Antonio Brown Upset About His Helmet, Files Grievance With NFL

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Brown has not participated in 10 of the 11 Raiders' training camp practices, and for one of the oddest reasons you'll ever hear - having suffered severe frostbite on the soles of his feet caused by wearing inappropriate footwear in a cryotherapy machine.

If Brown can't use the helmet he wants, there is no telling what he'll do as he has proven himself to be quite unpredictable in the past.

Wide receiver Antonio Brown has told the Oakland Raiders that unless he can wear his old helmet, he will not play football again, league sources told ESPN on Friday.

Brown reportedly has "troubled" the Raiders for a while due to a fixation to wear a helmet that no longer is approved by the NFL,'s Mike Silver reported Friday, citing sources.

Raiders traded a third- and fifth-round pick to acquire Brown from the Pittsburgh Steelers, ultimately signing him to a three-year, $50.1 million deal with $30.1 million guaranteed.

All of this was conveyed to Brown at the team's training facility in Alameda, California, a few days before the start of Phase Three OTAs - the first time players are allowed to wear helmets during on-field workouts. "He hasn't been here for awhile, and no one knows where he's at".

The league is enforcing new helmet safety protocols this season.

The following day, Brown showed up in Alameda and acted like nothing had happened, accepting the new helmet from an equipment manager without protest and completing the workout.

And so, we come to Brown's potential retirement if the helmet issue doesn't go his way. He is expected to have a hearing in front of an arbitrator next week, at which point a determination will be made on whether or not he can wear his preferred helmet.

From an uncomfortable cranium to frostbitten feet, Brown literally has issues from head to toe in 2019, and it's only August.