Oakland Raiders Injuries
Brown's second helmet-related grievance against the NFL likely will be heard Friday in front of an arbitrator, Ian Rapoport of NFL Network reports.
Williams (undisclosed) didn't practice Sunday, Scott Bair of NBC Sports Bay Area reports.
Mauro is dealing with a hamstring injury that forced him to miss Thursday's preseason game against the Cardinals, Scott Bair of NBC Sports Bay Area reports.
Nelson suffered a sprained ankle during Thursday's preseason game against the Cardinals, Scott Bair of NBC Sports Bay Area reports.
Crosby underwent surgery on his broken hand Tuesday but could be back in time for the team's third preseason game against the Packers, Scott Bair of NBC Sports Bay Area reports.
Lawson officially received a four-game suspension for violating the league's substance abuse policy Monday, Nick Underhill of The Athletic reports.
Johnson left Saturday's preseason win over the Rams early after suffered a concussion and didn't return, Paul Gutierrez of ESPN.com reports.