RotoGraphs Consensus Ranks: Starting Pitchers
Starting pitchers are the best. For whatever reason — perhaps their true talent changes more year to year, or they have less control over their results than hitters, or injury is more pervasive — pitchers are harder to project than hitters. I personally believe it’s because the power of changing your pitching mix can make you a new pitcher.
Look at Dallas Keuchel. He used to have a meh curve, he ditched it for a good slider. How relevant are his past stats now? You move a pitcher from the tougher league to the easier one, and you have to guess at how much that will matter, to some extent. Because the defense behind them will change too. In Doug Fister’s case, it always seemed like he’d get better defense at his new stop. Is that the case? Or consider the case of Jose Fernandez and the lack of major league sample size. You regress him, and he’s still great. Or Masahiro Tanaka, the complete lack of major league stats.