Despite all the advancements in baseball statistics, the traditional numbers -- ERA and batting average, in particular -- still hold a lot of weight. That's especially true in fantasy baseball as most leagues use ERA and batting average as scoring categories.

As we know, those stats don't paint an accurate picture of how a player is performing.

One of the beautiful things about advanced metrics is they allow us to see through the box-score muck and find out what's really going on. This can be incredibly useful for fantasy purposes as those metrics can clue us in on who is playing better than their traditional numbers suggest or -- on the other hand -- whose success is a smoke-and-mirrors act.

Let's take a look at five players who, for varying reasons, are being undervalued in season-long leagues. Unless you're in a league with some whiz kids, there's a good chance you can get these players for less than they're actually worth. In some cases, all it'll cost you is a waiver claim.