Minors To Majors: Hitter Grades & Minor League Results
I’ve made it almost a month since I made the following declaration on investigating prospect Hit grades:
I am going to stay away from more Hit tool predictions until I have collected every one of MLB.com’s prospect grades from 2013 and 2014, not just the top 100. I probably will not be able to compare many to their major league stats but I can with Triple-A.
I broke my position after collecting MLB.com’s 2013 grades. I ventured forward without the 2014 grades. With this larger and more diverse dataset, I compared the hitters’ grades to their batting average, home runs, and stolen bases in both AA and AAA.
Trying to better understand the Hit tool stems from finding it doesn’t contain any predictive power. When looking at players with different grades, major leaguers ended up posting similar batting averages. I concluded two issues were causing the production to level out.
First, hitters needed a talent and/or production baseline to get into the majors. Some hitters with below average grades were under-graded and produced up to the MLB baseline. Additionally, “better” hitters were over-graded but still had just enough talent to make the majors. This talent convergence tends to average out the grades.