It looks like Antonio Brown received Mike Mayock's message.
After Brown missed practice Sunday over his ongoing helmet issue with the NFL, the Raiders general manager offered a brief statement to the media saying Brown needs to be "all-in or all-out."
The star receiver attended a team meeting Monday when the Raiders broke camp, and all eyes were on the Raiders practice facility in Alameda on Tuesday.
Brown went on to the field to participate in the walkthrough, but when the helmets came on, he went off.
Antonio Brown heads into the team's performance center as practice starts and helmets come on. pic.twitter.com/6hUg4jTKom— Scott Bair (@BairNBCS) August 20, 2019
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He then returned to stretch with the team.
AB re-joins the team during stretch. Still no helmet. (Y'all enjoying this play by play?) pic.twitter.com/6gcm467rVA— Scott Bair (@BairNBCS) August 20, 2019
He did not have a helmet with him during the media viewing period.
Head coach Jon Gruden spoke to the media after practice and said Brown practiced with a certified helmet and was running good routes.
"It's a certified helmet and he's all in and ready to go. That's my understanding," Gruden said. "I'm happy to have him out here. He's a great player."
While Brown's frostbitten feet appear close to healed, the four-time All-Pro selection still is in the middle of a fierce fight with the NFL over his helmet.
The helmet Brown has worn for his entire career, the Schutt AiR Advantage, recently was put on the prohibited list by the NFL, meaning Brown will have to find another helmet to his liking. The star wide receiver reportedly filed a second grievance against the NFL, asking for a 12-month grace period to find a new helmet since the Schutt AiR Advantage was just placed on the list.
Based on the helmet testing numbers, it appears unlikely Brown will win that case.
The Raiders' big offseason acquisition took part in only a portion of one practice during training camp, but he looked good going through warm-ups prior to the Raiders' preseason win over the Cardinals.
[RELATED: AB's helmet issue elicits strong Rich Eisen rant]
His saga likely will become the focal point of Tuesday night's "Hard Knocks" episode where Brown claims he feels like an "enemy of the f--king state," and complains there's "too much noise" surrounding his helmet conundrum and feet ailment.
The Raiders head to Winnipeg on Wednesday to prepare for their third preseason game. It seems unlikely Brown will suit up for Thursday's game with the Packers, so his real Raiders debut likely will come Week 1 against the Broncos, providing the helmet fight is solved.
