Miami Marlins Breakout MLB Prospects For 2025

Entering 2025, we’re projecting a number of Marlins prospects to have the potential for a breakout season.

To qualify, a player must rank outside the organization’s Top 10 prospects entering the year. All scouting reports are from Baseball America’s 2025 Prospect handbook, which you can purchase here.

You can find Top 10 prospect rankings for all teams here and all breakout candidates here.

Andres Valor, OF

Preseason Rank: 15
BA Grade/Risk: 50/Extreme

Track Record: The Marlins landed Valor for $520,000 out of Venezuela in 2023, and he has been excellent since signing. In 105 career games across the Dominican Summer League and the complex league, he has hit .292/.367/.444 with 56 stolen bases.

Scouting Report: Valor has the prototypical body of a top prospect. He’s big, with both strength and mobility. At the plate, he’ll need to iron out a bucket-stepping move, but the ball jumps off his bat and with added strength and age, he projects to have average or better power at maturity. There is some chase and whiff in his game, but it isn’t alarming at this stage for someone who played all of last season at 18 years old. Valor is an excellent athlete and well above-average runner. Even if he adds weight, he projects to be a plus runner at peak. That speed also aids him in center field, allowing him to cover ample ground. He has a good shot to stick in center field. If he does move to right field, he should be an asset because of his range and solid-average arm.

The Future: Valor is an exciting young prospect who has thrived at every level thus far, all while showcasing five average or better tools. His next challenge will be full-season ball, and putting up another impressive showing there will rocket him up the national prospect landscape. His ultimate upside is that of a five-tool center fielder or right fielder.

Scouting Grades: HIT: 50. POW: 50. RUN: 60. FLD: 55. ARM: 55.

Jose Paulino, RHP

Preseason Rank: 16
BA Grade/Risk: 50/Extreme

Track Record: Paulino’s $350,000 was the largest bonus the Marlins gave out to a pitcher in the 2024 international signing period. He then went out to the Dominican Summer League for seven starts, striking out over a batter per inning while only allowing nine hits in 21 innings.

Scouting Report: At just 17 years old, Paulino is already sitting 95-98 mph without much effort. He has the frame to continue to add strength and velocity, and he could end up with a premium fastball when all is said and done. His best secondary pitch is a big two-plane curveball around 77-81 mph. His third pitch is a high-80s changeup that is still a work in progress. Paulino’s control and command need work. His delivery is fairly stiff and robotic, and he misses up with plenty of his fastballs. However, he has many years to refine it, so projecting his future control this far out is simply an exercise in guesswork.

The Future: Paulino is a ball of clay and the sky is the limit. The issues that he needs to work on are not uncommon for 18-year-olds: throw more strikes and develop a changeup. He has the potential to be a top-of-rotation starter, and Miami has shown the ability to develop this archetype in the past. Barring an unexpected acceleration, Paulino will likely spend all of 2025 in Rookie ball.

Scouting Grades: FB: 70. CB: 55. CH: 40. CTL: 45.

Abrahan Ramirez, 2B

Preseason Rank: 18
BA Grade/Risk: 50/Extreme

Track Record: Ramirez was something of an afterthought in the Yankees’ 2022 international amateur haul, overshadowed by bigger names like Roderick Arias. He signed for just $30,000, but has outperformed many of the higher-dollar signees in his class. He spent two seasons in the Dominican Summer League before coming stateside and spending 2024 in the Florida Complex League. He was traded to the Marlins at the 2024 trade deadline as one of the pieces that fetched Jazz Chisholm.

Scouting Report: Ramirez is on the smaller side, but he uses a noisy operation with a big load to generate power that befits someone much larger in stature. His balance and timing are good enough to do so without sacrificing contact rate or barrel ability. While he’s unlikely to add much more strength, he’s already hit balls over 110 mph with plenty of backside pop. Ramirez has also displayed impeccable plate discipline thus far, with a career walk rate around 18%. He is an above-average runner who gets out of the box well. Defensively, he has the hands and actions to play all over the dirt, though his average arm probably makes second base his likeliest home.

The Future: Ramirez is a polished prospect who has the potential to be an everyday second baseman who can hit for average, get on base, and slug—while adding some value on the bases and in the field. A big test will come in 2025 as he takes on full-season ball for the first time.

Scouting Grades: HIT: 55. POW: 50. RUN: 55. FLD: 55. ARM: 50.