Floyd Mayweather Jr., is considered a runner. His fans claim this is the art of boxing (hit and not be hit) Although this is partially true, it's not just about not getting hit. You also have to try and knock out your opponent. When you claim to be the best at what you do, you don't run all night and be content with a decision. That shows no heart.
Floyd Mayweather Jr. is a runner, he ran from Carlos Manuel Baldomir all night long and Floyd won by decision.