Over the many years of player comparison and analysis, our understanding of what it means to be a great baseball player has continually evolved.

Along with that, we have also formed a better comprehension of the concept of a “bad” player.

There was a time when we would assess shortstops, catchers, and center fielders based merely on their offensive contributions, a practice we now understand to be shockingly limited. If ballplayers are to be judged, they must be judged for all of their contributions, both their hitting and their defense.

With this in mind, we take a look at the 20 worst players of the 2010 baseball season, guys who just kill their team in all facets of the game.

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