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By: Jared Barton

After a blazing-hot month of May in AAA Tacoma, former Tiger and Mariners number three-rated prospect Cole Young made his Major League debut Saturday.

Welcome to the show, Cole Young (2024 Peoria Javelinas).

Young, the Mariners’ No. 3 prospect and No. 43 on Pipeline’s Top 100 list, made his debut today playing second base and hitting eighth. The infielder had three at bats for Peoria in an injury-shortened 2024 Fall League. In… pic.twitter.com/lSwRb3GJgQ

— MLB’s Arizona Fall League (@MLBazFallLeague) June 1, 2025

The 21st overall selection in the 2022 MLB Draft was batting .277 in AAA with 26 RBI, 39 runs, 57 hits, five home runs and four stolen bases. Mariners manager Dan Wilson spoke highly about Young before his debut.

Dan Wilson on what he learned from Cole Young in spring training, and the type of player he is

“It’s great to have him as part of this lineup” pic.twitter.com/itzB58h7bw

— Marine Layer Podcast (@MarineLayerPod) May 31, 2025

Young started at second base for Seattle, which hosted the Minnesota Twins at T-Mobile Park. The former first-round pick’s family was in attendance for the moment.

Cool moment for North Allegheny grad Cole Young, who gets a big ovation from the Seattle crowd as he steps to the plate for his first MLB at-bat. Swung at the first pitch he saw and flew out to right. Big things expected out of the 21-year old. #WPIALpic.twitter.com/iRDcx6pHiu

— Brad Everett (@BREAL412) June 1, 2025

Young is the second-fastest WPIAL player drafted in the first round out of high school to make the majors, according to the Pittsburgh Post-Gazette’s Mike White.

Congrats to North Allegheny’s Cole Young. Reports have him called up to MLB with Seattle Mariners.

Cole is only 21 and made majors in 2nd fastest time of any WPIAL player drafted in 1st round out of high school. Gateway’s Tim Conroy went right to majors after drafted in 1978. pic.twitter.com/5HhkYQ1soO

— Mike White (@mwhiteburgh) May 31, 2025

Young was able to reach base on a walk in the bottom of the seventh inning. He was also able to record multiple outs in the field and was on the receiving end of an integral double play in the eighth inning.

Randy Arozarena turns a CLUTCH double play and nabs the runner in scoring position pic.twitter.com/stozQNP83t

— MLB (@MLB) June 1, 2025

His first Major League hit came in the bottom of the ninth inning, which started a rally for the Mariners.

The first of many for Cole Young! #TridentsUp pic.twitter.com/AfKTA0lCWT

— Seattle Mariners (@Mariners) June 1, 2025

Young came up clutch in the bottom of the 11th inning, grounding into a fielder’s choice that scored Miles Mastrobuoni to win the game for Seattle.

Cole Young walks it off in his MLB debut! #TridentsUp pic.twitter.com/o1iUkyGt3g

— Seattle Mariners (@Mariners) June 1, 2025

Young is the first player in Mariners history with a walk-off plate appearance in his MLB debut.