Colt Emerson Photograph: Allan Henry-Imagn Photographs
Under is an evaluation of the prospects within the farm system of the Seattle Mariners. Scouting studies have been compiled with info offered by business sources in addition to my very own observations. That is the fifth yr we’re delineating between two anticipated reduction roles, the abbreviations for which you’ll see within the “place” column under: MIRP for multi-inning reduction pitchers, and SIRP for single-inning reduction pitchers. The ETAs listed typically correspond to the yr a participant needs to be added to the 40-man roster to keep away from being made eligible for the Rule 5 draft. Guide changes are made the place they appear applicable, however we use that as a rule of thumb.
A fast overview of what FV (Future Worth) means may be discovered right here. A a lot deeper overview may be discovered right here.
The entire ranked prospects under additionally seem on The Board, a useful resource the location gives that includes sortable scouting info for each group. It has extra particulars (and up to date TrackMan information from numerous sources) than this text and integrates each group’s record so readers can examine prospects throughout farm methods. It may be discovered right here.
Different Prospects of Word
Grouped by sort and listed so as of desire inside every class.
Working Again From Harm
Cole PhillipsRHP
Taylor DollardRHP
After sitting about 91 mph in the summertime after his junior yr, Phillips was sitting 94-98 with relative ease throughout his draft spring till he had Tommy John in early April. The Braves nonetheless noticed match to provide him about $1.5 million within the second spherical. The Mariners used their beginner studies to tell their determination after they traded for Phillips as a part of the Jarred Kelenic/Evan White contract swap. Phillips wanted a second Tommy John earlier than the 2024 season, after which had a stress response in his elbow that has shelved him for all of 2025 up to now. He has but to throw a single professional pitch in an precise sport, and is on tempo to return in August. It’s powerful to provide him a foremost record FV at this level, however he’s a high-priority goal for scouting throughout Bridge League/instructs. Dollard is coming off rehab for surgical procedure to restore a torn labrum and is barely sitting within the upper-80s by means of a few half-dozen appearances since his return. At peak, he appeared like a pitchability backend starter.
Fringe Hitters
Jared SundstromOF
Invoice KnightCF
Rhylan ThomasOF
Milkar Perez1b
Austin St. LaurentINF
Victor LabradaOF
Sundstrom is an athletic 23-year-old energy/pace outfield prospect from UC Santa Barbara. He’s taking part in principally proper subject, and is one other hitter on this org whose swing leaves him vulnerably tardy on the outer third. Knight is a 40-hit/30-power man who can actually play middle subject. The 25-year-old is at Arkansas and has a 102 wRC+ after posting a 94 at Everett final yr. Thomas is a slender, tough-to-Ok nook outfielder out of USC who’s a profession .300 hitter within the minors. He had his first large league cup of espresso in 2025 and is a positive upper-level depth choice. Perez is a 23-year-old Nicaraguan first baseman who may have run for Mayor of Modesto after his third full-season project there final yr. He has lastly reached Everett and is making a plus price of contact from the left aspect. He’s a smaller man with out typical first base pop. St. Laurent was a 2024 Day Three decide who’s off to begin with the bat at Modesto. He has a brief, downward-cutting swing that produces a ton of oppo contact. Labrada is high-motored, plus-plus operating left fielder who appears to have made some changes at Double-A and is hanging out a lot much less up to now in 2025. He has fifth outfielder ceiling.
Ex-Two-Means Guys and Conversion Arms
Sauryn LaoRHP
The backyard kindsRHP
Grant KnippRHP
Lao, 25, was a 3rd baseman within the Dodgers system and transformed in 2022. Danner, 26, was a two-way prospect in highschool who started his professional profession as a catcher earlier than he moved again to the mound and has been toiling away at Triple-A since 2023. Each are mid-90s guys with sliders. Lao’s is nice, however his fastball performs down, whereas Danner’s stuff has been common for a short while now. Knipp was a two-way participant at Campbell who touched 100 on the 2024 Mix. He had TJ simply earlier than the 2025 season. Realistically, he’s an eventual reliever.
Good Breaking Stuff
Blas CastañoRHP
Michael HobbsRHP
Juan BurgosRHP
Peyton AlfordLHP
Castaño was initially a Yankee however was launched towards the tip of the 2023 season and hopped on with the Mariners. He’s a cool low-ish slot righty with a kitchen sink (emphasis on sink) repertoire that leans on his sinker, cutter, and sweeper. He debuted this yr and is an emergency depth choice. Hobbs is a 25-year-old Double-A reliever who was drafted by the Dodgers, then was a Mets minor league Rule 5 decide in 2024, after which was traded to Seattle in March of 2025. He tries to sneak breaking balls into the highest of the zone after which elevate a low-90s fastball above it for chase. In 2025, it’s working; he’s main the Arkansas roster in swinging strike price. He’s a bit too wild for a man who sits 91 to incorporate on the primary part, however he’s undoubtedly within the combine for emergency depth innings. Burgos is a 25-year-old Dominican reliever who’ll contact 98, albeit with ineffective motion. He pitches off his laborious slider/cutter, which is above common however performs down as a bat-misser as a result of he depends on it to take action many different issues. Alford is a enjoyable little (he’s 5-foot-8) undrafted lefty out of Virginia Tech whose 91-93 mph fastball has plus-plus vertical motion. Alford is a superb athlete for his dimension and may snap off a pleasant curveball, however he’s 27 and his efficiency has regressed despite the fact that he’s repeating Double-A.
