"Was Luka This Good at 18?": Cooper Flagg Sends Fans Into Frenzy as First NBA Poster Dunk Goes Viral

Cooper Flagg shocked the basketball world with his first poster dunk in the NBA as the Dallas Mavericks beat the Toronto Raptors 139-129 on Sunday. One of the players leading the charge for the Mavericks was their rookie, Flagg.

Aside from stepping up to help Anthony Davis get the Mavericks' first win of the season, Flagg defied gravity and rattled the rim over an opponent in the third quarter.

With 3:16 minutes remaining in the third, Dereck Lively II secured a rebound and quickly dished it to D'Angelo Russell. D-Lo then spotted a running Cooper Flagg and passed it to the rookie. Flagg saw the opening to drive all the way inside the paint and dunked over Sandro Mamukelashvili.

The fans in attendance went wild, and so did fans on social media. Flagg's dunk went viral as fans were in awe of his athleticism.

Here's what some fans said on X:

Toronto Sports Fan

@TDOT416ixBro

@TheHoopCentral Was Luka this good at 18???

Kungfu Kenneth

@kungfukenn_eth

@TheHoopCentral I hope this is the start of something beautiful 🤩

Cobee

@cobeeknows

@TheHoopCentral Rookie of the Year 😭😭

Shake Milton Fan

@ShakeMiltonStan

@TheHoopCentral Guys were talking shit the other day man smh.. dude is a generational talent

Evan Guthrie

@EvanGuthrie

@TheHoopCentral Big finish 🏀

JayTakes

@SportsWithJay0

@TheHoopCentral Once he finds his rhythm good luck to the western conference

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Cooper Flagg helps lead Mavericks to victory over Raptors

Cooper Flagg proved why he was the top pick of this year's draft as he helped lead the Dallas Mavericks to their first win of the season on Sunday.

Looking at Flagg's first game, it was nowhere near what most were expecting, only putting up 10 points. Then, in his last game against the Washington Wizards, he had 18 points.

Fast-forward to Sunday against the Toronto Raptors, Flagg showed why he's capable of becoming a star in the NBA in the near future. The Mavericks rookie contributed 22 points, four rebounds, four assists and one block to help seal the deal for his team.

Carrying Dallas for the most part was Anthony Davis. Now in his second season with the Mavericks, the big man put up a double-double performance, with 25 points, 10 rebounds, three steals and two blocks. D'Angelo Russell also did all that he could as the team's sixth man, putting up 24 points, six assists, five rebounds and three steals.

With the Mavericks finally in the win column, they will try to use whatever momentum they've gained to try to beat the defending champion OKC Thunder on Monday.