Marlins Add Joe Mack, Will Kempner, Josh White to 40-Man Roster - Rule 5 Draft Protection Explained (2025)

Get ready for some exciting news from the world of baseball! The Marlins are making some strategic moves to secure their future behind the plate and on the mound.

In a bold move, the Marlins have selected three promising players to protect them from the Rule 5 draft. Let's dive into the details and uncover why these selections are creating quite a buzz.

First up is catcher Joe Mack, a high school first-round pick from 2021. This left-handed batter has been making waves in the minors, with an impressive 21 home runs and a solid slash line of .257/.338/.475 in just 468 plate appearances. Mack's defensive skills are also top-notch, positioning him as a strong contender for Miami's long-term catching role. With his talent and potential, it's no surprise that the Marlins wanted to keep him off the Rule 5 draft radar.

But here's where it gets controversial... Mack's selection might have pushed out outfielder Joey Wiemer, a former top prospect. Wiemer, acquired from Kansas City in August, had a decent run with the Marlins, but his strikeout-prone nature might have sealed his fate. With a career batting average of .205 and a high strikeout rate, Miami might opt to non-tender him and offer a minor league contract instead.

Next, we have right-hander Will Kempner, acquired from the Giants last offseason. Kempner, a 2022 third-round pick, has been a pure reliever sensation, boasting a 2.26 ERA across 67 2/3 innings in his first season with Miami. His strikeout rate is impressive, but he'll need to work on his control to become a reliable up-and-down reliever next season.

And this is the part most people miss... Kempner's selection might have been influenced by his international bonus pool room acquisition. The Marlins are clearly investing in their future, and Kempner could be a key piece of that puzzle.

Finally, we meet Josh White, another right-hander with a monster strikeout rate of 40.8% across 67 2/3 frames in the minors. White, a former fifth-round pick, sits comfortably in the 93-94 MPH range and relies on his plus mid-80s slider to dominate batters. He's definitely one to watch for next season.

So, what do you think? Are the Marlins making the right moves to build a strong team? Or are there other factors at play? Feel free to share your thoughts and opinions in the comments below! We'd love to hear your take on these roster decisions and the potential impact they'll have on the Marlins' future.

Marlins Add Joe Mack, Will Kempner, Josh White to 40-Man Roster - Rule 5 Draft Protection Explained (2025)
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