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Top 20 Miami Marlins Prospects for Dynasty Leagues

Fantasy BaseballDynasty Fantasy BaseballMLB Prospects
Trevor Hooth
Author: Trevor Hooth
12 min.read
2025 Miami Marlins Top Prospects

The Miami Marlins went full fire sale at the trade deadline, meaning they are in rebuilding mode heading into the upcoming season. Since the trade deadline, they’ve added potential starters such as Matt Mervis, Jonah Bride, Connor Norby, among others. Especially in a tough division that just added the likes of Juan Soto, the expectations for Miami aren’t high, especially after coming off a 100-loss season. In this article, we’ll see which Marlins prospects could also be helping out in 2025.

Because of the state of the Marlins, their prospects in the upper levels will have plenty of chances to prove they belong. Over half of the players on this list were acquired via trade, 11 of 20 to be exact. They’ve reloaded their farm system in an effort to build a sustainable winner. In terms of positional breakdown, there are a lot of infielders. This top 20 is pretty heavy on hitting prospects. There are some really exciting names and potential all throughout the list.

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Top 20 Miami Marlins Prospects for Dynasty Leagues

1. LHP Thomas White, Age: 20

When teams select high school pitchers in the draft it’s because they have a tremendous upside. Thomas White has shown that in his first two professional seasons. He pitched in both A-ball levels last season throwing 96 innings with an 11.25 K/9 with a 2.81 ERA. White’s big strikeout rate is not an accident, he has a whole arsenal of potential swing-and-miss offerings. Everything points to him being a starter down the line. There are some command questions, but he showed in 2024 that he can throw enough strikes with a 3.56 BB/9 in 2024. The Marlins have had a run of good pitching prospects over the last few years and White is as good as any of them. He should see Double-A early, if not immediately, this season.

https://x.com/MLBPipeline/status/1796710034547597786

2. C Agustin Ramirez, Age: 23

When the Marlins traded Jazz Chisholm Jr. at the trade deadline, the best prospect they got in return was Agustin Ramirez. He’s a bat-first catcher who spent the 2024 season in Double-A and Triple-A where he hit .267 with 25 home runs and 22 stolen bases with good plate discipline numbers. The stolen base numbers shouldn’t be counted on, but his ability to draw walks and hit for power from the catcher position makes him an intriguing option. There is a question of where he lands in the field. The Yankees had him play first base, but following the trade he only caught. Ramirez is knocking on the door of the big leagues in 2025.

3. OF PJ Morlando, Age: 19

In the 2024 draft the Marlins once again went with a high school with huge potential, but this time it was outfielder PJ Morlando. He has a big frame and a great track record of hitting. Hitting in the professional ranks is much harder, but there is a lot of potential in Morlando’s bat. His raw power is certainly prevalent, but he will have to access that power in games. His debut in Single-A lasted just one plate appearance before he was shut down with a back injury. He should be healthy and ready to head back there in 2025.

4. RHP Noble Meyer, Age: 20

Before the Marlins took White in 2023, they took Noble Meyer 10th overall. Much like White, Meyer was selected as a prep pitcher who has a really big arsenal and a lot of potential. Even with the tremendous potential there is an equal amount of risk around his ability to consistently throw strikes. Despite a BB/9 over six in Single-A last year he still was able to post a 2.65 ERA with huge strikeout numbers. A promotion to High-A saw his BB/9 go north of seven with an ERA of 5.18 and a 9.45 K/9. Throwing strikes is a big, big concern. Meyer’s potential is still very high if he can bring it all together.

5. SS Starlyn Caba, Age: 19

The Marlins received Starlyn Caba as part of the Jesús Luzardo from an inter-division trade with the Phillies. The fantasy profile of Caba is an interesting one. His calling card is his glove, which gives him a great floor for his bat to play. Offensively he is patient at the plate with good bat-to-ball skills. In 2024 he walked at a 19.7 percent clip while striking out 14.4 percent of the time between the Complex and Single-A. He did hit only .228. Caba doesn’t project for much power, but he did steal 50 bases. There are some reasons to believe in his ability to hit, but as a glove-first shortstop, he will provide more value to Miami than fantasy lineups.

