The term “breakout” has different meanings for different people in the world of fantasy football. Some folks believe it’s simply a player who will outperform his draft position. Others think it’s an established player who emerges into a regular fantasy starter after never having reached that sort of status in the past.
In my opinion, both definitions are true but with a caveat. I don’t see a player as a breakout candidate if he’s already reached his “statistical ceiling” during his career. For example, Justin Herbert or Najee Harris aren’t “breakouts” to me. Is Herbert coming off a down year? Yes. But that doesn’t make him a breakout candidate. The same goes for Harris, who has been considered a top-10 pick in the past.
In my opinion, you can’t break out twice.