Punt returner

A return specialist or kick returner is a player on the special teams unit of an American football or Canadian football team who specializes in returning punts and/or kickoffs. There are few players who are exclusively return specialists; most also play another position such as wide receiver or running back. The special teams counterpart of a return specialist is a kicking specialist.

According to All-American Venric Mark, "Returning punts is harder. You have to judge the ball more, you have to know when to fair catch and when not to. You can't be a superhero and try to catch everything. With kickoff returns, you catch the ball and — boom — you're going."

A kickoff returner (KR) is the player on special teams who is primarily responsible for catching the opposing team's kickoff and attempting to run it towards the end zone to score a touchdown. If the ball is kicked into his own end zone, the kick returner must assess the situation on the field while the ball is in the air and determine if it would be beneficial to his team for a return. If he decides that it is not, he can make a touchback by kneeling down in the end zone after catching the ball, ending the play and starting the next play at the 25-yard line to start the drive.

The kickoff returner position is often played by a small, faster player such as a cornerback, running back or wide receiver. Backup players frequently assume this role so starting players on the offense take less hits as the kickoff returner position, and can play their regular positions. In the days of one platoon football, the returner position was synonymous with the "safety man" - a quarterback or halfback.

...
Wikipedia