Cutler suffered a concussion Sunday not on an illegal hit from Houston's Tim Dobbins. Dobbins was fined $30,000 for the hit that knocked Cutler out for the second half of the game.
Campbell took over in the second half, and didn't really impress. He threw for 94 yards in the losing effort, but failed to put points on the board.
"It feels good to get back in there and play, but you never want to have the opportunity to play because of someone's injury. But we understand the position we play; those things occur sometimes," said Campbell, who said he was told he would start before Thursday's practice.
Monday will be his first start since Oct. 16, 2011, when he suffered a broken collarbone while playing for the Oakland Raiders. Right after that injury, the Raiders traded for Carson Palmer who has started every game since.
Last year, Cutler got hurt after the Bears began the year 7-3, and the team failed to make the playoffs after finishing the year 1-5. Caleb Hanie and Josh McCown didn't get the job done for Chicago, which is a big reason why Campbell was signed this offseason.
"If you look at what happened to the Bears last year, that's why he's here," Bears wide receiver Brandon Marshall said. " He has a big arm, and he has a great feel for the game.
"Jason's played a lot of football, he's an established vet, he's the next guy up and more than capable. We're fortunate enough to have a starting quarterback as our backup. I'm excited and really at ease to have him in our huddle, because he makes it so much easier."
Marshall and Cutler have reestablished their chemistry from their days in Denver, and the combination is a big reason the team has jumped out to a 7-2 start.
Head coach Lovie Smith didn't say whether or not Cutler had been medically cleared to play or if he will travel with the team to San Francisco.
"He's not playing this week and that's about as much as I'm going to go into it," Smith said. "He's getting better and we're hopeful for next week. I think that should be enough for you all to go on right now."
Campbell has started 70 games with the Washington Redskins and the Raiders from 2006-11 after being Washington's first-round pick in the 2006 NFL Draft. His experience is why Chicago brought him in as the team's primary backup on a one-year deal.Tags: Brandon Marshall, Carson Palmer, Chicago, Chicago Bears, Football, Jason Campbell, Jay Cutler, Lovie Smith, NFL, Oakland Raiders, San Francisco 49ers, Tim Dobbins, Washington Redskins