Who will win it all? Yeah, that's definitely on the minds of fans as the NFL season nears. But that's far from the only thing to think about in 2013. Including an abundance of talented young quarterbacks and a series of coaches with something to prove, there are plenty of storylines to follow during the coming 20-plus weeks. Which is the biggest? Click on the images below to set your rankings!

NFL storylines in 2013

Eagles

Eagles

Chip Kelly brings a new system to Philadelphia, where Michael Vick will run it -- for now, at least.

Joe Flacco

Joe Flacco

Did Joe Flacco make the leap from good to great? Or was his Super Bowl run an aberration? He'll have to prove his worth with a depleted supporting cast.

Robert Griffin III

Robert Griffin III

Robert Griffin III was the league's best rookie a year ago, but a late-season knee injury has the questions swirling as 2013 begins.

Hard hits

Hard hits

Concern over concussions continues, and now the league is looking into low hits on defenseless players.

Jets

Jets

Who will win the QB battle? Does it even matter? Rex Ryan might be in his final days in Gotham.

Colin Kaepernick

Colin Kaepernick

It's Colin Kaepernick's first full season under center in San Francisco. Will he live up to the promise he showed in 2012?

Cam Newton

Cam Newton

This could be a make-or-break year for Cam Newton, who lit things up as a rookie but regressed in 2012.

Patriots

Patriots

Wes Welker left, and that was just the beginning for New England, which must rebound from the shocking Aaron Hernandez situation.

Sean Payton

Sean Payton

Suspended a year for Bountygate, Sean Payton returns to coach the New Orleans Saints. Can he get them back on track?

Adrian Peterson

Adrian Peterson

AD rushed for an astronomical 2,097 yards in 2012 -- on a mending knee. What will we see this time around?

Andy Reid

Andy Reid

Fired by the Eagles, it didn't take long for Andy Reid to find work. Now he has the moribund Chiefs franchise pointed upward.

Darrelle Revis

Darrelle Revis

Sent away after being dominant with the Jets, Revis Island migrates to Tampa Bay. Can the cornerback return to form and make the Buccaneers contenders?

Snow Bowl?

Snow Bowl?

What could go wrong at a cold-weather Super Bowl? Cold weather, says the Farmers' Almanac, which will strike New York just in time for the Big Game.

Tim Tebow

Tim Tebow

Will he make the cut in New England? If so, will he make an impact?

Manti Te'o

Manti Te'o

Can this former college superstar shake off the girlfriend hoax story and be an effective linebacker in San Diego?

Young QBs

Young QBs

With Griffin, Andrew Luck and Russell Wilson, 2012 was a banner year for rookie quarterbacks. Stratosphere or sophomore slump?

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