NFL's Quadruple Threats

Several of today's NFL players have scored two and three different ways, but only a few active players have reached the quadruple level. Here's the fraternity, beginning with Sproles, who has scored on a punt return, two rushes, and two kickoff returns since 2005. He picked up his fourth type of score earlier this season with a 66-yard catch against the Broncos during Week 2.