From the very first play this season, NFL football has looked a lot different. The league has dramatically changed its kickoff rules in an effort to reduce injuries.A kickoff starts each half and takes place after a touchdown or field goal. Under the old rules, the kicking team starts at their 35-yard line and tries to kick the ball as far downfield as possible to get their defense a better chance of stopping the offense far from the end zone, while the receiving team tries to move the ball as far as they can up the field. With two teams running at each other at top speed, collisions between players can be devastating.The new version includes players lining up closer to each other and waiting to move until the ball hits the ground or is touched by a returner inside the 20-yard line.Time will tell whether it will remain one …