It may be a real thing, but it's value is artificially inflated. Guys who "can leadoff" are given greater market value, for no good reason. Roberts' value lies in his production numbers, not in his supposed ability to hit leadoff. There's nothing wrong with going after a player like Roberts, there is something wrong with going after a guy like Roberts because he can leadoff and thus paying a premium for that arbitrary qualification. I think people overstate the fact that a leadoff hitter only leads off once and forget the fact that he always bats before a teams heart of the order (unless the inning starts with the 3-4-5 hitters). What's lost on the whole lineup discussion is that your leadoff hitter and your 2-hitter are table-setters for your heart-of-the-order hitters. If lineup position was completely irrelevant, your best power hitters would not bat 3-4-5, they would be 1 or 2 or whereever (Soriano's ridiculous wishes excluded). Maybe, for semantics sake, we should call the leadoff hitter the: "sometimes-top-of-the-order, but-usually-table-setter-for-the-heart-of-the-order-guy". Maybe we'll need an acronym. STOTOBUTSFTHOTOG? Exactly, leadoff hitter is an arbitrary title, however, the fact remains that you want guys on base when your best hitters come to the plate. Therefore, since your best hitters generally hit 3-4-5, it make sense to put high OBP guys in front of them at the top of the order. That being said, guys like Brian Roberts should be valued for getting on base, along with his other attributes (speed, decent power, good defense), instead of for just being a leadoff hitter. However, it is those skills that make people call him "a legitimate leadoff hitter" that make him valuable.