Mariners Top 10 Prospects For 2026

Today, we're unveiling the 10 best prospects in the Mariners system entering 2026.

The top of the Mariners system is headlined by Colt Emerson, an infielder advanced for his age who should bring a well-rounded offensive profile to the majors in the not-too-distant future.

Baseball America's Jesús Cano is hosting a chat at 1 p.m. ET to discuss Emerson and the overall state of Seattle's farm system.

Projected 2029 Mariners Lineup

Catcher: Cal Raleigh (32)
First Base: Josh Naylor (32)
Second Base: Michael Arroyo (25)
Third Base: Colt Emerson (24)
Shortstop: Cole Young (25)
Left Field: Randy Arozarena (34)
Center Field: Julio Rodríguez (28)
Right Field: Jonny Farmelo (25)
Designated Hitter: Lazaro Montes (25)

No. 1 Starter: Bryan Woo (29)
No. 2 Starter: Logan Gilbert (32)
No. 3 Starter: George Kirby (31)
No. 4 Starter: Kade Anderson (25)
No. 5 Starter: Ryan Sloan (23)
Closer: Andrés Muñoz (30)

Listed below are the prospects with the best tools within the organization. To go directly to Seattle's Top 10, click here.

Mariners Best Tools

Best Hitter: Colt Emerson
Best Power Hitter: Lazaro Montes
Best Strike-Zone Discipline: Michael Arroyo
Fastest Baserunner: Tai Peete
Best Athlete: Jonny Farmelo
Best Fastball: Jurrangelo Cijntje
Best Curveball: Mason Peters
Best Slider: Teddy McGraw
Best Changeup: Ryan Sloan
Best Control: Kade Anderson
Best Defensive Catcher: Luke Stevenson
Best Defensive Infielder: Colt Emerson
Best Infield Arm: Colt Emerson
Best Defensive Outfielder: Jonny Farmelo
Best Outfield Arm: Lazaro Montes

Recapping The Draft Lottery

Another draft lottery is in the books, with the White Sox winning big on Tuesday by landing the No. 1 pick in the 2026 MLB Draft. Baseball America has it covered from all angles, including…

2026 Mock Draft: Our first mock of the 2026 cycle goes 40 picks deep now that the draft order is set. Read more…

Winners & Losers: Here are the teams that lucked out on Tuesday night, and the ones who walked away scorned. Read more…

Inside The Lottery: J.J. Cooper was once again in the room as the ping pong balls were selected. He explains how the Mets came oh so close to a much better draft position. Read more…

2027 Ineligibles: Carlos Collazo explains why a trio of 2026 MLB Draft lottery teams won’t be making a repeat selection in 2027. Read more…

Rule 5 Preview: Our work at the winter meetings isn’t done quite yet. Today is the Rule 5 draft. Here are 75+ players who could get selected. Read more…

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