The baseball life of a knuckleball pitcher is truly unique. Survival is predicated upon the success of a single pitch type, one that is rooted in randomness and whose effectiveness is sensitive to everything from mechanics to grips and even weather conditions. A knuckler's approach is based on the notion that batters know what pitch is coming, but not where it's going. The knuckleball was a recurring theme in my inaugural chat with BP, with many suggesting that washed up minor leaguers should adopt the pitch to re-forge a career in the bigs, though it is easy to underestimate the difficulty of harnessing a knuckler to the degree necessary to succeed at the highest level. Mercurial performance patterns have become par for the course of knuckleball pitchers, but R.A. Dickey's recent run of dominance is changing the way that we perceive this rare and exotic breed.