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Holly Cross pitcher Danny Macchiarola (right) celebrates with a teammate after a win against Army on May 18 at Fitton Field. Alan Arsenault/Special to the Telegram & Gazette / USA TODAY NETWORK via Imagn Images

Here's Who the Seattle Mariners Selected in Round 4-10 of 2025 MLB Draft

Originally posted on Minor League Baseball on SI
By Teren Kowatsch | Last updated Jul 14, 2025 4:45 PM ET

SEATTLE — The Seattle Mariners were arguably the undisputed winners of Day 1 of the 2025 MLB Draft on Sunday. The Mariners were able to stay within their slot budget, took arguably the best player in the draft (left-handed pitcher Kade Anderson), drafted power-hitting catcher Luke Stevenson, selected promising prep shortstop Nate Becker and closed out the draft with right-handed pitcher Griffin Hugus.

Seattle followed its successful first three rounds by going pitcher-heavy on Day 2 of the draft.

Here's an overview of the Mariners' Rounds 4-10 draft picks:

No. 122: Mason Peters, LHP, Dallas Baptist

Peters posted a 4.25 ERA with 58 strikeouts in 42.1 innings pitched across 20 appearances (four starts) and four saves in his lone season with Dallas Baptist this season.

No. 152: Korbyn Dickerson, OF, Indiana

In his lone season with the Hoosiers, Dickerson scored 57 runs in 56 games and hit 14 doubles, three triples and 19 home runs with 77 RBIs. He slashed .314/.381/.632 with a 1.013 OPS.

Korbyn Dickerson is easily the best name still available after Day 1 (No. 43 on my board). Hit 19 homers this year with a 110 90th%EV and 117 max for Indiana, spraying power to all field while he's a plus runner that plays 55 defense in center. pic.twitter.com/aHpR4MNDst
— Quinn Riley (@QuinnRileyBB) July 14, 2025

No. 182: Lucas Kelly, RHP, Arizona State

Kelly had a 4.05 ERA with 34 strikeouts in 26.2 innings pitched in 21 appearances.

Arizona State RHP Lucas Kelly is one of the most interesting reliever prospects in the 2025 Draft. Super-low slot, ability to hold carry on FB, creates flat, hoppy angle. Up to 99. Could be a 70 FB. Frisbee bullet SL w/ big depth. Big upside.

26 K, 5 BB, 21.2 IP, 2.08 ERA pic.twitter.com/GHhEzBBB1Y
— Joe Doyle (@JoeDoyleMiLB) May 9, 2025

No. 212: Colton Shaw, RHP, Yale

Shaw, who was a four-year starter at Yale, posted a 3.13 ERA this season and fanned 80 batters in 77.2 innings pitched across 12 starts.

No. 242: Danny Macchiarola, RHP, Holy Cross

Macchiarola had a 3.27 ERA and struck out 92 hitters in 93.2 innings across 16 starts.

No. 272: Jackson Steensma, RHP, Appalachian State

Steensma was out all of 2025 due to surgery for an elbow injury. Dr. Keith Meister, who Seattle consults often for its pitcher-related injuries. He had a 4.03 ERA and fanned 74 batters in 67 innings across 14 starts in 2024.

Two scoreless innings for Jackson Steensma to begin the ballgame!#TIGMA pic.twitter.com/3cQxDgC8uW
— App State Baseball (@AppBaseball) April 6, 2024

No. 302: Isaac Lyon, RHP, Grand Canyon

Lyon struck out 88 batters in 86 innings across 15 starts this season and posted a 4.19 ERA.

Related Minor League Baseball stories

MARINERS DRAFT HIGH SCHOOL SHORTSTOP, COLLEGE PITCHER WITH FINAL TWO DAY 1 PICKS: The Mariners drafted shortstop Nick Becker out of Don Bosco Prep in New Jersey and right-handed pitcher Griffin Hugus out of Miami with their second and third-round picks Sunday. CLICK HERE

MARINERS' EXEC SCOTT HUNTER DISCUSSES DRAFTING KADE ANDERSON: The Mariners took the Most Outstanding Player from this year's NCAA College World Series with the No. 3 pick in the draft Sunday. CLICK HERE

MARINERS HAVE NO. 3 PICK IN 2025 MLB DRAFT; HERE'S HOW TO WATCH: Fans will be able to watch the first three rounds of the MLB Draft on Sunday, and the Mariners will have four picks. CLICK HERE

This article first appeared on Minor League Baseball on SI and was syndicated with permission.

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