New York Knicks power forward Bobby Portis and Brooklyn Nets star point guard Kyrie Irving got into it over a loose ball on Friday at the Barclays Center.

Nets swingman Taurean Prince came to Irving's defense after he saw Portis trying to pick up Irving while the star guard was on the floor, looking to call a timeout:

This is what rivalry games are all about. The Barclays Center is filled with a lot of Knicks fans on Friday. Even though the Nets are the kings of New York City at the moment after signing Irving and Kevin Durant this summer, Knicks fans are still going to let their voices be heard.

Portis is a fierce competitor who doesn't back down from anyone. What is ironic about this minor scuffle is that Portis is wearing Irving's NIKE shoes.

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