Brett Favre sustained a concussion against the Giants when William Joseph knocked him to the ground. Favre sat out two plays before returning to throw a 28-yard touchdown pass to Javon Walker. Backup Doug Pederson went in on the next series as medical personnel evaluated Favre on the sideline. Favre started his 212th straight game. ... Titans QB Steve McNair didn't play against the Chargers with a bruised sternum, and Billy Volek started. ... Bears LB Brian Urlacher missed his second straight game with a pulled hamstring. ... Raiders RB Tyrone Wheatley dinged his left shoulder in the second quarter and was held out as a precaution. ... Jaguars T Mike Pearson damaged ligaments in his left knee against the Colts and could be out for the year. ... Carolina LB Mark Fields, who missed all of last season with Hodgkin's disease, left the game against Atlanta with back spasms. RB Rod Smart, aka "He Hate Me," sprained his left knee on a kickoff return in the same game. ... Atlanta RB Warrick Dunn strained his left hamstring against the Panthers. ... Steelers LB Kendrell Bell missed his fourth consecutive game with a groin injury. His replacement, Larry Foote, had the first sack of his career and also led the team with nine solo tackles and 11 total tackles.