Outlook: Miami has improved an already excellent defense by adding linebacker Junior Seau, safety Sammy Knight and tackle Jeff Zgonina. New England added pass-rushing linebacker Rosevelt Colvin, but there are concerns about the running game. Buffalo has improved its defense, but Josh Reed must prove he's a capable No. 2 receiver. The Jets lost too many key players.
Outlook: Pittsburgh's shaky pass defense should get a boost from safety Troy Polamalu, the team's first-round pick. Baltimore has concerns at quarterback, but its strong defense has gotten stronger. A possible quarterback controversy, suspect linebackers and a weakened secondary mean Cleveland won't return to the playoffs. Marvin Lewis has Cincinnati going in the right direction, but it will take time.
Outlook: The Titans got worse, thanks to losing linebacker Randall Godfrey, defensive linemen John Thornton and Henry Ford and cornerbacks Donald Mitchell and Dainon Sidney. The Colts got younger and more athletic on defense and should be more consistent in coach Tony Dungy's Cover 2 scheme.
Depending on the health of quarterback Mark Brunell and running back Fred Taylor, the Jaguars could go 10-6 or 6-10. Few teams made more upgrades on defense. The Texans should be improved with the addition of rookie receiver Andre Johnson, who provides a vertical threat.
Outlook: Oakland is aging, but cornerbacks Phillip Buchanon and Charles Woodson are healthy. That means the Raiders can play more aggressive blitz schemes in front of their man coverage. Kansas City will be more athletic on defense, but can Priest Holmes stay healthy?
In Denver, Jake Plummer will have the supporting cast he never had in Arizona, but the defense is not up to par. The Chargers will be more explosive on offense with receiver David Boston, but their cornerbacks and linebackers are inexperienced.
Outlook: The Eagles have taken a step backward because of special teams losses, but they still are the class of the division, thanks to their attacking man-to-man defense. The Giants have bridged much of the gap, though.
In Washington, coach Steve Spurrier got the upgrades he needed on offense. It always seems to take two seasons for Bill Parcells to turn around a franchise, and it doesn't look like that process will go faster in Dallas.
Outlook: With Brett Favre, a maturing receiving unit and a healthy offensive line, the Pack again will lead the way. The Vikings, who addressed defensive needs, should build on last season's finish. The 1-2 punch of quarterback Joey Harrington and receiver Charles Rogers will make for a more balanced offense in Detroit.
The Bears are not very talented. Kordell Stewart is a marginal starting quarterback, their offensive line is decimated, their receivers are under-achievers, and they have one of the worst groups of cornerbacks in the NFL.
Outlook: With Peerless Price at receiver, the Falcons can spread defenses vertically, making quarterback Michael Vick even more dangerous. The Falcons will take the regular season, but the Bucs will surge heading into the playoffs.
The Saints upgraded at left tackle (Wayne Gandy), tight end (Ernie Conwell), defensive tackle (Johnathan Sullivan), free safety (Tebucky Jones) and cornerback (Ashley Ambrose), but until quarterback Aaron Brooks proves his shoulder is healthy, they are an enigma. The Panthers' defense could be stifling, but quarterback Jake Delhomme needs time.
Outlook: With bookend tackles Orlando Pace and Kyle Turley, quarterback Kurt Warner and the Rams' offense are poised for a comeback. Under new defensive coordinator Ray Rhodes, the Seahawks will be more aggressive. San Francisco doesn't have enough weapons to take double-teams away from receiver Terrell Owens. The Cardinals have no weapons at receiver and an offense built around aging running back Emmitt Smith.
AFC wild cards: Kansas City and New England.
NFC wild cards: Tampa Bay and Seattle.
AFC championship: Oakland over New England.
NFC championship: Tampa Bay over St. Louis.
Super Bowl: Oakland over Tampa Bay.