Scouting Explained: Introduction, Hitting Pt 1 Pt 2 Pt 3 Pt 4 Pt 5 Pt 6

When I started here just last month, I promised I would write a comprehensive series of articles explaining every part of the 20-80 scouting scale. This is the beginning of that series.

Background

The invention of the scale is credited to Branch Rickey and whether he intended it or not, it mirrors various scientific scales. 50 is major league average, then each 10 point increment represents a standard deviation better or worse than average. In a normal distribution, three standard deviations in either direction should include 99.7% of your sample, so that’s why the scale is 20 to 80 rather than 0 and 100. That said, the distribution of tools isn’t a normal curve for every tool, but is somewhere close to that for most.

The Basics

You’ve probably heard people call athletic hitters a “five-tool prospect.” While that is an overused and misunderstood term, they are referring to the 20-80 scouting scale. The five tools for position players are 1) Hitting 2) Power 3) Running 4) Fielding and 5) Throwing. The general use of the “five-tool” term is when all five are at least average (which is more rare than you’d think) and I generally only use it when all five are above average. It’s a shockingly small list of players over the history of baseball that have five plus tools, but if you ask around, scouts will tell you Bo Knows.

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