Star receiver Antonio Brown returned to training camp with the Oakland Raiders on Monday https://www.raiderslockerroom.com/authentic-antonio-brown-jersey , a day after being given an ultimatum by general manager Mike Mayock to be "all in or all out."Brown took part in meetings in Napa before the team broke camp, a person familiar with the situation said on condition of anonymity because the team didn't release details.Brown didn't attend practice Sunday as he works to find a helmet that he's comfortable using and that meets safety standards set by the NFL and NFLPA. Brown lost a grievance last week seeking to use the Schutt Air Advantage helmet he has used throughout his career because it was too old to be certified as safe.He had hoped to find a newer version of his preferred helmet that could be approved but the one he submitted failed a safety test conducted by the league and union, a second person said on condition of anonymity because test results weren't released.Agent Drew Rosenhaus told ESPN earlier Monday that he expects Brown to be back practicing soon and that they are looking into "all options right now to resolve the helmet issue." The Raiders' next practice will be Tuesday."Antonio is very genuine," Rosenhaus said. "He wants to be there. He wants to be a part of the team. He wants to practice. But he'd also like to do it with the helmet that he's worn his entire life. He wore this helmet in pee-wee football, high school football, in college at Central Michigan. And he also wore this helmet his nine-year (NFL) career."This is his life. He's risking everything. He's got a family. He's had a concussion before. This helmet has kept him safe. He's had brutal hits. And we're just trying to find a way to work it out. We've worked very closely with the Raiders, we've worked very closely with the NFL. But I hope people can appreciate this is not a simple issue. The helmet is the most important piece of equipment and he's had the same one every single snap he's played in his football career. This is a major issue for him."Brown has yet to take part in a full practice all training camp for the Raiders, missing time because of frost bite on his feet suffered in a cryotherapy accident in France and now over the helmet issue.That led to Mayock's public frustration Sunday when he said the Raiders had supported their star player but had "exhausted all avenues of relief.""So from our perspective, it's time for him to be all in or all out," Mayock said. "So we're hoping he's back soon. We've got 89 guys busting their tails. We are really excited about where this franchise is going and we hope A.B. is going to be a big part of it starting Week 1 against Denver."Brown had 686 catches and 9,145 yards receiving the past six seasons in Pittsburgh, the best marks ever for a receiver in a six-year span. But he still wore out his welcome with the Steelers after leaving the team before a crucial Week 17 game last season and was able to be acquired by Oakland in March for the small price of third- and fifth-round draft picks.The drama that surrounded Brown in Pittsburgh didn't stop upon his arrival with the Raiders even though he was given a hefty raise with a three-year contract worth $50.125 million.Brown arrived at camp with frost-bitten feet, sending him to the non-football injury list. He was activated on July 28 and participated in parts of two practices before leaving the team to get treatment on his feet and to deal with the grievance with the NFL. Brown returned to the Raiders on Aug. 13 but still hasn't participated in a full practice all of training camp. Raiders News Five Reasons Why Oakland Raiders Make Sense For 'Hard Knocks'The Oakland Raiders have been speculated as a potential team for this summer's "Hard Knocks' show on HBO. Here are five..." />Skip to main contentclockmenumore-arrownoyesHorizontal - WhiteSilver And Black Pridean Oakland Raiders communityLog In or Sign UpLog InSign UpFanpostsFanshotsRaidersOddsAboutMastheadCommunity GuidelinesStubHubMoreAll 322 blogs on Horizontal - WhiteFanposts Fanshots Raiders StoriesScheduleRosterStatsYahoo Raiders NewsYahoo Raiders Team PageYahoo Raiders ReportYahoo Raiders Depth ChartYahoo Raiders TransactionsYahoo Raiders PhotosOdds About Masthead Community Guidelines StubHub ✕Silver Mining 5/26: 5 reasons why ‘Hard Knocks’ makes sense for Oakland RaidersNew,50commentsPDTShareTweetShareShareSilver Mining 5/26: 5 reasons why ‘Hard Knocks’ makes sense for Oakland RaidersKirby Lee-USA TODAY SportsRaiders News Five Reasons Why Oakland Raiders Make Sense For 'Hard Knocks'The Oakland Raiders have been speculated as a potential team for this summer's "Hard Knocks' show on HBO. Here are five reasons why the Raiders would be a great choice.Doug Martin ready, willing to mentor Raiders first-round pick Josh Jacobs | NBCS Bay AreaDoug Martin has been a featured back for years in the NFL. Now, he's ready to be a role model to a Raiders rookie.Raiders become more explosive on offense with WRs Brown and WilliamsRaiders WRs Antonio Brown and Tyrell Williams provide an explosive element to Raiders' offenseRaiders thinking deep thoughts with new WR Tyrell Williams - SFChronicle.comThe deep pass was not a prominent part of the Oakland Raiders offense last season. Tyrell Williams, who has four career touchdown catches of 75-plus yards Womens Derek Carr Jersey , hopes to help improve the vertical passing game in 2019.AFC WestHow improved do you think the Chargers defense is from this offseason? - Bolts From The BlueThe 2019 Los Angeles Chargers (save a late signing and eventual cuts) are now in place. And defensively, they have made some big changes. They were already one of the National Football League’s...Joey Bosa, now fully healthy, looks “awesome” – ProFootballTalkJoey Bosa was the favorite for defensive player of the year to open last season. But the Chargers defensive end missed the first nine games with an injured foot. He's now healthy, and although he weighs the same as last season, his 270 pounds includes more muscle, Bosa said.Andy Reid: I don’t know if Chris Jones, Chiefs are talkingDefensive tackle Chris Jones has not been with the Chiefs for their voluntary work this offseason as he does the contract dance we've seen many players do over the years. Jones is headed into the final year of his rookie deal and is looking to cash in on a 15.5-sack 2018 season with a long-term [Chiefs second-year DL Breeland Speaks in for versatile role in 2019Are the Chiefs preparing Breeland Speaks to play more defensive tackle this season? It looks and sounds like it.Broncos need Courtland Sutton, DaeSean Hamilton to flourish quickly - Denver Broncos Blog- ESPNWith Emmanuel Sanders still rehabbing, second-year receivers Sutton and Hamilton will likely lead the way for a new Broncos offense.Why isn’t Steve Foley in the Denver Broncos Ring of Fame? - in interceptions needs to get this distinction.NFL NewsNFL: Next collective bargaining agreement comes down to one thingThere's two years left on the NFL's current collective bargaining agreement, but the next deal hinges on several issues. But money towers over it all.Matt Miller's Top Franchise-Changing NFL Rookies of 2019 | Bleacher Report | Latest News, Videos and HighlightsEvery fan hopes theNFLdraft will bring their favorite team a new load of talent and that one (or more) of those picks will change the franchise. Tom Brady changed the New England Patriots...Top 25 NFL players under age 25: Mahomes No. 1 in landslide, Mayfield finishes as third-highest ranked QB - CBSSports.comNo team has more than two players on the list, but the Browns and Chiefs both have two in the top 10NFL: Adam 'Pacman' Jones announces retirementAdam 'Pacman' Jones spent 12 NFL seasons with the TennesseeTitans, Dallas Cowboys, Cincinnati Bengals and Denver Broncos.