The Cincinnati Bengals just got better on the defensive line.
Last year, the Bengals made leaps and bounds in overall defense. New defensive coordinator Mike Zimmer brought some fire and talent evaluation to the equation, and he was working under the constraints typical of a new defensive coordinator.
Zimmer had to deal with a lot of the players currently on the roster, and couldn't make too many extravagant changes to the scheme. All that being said, the Cincinnati Bengals went from being the 27th ranked defense in the league in 2007, to the 12th ranked defense in 2008.
That is without Keith Rivers for most of the season, due to a broken jaw.
With a year under his belt and another offseason, draft, and preseason, this defense should be one to watch out for.
Tank Johnson has not had a stellar career, but has shown flashes of brilliance. He ran into some trouble with the law, but has been clear of trouble, and has been said to have made a lifestyle change.
The Bengals now have addressed one of the biggest issues with their defense—getting to the passer. DE Antwan Odom was acquired last year to help get the passer, but he was injured, and never really had the oppurtunity to contribute.