The Seattle Marinersfarm system is one of the best in the game, with a majority of their top prospects stashed at Double-A or above. Although the on-field product at the major league level has been generally uninspiring, the organization has done an admirable job drafting both high-ceiling and high-floor talent over the last three years.

Headed into the 2013 season, the Mariners have an impressive collection of top 100 prospects in RHP Taijuan Walker, C Mike Zunino, LHP Danny Hultzen, SS-2B Nick Franklin and LHP James Paxton. Beyond those players, their system is exceptionally deep and loaded with potential impact talent—including several under-the-radar prospects.

In selecting players for this article, I targeted prospects who are behind the developmental curve relative to their age, have a concerning medical history, lack significant professional experience or are simply underappreciated

Here’s a look at the most underrated prospects in the Seattle Mariners’ farm system.

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