As always, for a breakdown of our process in selecting the Top 30 Mariners prospects, read the primer by clicking here. If you want a breakdown of our first 28 prospects, you can go to the “minors” tab on the website, or click right here.
In addition, remember that our grades are based on the standard scouting scale. The scale ranges from 20-80, 20 being not MLB quality and 80 being a Hall of Fame tool. We also provide a probability score on a 1-5 scale, based on the likelihood they reach the 75% plateau of their upside.