NAPA --Antonio Brown touched down in the Napa Valley on Friday in a hot air balloon, marking his grand entrance to Raiders training camp.

He won't make one Saturday at the Silver and Black’s first full-squad practice, maybe not for a little while.

The superstar receiver was placed on the non-football injury list on Friday, the team announced.

A league source told NBC Sports California that the undisclosed injury is minor and stressed that the Silver and Black are not concerned about this physical setback. The Bay Area New Group states Brown could miss roughly a week's practice time in training camp.

In the grand scheme, Brown missing a week or even a bit longer isn't a big deal. He isn't scheduled to play much, likely not at all, this preseason and will have plenty of time to build proper chemistry with quarterback Derek Carr. 

Brown being placed on the NFI list meaning the ailment occurred Brown was training on his own, not in any team-related activity.

Brown’s arduous training regimen is well documented by his social media team, which films him working out while jet setting across the country and through Europe.

Raiders general manager Mike Mayock was asked in a Friday morning press conference about player injured entering camp, and he mentioned Denzelle Good (back) starting on the physically unable to perform list and fullback Keith Smith (knee) going on NFI. He did not mention Brown, though Gruden did say eariler in the presser that he expects some drama from No. 84. Between the hot-air balloon entrance and this mysterious injury, Brown has provided plenty of that. 


Check back for details on this developing story.