Knock on wood, I certainly hope so. This piece isn’t about sending a tribute to the area, rather it is a discussion of the composition of the minor leagues and those who reach the major leagues.
While this article became a study of a the California League’s population, the concept began when I was thinking about Jake Lamb‘s prospect status. Lamb signed with the Diamondbacks last June and I stumbled upon him during his first Spring Training with the club — he ranked among the 10 best prospects I saw in Arizona. Intrigued, I followed his injury-riddled season closely and thought he would never garner the attention I believed he deserved because of his old age and collegiate pedigree (though, Hulet ranked him higher than anyone else this off season!). Suddenly, I found myself buried in Excel attempting to discover what Jake Lamb’s chances were to become a major leaguer.
Statistical studies of prospects are difficult because the minor leagues are vast and rife with variables and failure. There are 189 teams across 16 full-season, short season and rookie leagues, each stocked with talent that may never make a major league 25-man roster. With over 5,000 minor leaguers vying for 750 MLB roster spots it can be easier to study the successes.
Studying only the players who reach the major leagues may be easier, but often such studies snag on “survivorship bias.” Survivorship bias may be present when a study’s population consists of a select group amongst a larger class. If one is going to study success, it’s wise to study failure too. For a demonstration of survivorship bias, read Dave Cameron’s post on The Value of Hunter Pence.