The art and science of cleats has come a long way. With my latest Sports Illustrated article, I take a lengthy look at how cleats have evolved into a product now not only sport-specific, but even position-specific within sports. Lineman and wide receivers use vastly different cleat types. Defenders and forwards have little in common on the bottom of their boots. It is simply the way the shoe manufacturing world has embraced science. Take a look at the story on SI by clicking here.