Funkadelic Relievers
Tyler ClevelandRHP
Jimmy JoyceRHP
Taylor FloydRHP
Cleveland is a 25-year-old submarine reduction righty at Excessive-A. His stride course seems like Andy Petitte’s pickoff transfer, which has been altered because the Mariners drafted him out of Central Arkansas. He seems like a Jimmy Herget sort specialist. As a result of I assume Joyce goes by “Jimmy” in order that he isn’t bombarded with jokes about stream of consciousness prose, I’ll spare everybody mine. Joyce has a cool and misleading low-release that he involves by way of a giant, open stride down the mound. His secondary pitches get large lateral motion in both course, along with his changeup rising as his weapon of alternative earlier this yr earlier than he hit the IL in late April. Floyd was as soon as a 40 FV sidearm reduction prospect with unusual arm energy for somebody along with his mechanics. His supply modified seemingly by chance getting into 2023, his stuff and command backed up, and he started bouncing round, from Milwaukee to Minnesota and now Seattle. He’s having a greater 2025 as his slider performs like a plus pitch at Arkansas.
Uphill Heaters
Anyelo ovandoRHP
Pedro da Costa LemosRHP
Evan TruittRHP
A 6-foot-5, XXL righty who generates over seven toes of extension down the mound, Ovando is a 24-year-old A-ball reliever who has 40-grade stuff, however a giant league body and supply. A 22-year-old Brazilian righty, Da Costa Lemos’ upshot, low-90s fastball is producing plus miss at Modesto. Truitt, 22, is an athletic, 6-foot righty who instructions an uphill fastball and cutter. He’s throwing strikes in Everett however has been homer-prone.
Lengthy-Time period Dev Tasks
Quiet JosephSS
Aiden butlerRHP
Dylan WilsonRHP
Joseph signed for $3.3 million in 2024 and had a extremely terrible first professional season within the DSL, the place he hit .133. He’s off to a Ok-prone begin in 2025. Butler is a 6-foot-6 righty out of Polk State School in Florida who has already pitched his approach off the complicated and to Modesto. He’s sitting within the low-90s and his breaking balls have plus spin, however his command is fairly uncooked. A 6-foot 19-year-old righty from Curaçao, Wilson has a low-90s fastball, two respectable breaking balls (a low-80s lateral slider and a slower, vertical curveball), and the makings of a viable splitter. He’s an above-average athlete with below-average bodily projection.
System Overview
That is in all probability the one system in baseball that’s good despite the fact that it’s shallow. It’s uncommon for me to jot down up fewer than 30 guys in an org (with the extras I wrote up slightly over 50, however you get what I imply), and often after I do, it’s a stinker. However not solely is the Mariners farm system good, it’s arguably among the finest handful in baseball as a result of it has so many potential impression bats up high. Groups are determined for younger, everyday-quality place gamers, and Seattle has a number of kids with that form of ceiling. Whereas I clearly have qualms about a few of these guys, there are such a lot of of them that it’s possible that at the least a number of will pan out, and that the group’s lineup three-ish years from now will likely be deeper and extra steady than the shallow group they’re operating on the market proper now. If that’s too lengthy for Mariners followers/possession to attend for true replenishment, then a participant or two from this group may be traded. Potential on a regular basis hitters transfer the needle in commerce discussions in contrast to another prospect demographic, and the Mariners may be snug dealing from their depth at catcher, or the center infield, or in middle in an effort to make one thing occur sooner. Their redundancy at these spots may make it much less painful to half with one or two of the youngsters at Everett if it means touchdown hitter with a number of years of management remaining on his deal. They did this final yr with Aidan Smith within the Randy Arozarena commerce.
The Mariners are on this place due to their latest draft methods, which have resulted in them including at the least one over-slot excessive schooler early within the choice course of after which pivoting to senior indicators (or different older, low-bonus gamers) earlier than any of the opposite groups, placing them in place to take one of the best accessible seniors. Ben Williamson was a kind of low-bonus guys whose lack of negotiating leverage helped the M’s bonus pool math work out in 2023, and he’s been ok to succeed in the bigs. With the Mariners selecting third general this yr, they might not be able to deploy any form of enjoyable or novel technique; they could simply take an clearly good participant at decide three, pay him slot, after which stick to fit bonuses for the remainder of the draft.
Internationally, issues have been blended. The Mariners aren’t afraid to provide an enormous bonus to at least one man in that market, and maybe that is a part of why the org lacks general depth. The org guess large on Dawel Joseph, and never solely has he struggled to search out traction within the DSL, however his signing got here with monumental alternative price. It’s powerful to have a deep worldwide class when one man will get $3 million or extra, and when that one participant doesn’t work out, it typically means you punted on a complete yr of potential expertise cultivation.
