Athlon Sports is going division by division, asking and (trying to) answering the biggest question for every team in the league entering the 2015 season.
Arizona: Can Carson Palmer stay healthy?
This team has won 21 games the last two seasons but was bounced early in the this year's playoffs because its quarterback was missing due to another significant knee injury. This team is talented enough at almost every position to win a Super Bowl and has a rising star of a head coach leading the way. But it plays in a nasty division and has a 35-year-old signal-caller that has missed at least six games in three of the last seven years. Palmer has to stay healthy for Arizona to win big this year.
St. Louis: Is the offensive overhaul going to work?
The defense is salty in St. Louis and is loaded with quality young talent. But this offense will look completely different in 2015. New coordinator Frank Cignetti has a new quarterback (Nick Foles), new running back (Todd Gurley), a reworked offensive line and even a new quarterbacks coach (Chris Weinke). Yet this unit still lacks in proven playmakers despite using numerous recent draft picks on skill position players. Should the offense come together quickly, this team will once again be one of the more underrated in the NFL. If not, Jeff Fisher is staring at a fourth straight losing season.
San Francisco: What is the personality of this team without Jim Harbaugh?
Say what you want about his quirky and bizarre personality, Jim Harbaugh is a winner. He won at the University of San Diego, he won at Stanford and he won big at San Francisco (and will win big at Michigan). Questions are swirling through the Bay Area after a mass exodus of coaches and players. Is Jim Tomsula equipped to be an NFL head coach? Can Colin Kaepernick develop into a leader and not an off-the-field headline maker? Can an aging collection of veterans and unproven youngsters maintain the level of success that the 49ers' brass seemed to under appreciate? Say what you want about Harbaugh, but his teams have always had an identity. What is the new identity going to look like in the Bay Area?
Seattle: How will the offensive line look?
Let’s be honest, there aren’t really any questions about this team. The defense is still nasty, Marshawn Lynch is happy, Russell Wilson is signed and has a new toy in Jimmy Graham. Pete Carroll and the 12th Man are still ready to rock. The offensive line may be the only area of concern in fall camp after Max Unger and James Carpenter departed this offseason. Look for Patrick Lewis and Alvin Bailey to step in and try to maintain stability up front. Otherwise, if this team can shake off the bad taste from the Super Bowl’s final possession, it will once again be one of the best teams in the NFL.