"That's probably one of the things we worry about most, is the contact part of the game and the tackling part," defensive coordinator Bob Slowik said.
For now, Slowik said, Michael Hawthorne will remain the starting left cornerback. After a ragged preseason, Hawthorne generally had a good night against the Panthers.
"Mike Hawthorne played as good of game as we had in the secondary on Monday night," Slowik said. "So, it's not like, all of a sudden, Mike McKenzie is just automatically going to take over that role. He's going to have to earn that position, through practice or his performance in the game when he gets in there."
McKenzie got some work in the Packers' dime defensive package Thursday.