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Miami Marlins catcher Joe Mack celebrates rounding second after hitting a grand slam in the fifth inning against the Philadelphia Phillies at Roger Dean Chevrolet Stadium in Jupiter, Florida on February 24, 2026.

Marlins #4 Prospect Joe Mack Gets Much Deserved Call-Up, Agustin Ramirez Sent Down

After a solid start to his 2026 season in the minor leagues, Joe Mack has received a call-up to the Marlins, according to Craig Mish of Marlins TV. The catcher, who is ranked #4 in the Marlins prospect rankings according to MLB.com, has impressed in AAA so far. While his power numbers are not where they have been in years past, Mack is showing a keen ability to get on base. In a subsequent move, Agustin Ramirez, who has struggled behind the plate and at the plate for the Marlins, has been sent down to AAA Jacksonville.

Marlins Call Up #4 Prospect Joe Mack

His 20 walks to 22 strikeouts ratio is incredibly impressive for a player of his age and experience. It is yet to be seen what Mack’s role will be on the team, whether it will be as a platoon catcher, a designated hitter, or both. In his previous seasons in the Marlins farm system, he has shown power in his bat and a strong arm behind the plate. His 43 extra-base hits in 113 games last season, coupled with a 30% caught stealing rate, will hopefully make him a strong contender to get his fair share of game-time in Miami.

Ramirez has been below average at the plate for Miami, after showing glimpses in 2025, where he finished sixth in National League Rookie of the Year voting. It has been a conversation for quite a few weeks amongst Marlins fans and aggregators as to how long Ramirez would last with his underperforming output.

Potential for More Prospects To Be Called Up

Mack’s call-up to the Majors shows trust in the 23-year-old, as Marlins manager Clayton McCullough may look to trust his prospect talent moving forward. This could be good news for top prospects like Robbie Snelling, Thomas White, and Kemp Alderman, three of the Marlins’ top-eight prospects. Mack will join the team on Monday as they close out a four-game series with the Philadelphia Phillies.

 

Main Photo Credit: Jim Rassol-Imagn Images

About Christian Maldonado

Christian Maldonado is a beat writer at LWOS, where they cover baseball news and analysis. They have been with LWOS since 2026, focusing on covering the Miami Marlins. Prior to joining LWOS, they wrote for Reel Wrap Entertainment, and currently hosts his own podcast, "It's Time We Talk." They bring experience in sports reporting and opinion journalism. Christian holds a bachelors degree in journalism and communication from Central Connecticut State University, where they developed a strong foundation in reporting and editing.