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Giants-dolphins Joint Practice Takeaways: Big Day For Defense, And Jaxson Dart

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Giants’ defensive lineman Marlon Davidson wipes sweat from his brow during Thursday’s practice against the Miami Dolphinds. | Icon Sportswire via Getty Images

The New York Giants joint practice vs. the Miami Dolphins featured dominant New York defense, intense heat, and, of course, a few scraps when the physicality got out of hand. Here are some of the takeaways from Giants head coach John Harbaugh and a handful of Giants’ players.

Harbaugh said he felt the Giants were leaving the practice better than when they started it.

‘Dominant’ defense

Let’s let Brian Burns tell us:

Brian Burns said the Giants defense was "dominant." They could do better but the Dolphins couldn't stop them.

Burns was told they had six sacks. He disagreed. He said it was more. pic.twitter.com/dNxcGa9rxX

— Jordan Raanan (@JordanRaanan) August 20, 2026

Love this line from Burns:

“We don’t wait to get punched in the mouth by offensive lines.”

If you check our live updates post, Miami beat writers were apoplectic about the Dolphins’ offensive ineptitude against the Giants.

Jaxson Dart’s day

Giants quarterback Jaxson Dart appears to have had a good day against the Miami defense.

This is the day we've been waiting to see from Jaxson Dart this summer. He went 16 of 22 passing. Two of the incompletions were spikes. One interception.

But he hit several downfield throws to Malachi Fields and Isaiah Likely. Looked in control. #Giants#Dolphins

— Jordan Raanan (@JordanRaanan) August 20, 2026

Dart thought he “played clean”, and that it was good to play against a different defense.

Jaxson Dart after a strong joint practice outing for the Giants. pic.twitter.com/AzugtIwBXu

— Paul Schwartz (@NYPost_Schwartz) August 20, 2026

Charlotte Carroll of The Athletic had Dart at 17 of 21 with an interception.

I shouldn’t have been surprised

There were reports that newly-signed running back Najee Harris took a few 11-on-11 reps.

More to come once interview transcripts are made available.