What exactly is a knucklehead?
Don't search Merriam-Webster's, because you won't find it there.
Urban Dictionary defines a "knucklehead" as a "person of questionable intelligence" or a "stubborn dunce."
With that vivid description in mind, I took a look at the biggest knuckleheads in the history of the Chicago White Sox, from the front office to the field.
Arrogance, stupidity and questionable quotes define this list, here are the "winners".