6. LHP Robby Snelling, Age: 21

Big strikeout rates helped Robby Snelling burst onto the scene almost immediately in 2023. He quickly climbed up to Double-A, which is where he started in 2024. He struggled with the Padres, but the strikeouts returned following a trade to the Marlins. Snelling will likely head back to Triple-A after throwing just six innings there last season. If the struggles were just a blip, then his strikeout rates as a starter make him a good bet to provide fantasy value. He did hit 97 MPH in Spring Training, which is a good sign.

7. 1B Deyvison De Los Santos, Age: 21

There was a lot of helium surrounding Deyvison De Los Santos when he got traded to the Marlins because it seemed like he had every path to playing time. Trading for Matt Mervis clouds that potential, but De Los Santos should still be in line for his debut this season. His power is undeniable and very attractive in fantasy circles. However, his aggressive approach and swing-and-miss are hard to gauge. Ideally he can consistently show off his power, but there is a world where he has a Rece Hinds-esque power surge then falls off in terms of production.

8. RHP Adam Mazur, Age: 23

It was a busy trade deadline for the Marlins in 2024, and part of that flurry of moves was receiving Adam Mazur from the Padres. The former Iowa Hawkeye was a second-rounder in 2022. He debuted for 33.2 innings in 2024 in San Diego with a 7.49 ERA with 22 strikeouts and 21 walks. Prior to his call-up, Mazur posted consistently low walk rates and better strikeout rates, implying better results with more time. In a fantasy baseball context Mazur’s proximity adds to value, but he’ll have to perform better in his second chance.

9. SS Jared Serna, Age: 22

The Yankees sent Jared Serna along with a few other prospects in the Jazz Chisholm Jr. trade. During the offseason, the Marlins added Serna to their 40-man roster. Between three levels and two organizations last season Serna slashed .251/.337/.414 with 15 home runs and 15 stolen bases. Miami promoted him to Double-A right after the trade and eventually got a handful of games in Triple-A as well. Serna will need more seasoning at the level but could be ready to contribute by the end of the season.

10. C Joe Mack, Age: 22

While Agustin Ramirez is likely to get the first chance in the big leagues, Joe Mack is the player who may eventually dethrone him as the starting catcher. Mack is better defensively and hit .241 with 22 home runs in Double-A last season. He walked nearly 10 percent of the time while striking out 25.7 percent of the time. If he can hit enough, his glove gives him a good chance to be a power-over-hit fantasy catcher. Mack should head to Triple-A to start the season and with some success may get a chance to prove his talents in Miami before the end of the year.

11. OF Luis Cova, Age: 18

After signing for $1.4 million Luis Cova hit .239 with 36 stolen bases with three home runs in 55 games in the DSL. The speed is real with more projection left on his ability to hit and hit with power. There is going to be a lot of time and risk involved with his profile, which makes him a tough player to rank for dynasty baseball purposes. Still, his upside is such that in leagues where rosters roll over from year to year, he’s worth rostering depending on the roster sizes.

12. SS Andrew Salas, Age: 17

Following in the footsteps of his brothers, Twins prospect Jose Salas and Padres prospect Ethan Salas, Andrew Salas was one of the most highly regarded players in the 2025 International Free Agency class. The Marlins signed him for $3.7 million. He has a 6-foot-2 frame to build with and gets high marks for his ability to hit the ball. Salas is a projectible switch hitter, but there is a real chance his glove provides more value than his bat. That would lower his fantasy baseball appeal.

13. LHP Keyner Benitez, Age: 18

Keyner Benitez earned his way to Single-A as an 18-year-old, where he posted a 9.05 K/9 with a 3.12 ERA in 57.2 innings. He did post a 4.06 BB/9. At its best his fastball gets into the mid-90s, but his changeup is already a whiff weapon. His age-to-level success and his pure stuff at this point make him a really exciting prospect. If he can achieve similar success pitching in either Single-A, High-A, or both this year then his name should gain more and more buzz. There’s a real breakout potential with him this season.

