Follow Prospects Worldwide on Twitter: @ProspectsWorldW **Right below is the Mariners Risers and Shiners list simplified. Scroll further down for FULL Future Grades, Roles, ETA, and
Tag: Seattle Mariners Top Prospects
Risers and Shiners: Seattle Mariners
Risers and Shiners: Seattle Mariners
Mariners 2020 Top 20 Prospects
Written By: Matt AultFollow him on Twitter: @MattAult6Follow Prospects Worldwide on Twitter: @ProspectsWorldW **Right below is the Mariners Top 20 list simplified. Scroll further down for FULL