Headliner "a performer or act that is the star attraction on a program and typically performs last".

Never have I ever been to an event where an actual headliner has not played the final spot..

All you people who are saying headliners can play in other spots don't understand what "headliner" truly means and are perpetuating the problem in the scene.

Don't use the word "headliner" lightly; sometimes there are no headliners at an event, just bands who are playing or touring through.