Davis is the second defensive coordinator fired by Whisenhunt in his four seasons in Arizona. Clancy Pendergast was dismissed after the team's run to the Super Bowl in the 2008 season.
Davis was promoted from linebackers coach to defensive coordinator following Pendergast's dismissal. The team announced Davis' firing Thursday in a two-sentence statement.
The Cardinals were 5-11 and last in the NFC West after winning the division the previous two years. It was the first losing season since Whisenhunt took over.
Arizona went 10-6 in Davis' first season as coordinator a year ago, with the team fifth in the NFL in fewest points allowed. But the Cardinals gave 90 points in two playoff games, and Davis knew the pressure was on this season. The departure of big-play linebacker Karlos Dansby via free agency didn't help.
Arizona's offense, which has yet to have any staff changes, was even worse, ranking 31st in total offense, 31st in passing and 32nd in rushing.
Mike Miller is the passing-game coordinator and called an increasing number of plays late in the season. Russ Grimm is running-game coordinator.
Whisenhunt said Monday that the plan, as with Haley, was to have Miller call an increasing number of plays. The former offensive coordinator for the Pittsburgh Steelers, Whisenhunt said he is considering relinquishing play-calling altogether, but he enjoys that part of his duties.
Copyright 2011 by The Associated Press