Details behind the incident between Antonio Brown and Oakland Raiders general manager Mike Mayock began to emerge Friday as the wide receiver’s status for Week 1 hangs in the balance.

According to multiple reports, Brown and Mayock got into a heated argument during practice Wednesday in which Brown threatened to punch Mayock in the face. ESPN reported that Brown used “disparaging language” toward Mayock.

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A Raiders source told ESPN that Brown called Mayock a “cracker” and used a slew of “cuss words” toward the general manager. Pro Football Talk also reported the word “cracker” was used.

Mayock reportedly attempted to keep calm during the entire situation.

“[Mayock] was like, ‘I’m cool, I understand your displeasure,'” a source told ESPN. “[Mayock] sort of just like ... just walked away because he saw it escalate.”

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ESPN later reported that Brown issued “an emotional apology” at a team meeting Friday.

Tensions between Brown and Mayock reportedly came to a head after Brown shared his apparent displeasure with Mayock for sending him a letter about the possible fines the wide receiver faces for missing a practice and a walkthrough.

Brown shared the letter Mayock sent him and wrote on his Instagram Stories: “WHEN YOUR OWN TEAM WANT TO HATE BUT THERE'S NO STOPPING ME NOW DEVIL IS A LIE. EVERYONE GOT TO PAY THIS YEAR SO WE CLEAR.”

The letter said Brown was going to be fined $40,000 for an unexcused absence from practice on Aug. 18 and $13,950 for skipping a walkthrough in Winnipeg on Aug. 22.

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Despite all the drama, head coach Jon Gruden told ESPN's Adam Schefter Brown will play against the Denver Broncos on Monday night and won't be suspended.