The Seattle Mariners’ have developed one of baseball’s best farm system over the years, but there is a chance that it could take a minor hit or two next month.

Seattle Mariners non-tender 3 players for 2026 season

There are a handful of less-heralded but still notable M’s prospects who are eligible for MLB’s upcoming Rule 5 Draft, which takes place Dec. 10 during the Winter Meetings in Orlando, Fla.

A total of six prospects ranked in the Mariners’ top 30 by MLB Pipeline are eligible to be selected by other teams.

Here’s a look at the notable Mariners prospects who are eligible for selection as well as what to know about the Rule 5 draft.

Eligible M’s prospects

Here are the top-30 Mariners prospects who are eligible for the Rule 5 Draft, plus one former top prospect.

Prospect ranki

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