One year later, Marlins still waiting on positive impact from Agustín Ramírez

[Kevin Barral]

On April 21, 2025, Agustín Ramírez began his major league career with high expectations. He was arguably the top position player prospect in the Miami Marlins organization, with an impactful bat that could be plugged into the middle of the order, plus the ability to play catcher on a part-time basis.

Tuesday marks one full year of the "Gus Bus" experience. It has been a mixed bag.

For starters, Ramírez has been durable. With few exceptions, the Marlins have started him as their designated hitter on days when he isn't catching, using him in 158 total games. That easily leads the team over the past calendar year (Otto Lopez ranks second with 145 games). Ramírez also has the most plate appearances (676) and runs scored (83) since debuting, trailing only All-Star Kyle Stowers in home runs (23).

However, the overall quality of his hitting has been below average. Ramírez's career slash line of .230/.288/.408/.696 with a 90 wRC+ (100 represents league average). The results are pretty much the same regardless of whether he's facing left-handed or right-handed pitching.

Ramírez offers an exciting combination of raw power and contact ability. He has one of MLB's fastest bat speeds and a career strikeout rate of 19.8%. His career hard-hit rate is 45.3%, similar to the likes of Marcell Ozuna and Teoscar Hernández.

Even with a full year body of work, it's fair to say that Ramírez has been the victim of bad luck. Hitters with his batted ball quality usually perform well on balls in play, but his career BABIP is only .255, which is 36 points below the league average during that span. He should see some improvement moving forward, especially if he reduces his ground balls.

Ramírez has been worse than replacement level according to both Baseball-Reference (-0.6 bWAR) and FanGraphs (-0.1 fWAR), and that is mainly because of his defense.

Used exclusively as a catcher, Ramírez has totaled minus-16 defensive runs saved and minus-14 fielding run value. He leads MLB catchers with 13 errors and 22 passed balls since the start of 2025. There have been 100 stolen bases with him behind the plate compared to only 10 runners caught stealing, as his pop time is inconsistent and he frequently mishandles the ball when transferring it from his glove.

While some of these weaknesses are physical, Ramírez told Fish On First earlier this month that "the mental side has been the biggest thing for me" regarding the transition from the minors to the majors.

Marlins manager Clayton McCullough insists that there have been "real strides" made by the 24-year-old since his rookie season. "I think all the work he put in this offseason has continued to put, it's showing." Ramírez has also added a bit of value with his usage of the new ABS challenge system, overturning 14 balls into called strikes on 21 challenges (a 66.7% success rate).

Unfortunately, big mistakes overshadow his small improvements. On this homestand alone, Ramírez effectively lost the Marlins a game on Friday when he was unable to make a catch in the 10th inning, and his poor blocking allowed the St. Louis Cardinals to manufacture runs on two separate occasions during's Monday game (which Miami won).

With terrific catching prospect Joe Mack on track to reach the majors this summer, Ramírez is certain to see a more limited workload defensively. The question will be whether his bat heats up enough to still keep him in the lineup on a daily basis.

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[Jose Herrera]

Embrace doing the little things right Gus.