Jason Heyward, arguably baseball's top prospect before the season, began his rookie of the year campaign on Opening Day with a 476-foot home run. Buster Posey spent two months in the minors but has terrorized opposing pitching since. Stephen Strasburg debuted in June as perhaps the most-hyped prospect in history (and actually lived up to it) but made only 12 starts before hitting the disabled list. Jaime Garcia leads rookies in wins, strikeouts and ERA after beginning the year as the Cardinals' No. 5 starter. Starlin Castro, all of 20 years old, overcame some early-season hiccups and is hitting better than .300 and playing solid defense at shortstop, a premium position.
In another season, any one of these players would be an easy favorite for the National League Rookie of the Year award. How can we fairly compare them all, each having outstanding rookie seasons in his own way? Fortunately, we developed a method called total runs in "The Fielding Bible -- Volume II."