
The Seattle Mariners are considered to have one of the best farm systems in baseball.
The Mariners had as many as nine top 100 prospects according to both Baseball America and MLB Pipeline in 2025.
In MLB Pipeline's end-of-season top 100 rankings, Seattle had seven minor leaguers on the list.
The Mariners' farm system is a well-balanced mix of international prospects, players acquired via under-the-radar trades and the MLB Draft.
According to many MLB executives, the draft is where Seattle truly excels.
In an article published by Jonathan Mayo for MLB.com, executives were polled for several questions mainly centered around the topic of farm systems.
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The Mariners ranked near the top of the baseball in several questions according to the poll. They were tied for second with 18.2% percent of executives saying they were the best at developing pitchers. The M's were tied with the New York Mets and behind the Los Angeles Dodgers (20.5%) in the poll.
Seattle was also tied for fifth with 4.5% of executives saying the organization was the best at developing hitters. Overall, executives came together to award the M's the second-best farm system in baseball with 17.8% of votes behind the Dodgers (20%).
Where the Mariners stood apart among the executives was the draft.
According to the poll, Seattle is the best at utilizing the MLB Draft. The M's took the top spot with 20% of executives saying the PNW team was the best at it. The Chicago Cubs were second with 17.8%.
It's not shocking to see the executives recognize the Mariners for their use of the amateur draft.
Five of Seattle's seven top 100 prospects (per MLB Pipeline) were drafted by the organization. This includes the organization's top prospect and the No. 9 prospect in baseball according to the website, Colt Emerson.
Emerson is projected to make his major league debut this season and could break camp as the team's starting third baseman.
Emerson was the crown jewel of a '23 draft that saw the M's select three players with the first 30 picks, including outfielder Tai Peete and fellow top 100 prospect, outfielder Jonny Farmelo (No. 75 MLB Pipeline).
In the last two drafts alone, the Mariners have drafted three top 100 prospects. The M's took switch-pitcher Jurrangelo Cijntje (No. 90 MLB Pipeline) with the first-round in the 2024 MLB Draft; selected right-handed pitcher Ryan Sloan (No. 44) in the second round of the '24 draft and picked left-handed hurler Kade Anderson (No. 23) with the third overall selection in the 2025 MLB Draft.
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