"I'm not playing this hand as well as I can," Blache said. "This is not the same hand we had before. The secret is playing the hand well."
The latest injury is a sprained right knee by Warrick Holdman. His status will be re-evaluated Monday or Tuesday.
"The hand is good enough," Blache said. "The hand was good enough to win last week and the hand was good enough to win today."
Colvin sees no problem with Caldwell stepping in for Holdman if there is a need. Caldwell started last year for Philadelphia.
"That's why we play guys to be backups to be on the team," Colvin said. "We pay Mike enough money that he can come out there and get the job done. He did it in Philly last year. He's done it his entire career. So there was no lack of talent out there. There's no reason why we should be upset or scared or start to panic."
The Bears' remaining schedule includes seven teams with 3-1 records.