Mariners Prospect Rankings Update: May

After the first month of the season, let's update the rankings.

This is the first of four in-season updates with my rankings. I don’t make changes without convincing evidence. Sometimes it takes 2-3 months for differences to mean any move up or down. Sometimes I’m sold on making the move sooner

Players’ overall future value (OFP, FV) dictates the rankings, so at times it doesn’t take much for the order to change.

* Players currently in the majors do not qualify, even if they maintain rookie status (Alex Hoppe, for example).

The pre-season Top 50 is here.