General manager Ryan Poles relayed Sunday that Brisker (concussion) "wasn't making the progress we wanted," which is what caused the Bears to place the third-year safety on injured reserve Saturday, Courtney Cronin of ESPN.com reports.

The Bears placed Brisker (concussion) on injured reserve Thursday, Chris Emma of 670TheScore.com reports.

Brisker (concussion) won't play in Sunday's game versus Green Bay, Courtney Cronin of ESPN.com reports.

Brisker (concussion) has been ruled out for Sunday's game against New England.

Brisker (concussion) did not practice Wednesday.

Brisker (concussion) is not expected to clear protocols before Sunday's game against the Patriots, Brad Biggs of the Chicago Tribune reports.

Brisker (concussion) has been ruled out ahead of Sunday's matchup against the Cardinals.

Brisker (concussion) did not practice Wednesday, Dan Wiederer of the Chicago Tribune reports.

Brisker (concussion) has been ruled out ahead of Sunday's matchup against the Commanders.

Brisker (concussion) did not participate at practice Wednesday, Brad Biggs of the Chicago Tribune reports.