Every year, a few players have a profound impact on the NFL playoff picture. Last year, Tim Tebow resurrected a 1-4 Denver Broncos team and went on an inexplicable and historic run to the AFC West crown. Calvin Johnson's sheer dominance of opposing secondaries was one of the main reasons the Detroit Lions snapped an embarrassing postseason drought. Which difference-makers will have the biggest impact on this year's postseason picture? Sure, Tom Brady, Arian Foster and Aaron Rodgers will have a huge impact, but let's step outside the box a little.