Few insiders know the NFL better than RealGM's Jeff Risdon, who is 21 teams into his team-by-team season previews. Click on the links below for the most in depth and readable previews anywhere. - Oakland Raiders The Raiders are a tough cloud to forecast. There is a great deal of potential here on defense and with JaMarcus Russell and the running backs, but it's tough to give them the benefit of doubt until they prove it. - New York Giants The Giants have some question marks on offense, but their defense has the potential to be special. - Cincinnati Bengals The return of Carson Palmer and upgrades to the OL should fix the offense, but there are still legit questions. The defense is loaded with young talent, but it must continue to develop and make plays. - Indianapolis Colts If it wasn't for Peyton Manning, the Colts would have a difficult time dealing with an overhauled coaching staff and the loss of Marvin Harrison. - Philadelphia Eagles Many are high on the Eagles heading into the season, but Jeff points out that a lot will have to fall in place for them to piece together another playoff run. - Kansas City Chiefs The Chiefs are in the middle of a massive rebuild, and they may regret getting rid of Tony Gonzalez. - San Diego Chargers If their injured stars are healthy, the AFC road to Miami will probably go through San Diego. - Atlanta Falcons The Falcons are for real, but a tough schedule could keep them from making their second consecutive playoff appearance. - New York Jets The 2009 season might not go as planned, but the future is bright for the Jets with Mark Sanchez at quarterback. - Seattle Seahawks There are a lot of question marks regarding Seattle's health and depth on the offensive line, but a return to the playoffs is possible. - New Orleans Saints Reggie Bush isn't going to be the running back many want him to be, but he's still one of the most dangerous players in the game. Keep checking in daily as Risdon takes us on a tour around the NFL. - Click here to read Version 1.0 of Risdon's NFL Season Previews