Minor League Baseball

Seattle Mariners Double-A Pitcher Jumps Into Team's Top 30 Prospect List

Marcelo Perez was included in MLB Pipeline's latest team prospects list after Cole Young's graduation.
Teren Kowatsch|
TCU pitcher Marcelo Perez throws against Kansas State in a Big 12 Tournament game on May 29, 2021, at Chickasaw Bricktown Ballpark.
TCU pitcher Marcelo Perez throws against Kansas State in a Big 12 Tournament game on May 29, 2021, at Chickasaw Bricktown Ballpark. | Rob Ferguson-Imagn Images

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Seattle Mariners

The Seattle Mariners have a new top 30 prospect after a top 100 minor leaguer's recent graduation.

Right-handed pitcher Marcelo Perez clocked in as the Mariners' No. 21 prospect according to the latest team rankings from MLB Pipeline. Perez replaced second baseman Cole Young, who has been Seattle's primary starting second baseman since his major league promotion May 31.

MLB Pipeline had the following scouting report on Perez:

An undersized right-hander at 5-foot-10, Perez is all about strikes and spin. His fastball has ticked up to averaging around 93 mph. It’s not a difference-maker, but his ability to hold and command his velocity in longer starts has helped him improve. He has two different sliders he throws more than the heater, and both are effective -- a shorter gyro-like breaker at around 87 mph and a low-80s sweeper.
Helping all of his stuff play up is his ability to fill up the strike zone with all of his offerings. His walk rates continue to be very low, even as he climbs the ladder.

The 25-year-old Perez was selected by the Mariners in the 11th round of the 2022 MLB Draft. He spent parts of three seasons from 2023-25 with the organization's High-A affiliate, the Everett AquaSox. He was promoted to the Double-A Arkansas Travelers on June 24.

Perez has taken a massive step from last year to now. In 2024, he posted a 6.81 ERA with 91 strikeouts in 104.1 innings pitched across 25 starts.

This season, Perez has a 2.45 ERA with 43 strikeouts in 58.2 innings across 12 starts. Since being promoted to Arkansas, he's posted a 3.09 ERA with nine strikeouts in 23.1 innings pitched across four starts.

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Teren Kowatsch
TEREN KOWATSCH

Teren Kowatsch is a staff writer for ''Minor League Baseball on SI'' and other "On SI'' baseball sites. He has been a writer for “On SI’’ for two years and is a graduate of the University of Idaho. You can follow him on Twitter @Teren_Kowatsch

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