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.