Packers running short at LB: Smith doubtful

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The backup to the backup is now on the field for the Packers.

Inside linebacker D.J. Smith left the game with a right knee injury and is doubtful to return.

He was replacing Desmond Bishop, who was lost for the year to a hamstring injury before the start of the regular season.

That had the Packers down to Brad Jones in the middle. Most of the former seventh-rounder’s experience is on the outside.

The good news is, Aaron Rodgers has staked them to a 21-10 halftime lead.

UPDATE 10:17 p.m. ET: Neither Smith nor Nick Perry, who left earlier with a knee injury, will return.