It could be argued that no position has changed more in the NFL's history than the tight end. Once primarily a sixth offensive lineman who would catch the occasional pass, tight ends have become key cogs on offense.
After 14 years in Philadelphia, Andy Reid takes over the reigns in Kansas City. Can he and new Chiefs quarterback Alex Smith turn around a team that went 2-14 last season? Here's our look at the Chiefs' 2013 NFL schedule.