lakers, but looked much smoother and more confident in his second go-around. Throughout the Spurs game, Flagg had social media going off with his variety of plays.
Ryan Nembhard delivered a perfect lob for Flagg in transition, and he threw it down with force, getting the crowd to its feet at Thomas and Mack Center in Las Vegas.
Cooper Flagg alley-oop dunk off a lob by Ryan Nembhard (with replays) pic.twitter.com/JdqkEqc0D1
— MrBuckBuck (@MrBuckBuckNBA) July 12, 2025
Flagg made it a point to get to the basket instead of settling for jumpers and finished nicely with his left hand late in the third quarter.
Cooper Flagg with the lefty finish (with a replay) pic.twitter.com/IZR9BCZjUD
— MrBuckBuck (@MrBuckBuckNBA) July 12, 2025
Then, he showcased his ability to play both ends of the floor, which is what made him such an enticing prospect coming out of Duke University. With seconds to go in the third quarter, Flagg drove the lane and threw down a one-handed slam, thwarting the Spurs' attempt to end the quarter with a basket.
COOPER FLAGG ON BOTH ENDS OF THE FLOOR TO END THE QUARTER 😤 #MFFL pic.twitter.com/1bQA0q0Wsu
— The Mavs Blog (@TheMavsBlog) July 12, 2025
Then in the 4th quarter, he finished off a fastbreak with a dunk all by himself with the Mavericks down 11.
Cooper Flagg with the fastbreak dunk. "Showtime" while down 11, and it was a regular dunk pic.twitter.com/EhsnxXutq4
— MrBuckBuck (@MrBuckBuckNBA) July 12, 2025
Even though the Spurs got the victory, Flagg showed more confidence and some thrilling plays throughout his second game, but his poise and performance on defense prove that he has a high floor as an NBA player.
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Grant Mona is a multimedia sports journalist based in Los Angeles, covering multiple teams. He is a co-host and producer on The Sporting Tribune Today on The BET Las Vegas, KIRN 670 in Southern California and the Hawaii Sports Radio Network. He formerly played baseball with the University of the Pacific Tigers.
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