... talent levels not varying too much, unheralded squads are breaking into the postseason each year.

It also means that continued success is hard to sustain. Getting back to the playoffs each year is a struggle, no matter how talented a team is.

For many of last season's playoff teams, their postseason appearances might have been the peak of their success. The team may have had a fluke season or lost key members since its run.

And with other hungry teams vying for a spot, repeating is a daunting task. Squads like the Pittsburgh Steelers and Atlanta Falcons have to be chomping at the bit to return to the playoffs.

With that said, here are five teams, with some honorable mentions, that will have trouble getting back to the postsea...

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