BOSTON (CBS) — All throughout the joint practice on Tuesday between the Chicago Bears and New England Patriots, tensions were high, as the two teams couldn’t help but get physical with each other just one day after scrapping on the Gillette Stadium practice fields.

Eventually, something had to give, and in this instance, it was the patience of Patriots center Bryan Stork.

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The third-year lineman made himself the second Patriots player in as many days to get booted from practice by head coach Bill Belichick, after Stork responded to a post-whistle shove from John Timu by returning the favor and looking ready to start a fight.

For Stork, it’s the second time this year that he’s been ejected from practice for fighting. He was kicked off the practice field back in June for scrapping with teammate Woodrow Hamilton. Stork is currently in the midst of a position battle with second-year center David Andrews, who filled in for Stork for the first half of last season before Stork resumed his starting role.

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On Monday, Patriots cornerback Malcolm Butler was given the heave-ho from practice by Belichick after getting into a fight with Bears receiver Alshon Jeffery. The Patriots have a zero-tolerance policy on fighting in the joint sessions.

Some of the physicality was upped at Tuesday’s practice, with Matthew Slater tackling Kieren Duncan (and then apologizing), Martellus Bennett getting into a wrestling match with Lamarr Houston, and Julian Edelman getting hit hard by Harold Jones-Quartey, with Aaron Dobson coming to Edelman’s side for support.

Clearly, the rules for limited contact in practice have proven difficult for these two teams to follow. They’ll be free to hit each other however they want on Thursday night in the second preseason game of the summer for both teams.

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The Patriots and Bears kick off at 8 p.m. on Thursday night.