14. 3B Graham Pauley, Age: 24

In 2024 Graham Pauley debuted with the Padres, hitting .125 with a 46.9 percent strikeout rate and without walking a single time in 32 plate appearances. While not ideal, he did post much better numbers in the minors, with strikeout rates hovering around 20 percent and double-digit walk rates. Pauley was sent to the Marlins at the trade deadline. He’s still on the 40-man roster, but there isn’t a clear spot for him to get playing time. Still, he should see time with Miami in 2025 where he’ll have another chance for his highly touted bat to perform better.

15. SS Max Acosta, Age: 22

The Rangers signed Max Acosta as one of the best prospects in the 2019 IFA class. After four seasons where he steadily climbed to Double-A by 2024, he was sent to Miami in the Jake Burger trade over the offseason. As a 21-year-old last year in Double-A, he hit .288 with eight home runs and 26 stolen bases. He made a lot of contact, only striking out 13.4 percent of the time. Acosta will likely spend all or most of this season in Triple-A. If he can break into the Marlins lineup his biggest contribution to fantasy lineups is likely his speed.

16. OF Dillon Head, Age: 20

If there was any player in this ranking whose potential skills really outpace his ranking, it’s Dillon Head. The Padres selected him 23rd overall before sending him to the Marlins in the Luis Arraez trade. Head played just three games for Miami’s Single-A team before a season-ending hip injury. Even with the potential for loud tools, he’s totaled just nine steals and three home runs in his 53 games in his career. Head poses a contact and speed profile who could jump up rankings if the counting stats show up once he’s healthy.

17. OF Jakob Marsee, Age: 23

Another former Padres prospect who was dealt to the Marlins is Jakob Marsee. A breakout 2023 season was followed up by a sub-.200 batting average in Double-A. Still, walk rates over 15 percent allowed him to steal a total of 51 bases on the year. Marsee also totaled 10 home runs. He did play 22 games in Triple-A last season with more hitting success. His defensive prowess will give him runway to figure it out, but he’ll need to return to form at the plate if he’s going to be a fantasy-relevant prospect.

18. SS Carter Johnson, Age: 19

The Marlins’ second-round pick in 2024 was a high school infielder named Carter Johnson. After signing he was assigned to Single-A where he slashed .221/.273/.292 with a home run and a pair of stolen bases in 28 games. His profile is hit-tool-driven, so there may never be a ton of power. Johnson will be 19 years old for the entire 2025 season, where he likely heads back to the same level looking for better results in a larger sample. Right now, he projects as a deeper league batting average stabilizer unless another tool develops over the next few years.

19. SS Echedry Vargas, Age: 20

Another part of the Marlins’ return in the Jake Burger trade was Echedry Vargas. The surface numbers for Vargas were very good in 2024, hitting .276 with 14 home runs and 29 steals as a 19-year-old in 2024. What holds his ranking down for this list is his aggression at the plate. He walked just five percent of the time, which puts a lot of pressure on his ability to produce consistently for him to post the counting stats for fantasy baseball. There is talent there to believe improvement may come, but without growing into a carrying tool, his lack of patience may get exposed as he continues to climb the organizational ladder.

20. OF Andres Valor, Age: 19

Following a successful tenure in the DSL, Andres Valor continued to hit well as an 18-year-old on the Complex last season. His .289 batting average and 35 stolen bases are standout numbers. He showed some ability to walk with an 8.8 percent rate last season. At present there isn’t a lot of power, but there is still plenty of development to occur. Valor’s foundation of hit tool and clear ability to steal gives him a great starting place as he makes his full-season debut in 2025.

For more of the great fantasy baseball rankings and analysis you’ve come to expect from FantraxHQ, check out our full 2025 Fantasy Baseball Draft Kit! We’re here for you all the way up until Opening Day and then on into your championship run.

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