Those two along with Michael Hawthorne were injured in Friday's practice. Hawthorne tried to break up a pass but wound up colliding with Carroll. Hawthorne is listed as probable with a sore ankle but Carroll wound up straining his groin. McKenzie, meanwhile, tweaked his hamstring during Friday's workout.
With the injuries, Hawthorne will start with Al Harris for the third straight week. In reserve will be rookie third-round pick Joey Thomas and impressive former Canadian Football League player Jason Horton. Neither of the two has played an NFL regular-season down, however.
McKenzie was expected to get his first start of the season, just a week-and-a-half after ending his 46-day holdout. With his and Carroll's absence, the Packers will be without two of their top four cornerbacks today against Carolina's prolific passing attack.