Cleveland Browns offensive right tackle John St. Clair was a 16-game starter at left tackle for the Bears last season, and he started at both tackle positions a total of nine games for the Bears in the previous three seasons.
Former teammates Alex Brown and Adewale Ogunleye, who practiced against St. Clair for four years, weren't exactly effusive in their praise of him. But both agreed effort wouldn't be a concern.
"It's going to be fun going against him," said left end Ogunleye, who will go head to head with St. Clair. "I'm just going to say that he tries hard. He's the kind of guy that goes in every game and busts his (butt) - excuse me, busts his tail.
"He's the kind of guy that you want on your team, so he's a good guy."
Brown had similar "praise."
"Everybody knows about St. Clair," Brown said. "He's going to try really hard."
St. Clair signed with the Browns as an unrestricted free agent last off-season for $9 million over three years, significantly more than the Bears were offering.
Musical linebackers: Pro Bowl weak-side linebacker Lance Briggs seemed to confirm the reports that Hunter Hillenmeyer will flip-flop position with Nick Roach on Sunday, with Hillenmeyer moving to middle linebacker and Roach taking over at strong-side linebacker.
"You can't be at Mike (middle linebacker) and be a quiet presence," Briggs said when asked about Hillenmeyer. "You have to be a vocal person. I've been playing with (Hillenmeyer) for a long time.
"It's always calming to be playing with a guy you've been playing with for a long time."
Mistake prone: Offensive coordinator Ron Turner's patience has been worn thin by physical and mental mistakes. Jay Cutler has thrown 10 interceptions, the Bears have fumbled 12 times (losing 3), and they've committed 37 penalties (5 more than their opponents).
"We've got to quit hurting ourselves," Turner said. "That's what I'm frustrated with. We're doing a lot of good things, and I really like this team. We've got a good football team. When we stop hurting ourselves we'll be consistently good.
"That needs to stop now, definitely by now. It's not just the interceptions you see and the turnovers. There are some mental things. Sometimes guys are trying to do too much. I keep telling them, 'You don't have to do too much.' Just execute."
Injury update: Linebacker Lance Briggs (shoulder), defensive tackles Tommie Harris (knee) and Israel Idonije (knee), safety Danieal Manning (foot) and running back Adrian Peterson (knee) all participated fully in Thursday's practice and are expected to play Sunday, as is defensive end Adewale Ogunleye (ankle), who was limited.
Defensive tackle Matt Toeaina (calf) did not practice and isn't expected to play.