Aaron Rouse, who replaced both Bigby and fellow safety Nick Collins at times on Sunday, will get the start against the Bengals. Rouse had three tackles against the Bears, Bigby had six before exiting in the fourth quarter.
"I thought Aaron played well on Sunday night and he'll get an opportunity to start this week," McCarthy said. "Atari Bigby had a significant injury. We're looking at a timeframe of at least four weeks."
The injury is another setback for Bigby, who hasn't been healthy enough for long enough to reprise his role from late 2007 as a hard-hitting, playmaking safety. He started only six of 16 games last season with a laundry list of injuries, starting with an ankle injury in the preseason, a hamstring injury in Week 2 and a shoulder injury that ended his season a month early.
Injury updates for Jennings, Raji, Crosby
Also on the injury report for the Packers: cornerback/kick returner Will Blackmon, thigh, full participation; kicker Mason Crosby, abdominal strain, limited participation; running back Brandon Jackson, ankle, did not participate; receiver Greg Jennings, wrist, limited participation; defensive lineman B.J. Raji, ankle, full participation.
Jennings said his injury occurred on about the 10th play of the game, when he stopped to change direction, slipped and jammed his wrist into the ground.
"Initially, I thought, ‘oh-oh,'" Jennings said.
With Thursday being the "heavy" day in the practice week, that will be a big test to determine the availability of Raji and Blackmon, both of whom did not play against Chicago.
"What they said was the last time they saw me at practice, they didn't really like how I looked," Raji said of missing the Bears game. "So, hopefully, I can persuade them to where they feel comfortable to put me in the game."
Crosby said he felt fine on Sunday but could feel the injury on Monday and Tuesday. That area, like for all athletes, is a vital part in producing power, so neither he nor the training staff want the injury to be a "long-term thing." The plan is to hopefully kick on Friday and play on Sunday.
"I think that's the concern," Crosby said. "It's like an arm on a quarterback. If anything in that area, you want to be safe before anything else."
Bengals injury report
For the Bengals, cornerback David Jones and first-round right tackle Andre Smith are out with foot injuries. Also on the report: defensive tackle Jonathan Fanene, not injury related, did not participate; offensive tackle Scott Kooistra, knee, full participation; halfback Brian Leonard, chest, limited participation; and starting left guard Nate Livings knee, did not participate. Bengals coach Marvin Lewis told reporters in Cincinnati that Livings probably will not play.
School of ‘Hard Knocks'
HBO's "Hard Knocks" spent training camp in Cincinnati, following the antics of Chad Ochocinco and the growing pains of a team that finished 4-12 last season. Ochocinco and Bengals coach Marvin Lewis were pleased with how the series turned out, even with cameras anywhere and everywhere at all times.
"I think a lot of people think the NFL is all hoo-rahs," Ochocinco said. "This is a business. This is a tough business. ‘Hard Knocks' showed a different side of that, letting people know that this is really serious."
The Packers could have been the team featured in 2007 but turned it down, in part because of the youth of the team. One difficult thing shown in this year's series was Lewis making his final cuts.
"I would not be comfortable having a camera in the room at that particular time," said McCarthy, who noted the video department taped the shows "just in case" there was something that could be gleaned. "It's a very personal time, and that's something personally I would not be willing to share with a camera, frankly."
Packers quarterback Aaron Rodgers joked that the team didn't need the distraction and said animated linebacker Brady Poppinga would be a star on the series.
"Because we wear helmets, we're not as recognizable," Rodgers said. "And it gives guys who maybe are not the faces of the franchise the opportunity to really get their personality and character out there. I think it's a really good thing for the NFL. That's why it's been successful the last couple of years they've been doing it."
— For the fourth consecutive year, the Packers are the youngest team in the league with an average age of 25.7 years, according to the NFL. This week's opponent, Cincinnati, is the least-experienced team, with an average 3.77 years of experience. Green Bay is next with 3.81.
— Bob Bratkowski, Cincinnati's offensive coordinator, is the son of longtime NFL quarterback Zeke Bratkowski, who played seven years for the Packers.
— Speaking of father-son relationships, former Packers tight end Paul Coffman's son, Chase, is a rookie tight end for the Bengals. Coffman, a third-round pick, is listed third on the depth chart and did not play against Denver.
— Sunday's game against Cincinnati will come 17 years to the day of Brett Favre replacing an injuring Don Majkowski and hitting Kitrick Taylor with a 35-yard touchdown pass in the final minute to beat the Bengals.
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Bill Huber is publisher of Packer Report magazine and PackerReport.com and has written for Packer Report since 1997. E-mail him at firstname.lastname@example.org, or leave him a question in Packer Report's subscribers-only Packers Pro Club forum. Find Bill on Twitter at twitter.com/packerreport and Facebook under Bill Huber.