Fish On First Prospects Report: Robby Snelling strikes out 12; highlighting brilliant Beloit bats

[Kevin Barral]

For the 2026 season, Fish On First will provide weekly reports on the Miami Marlins farm system, covering all levels. Here's the second edition of our Fish On First Prospect Report, which includes several important injury updates near the bottom of the page.

This report covers the games played from April 7-12.

 

Triple-A Jacksonville

The big story this past week was left-handed pitcher Robby Snelling (Fish On First No. 2 prospect), who struck out 12 over five innings of work in his last start against the Norfolk Tides. For his performance, he was named Fish On First Prospect Minor League Player of the Week.

Snelling's best weapon that night was his fastball, which generated half of his strikeouts. The pitch topped out at 96.4 mph and averaged 94.0 mph. He landed his four-seam all three times for first-pitch strikes. The only concern is that the velocity of the pitch went down as the game progressed, averaging as low as 92.8 mph in the fourth inning.

Four of Snelling's strikeouts came on his curveball and the other two on his changeup. His changeup generated six whiffs, more than any other pitch that night.

Robby Snelling fired up after strikeout #12 🤩

Scoreless start for him tonight with Jacksonville. pic.twitter.com/MPZJsXFJ04

— Fish On First (@FishOnFirst) April 11, 2026

Although many years removed from being a prospect, Braxton Garrett dazzled in his last start, going six shutout innings, not allowing a hit and striking out six. Garrett was named the International League Pitcher of the Week for April 6-12. Through his first three starts this season, he has a 0.59 ERA, 2.75 FIP, 9.98 K/9 and 2.93 BB/9 through 15 ⅓ innings pitched.

Fastball velocity continues to not be very impressive, topping out at 92.8 mph and averaging 90.7 mph. His secondary offerings have been great. All three whiffs on his slider came on strikeout pitches and was helped out by a high percentage of ground balls. Through his first three starts this season, he has a 64.5% ground ball rate, which is the highest of his career at any level. The high ground ball rate has allowed him to be efficient, averaging 11 pitches per inning in his last start.

Garrett isn't blowing anyone away, but he has been efficient, getting ground balls and mixing his pitches well. A call-up back to the big leagues shouldn't be far off.

On the offensive side, Jacob Berry has gotten off to a strong start, slashing .300/.370/.425/.795 with one home run, seven RBI and a 121 wRC+. After being known for slow starts, this is certainly a change of pace for the 24-year-old. Early results have shown him striking out only 17.4% of the time, which is less than his 2025 campaign (18.6 K%). For a second straight season, he is walking 10.9% of the time.

The downside continues to be his defense, committing five errors at third base. There is still no home defensively for Berry and that may hold him back from reaching the majors until there is a clear spot for him. He has played a little bit of right field and first base, but is below league average at those positions.

 

Double-A Pensacola

The Wahoos took to the road for the first time, trekking to Biloxi to take on the Shuckers. Overall, pitching struggled in the series paving the way for a Biloxi series win. The Wahoos had a minus-22 run differential.

Dillon Lewis, Fish on First’s fifth-ranked prospect, started to showcase his extremely loud tools in this series. He hit his first home run as a member of the Marlins organization on Wednesday and added three more hits over the course of the week, ending the series at 4-for-20. The 22-year-old also stole two bases.

Lewis is an optimal mix of size, strength and speed. He also showcases the ability not to get too overzealous and try to force power at the plate, keeping his actions fluid. For a hitter of his caliber, he has a fairly quiet approach and comes by extra bases easily due to both his ability to drive the ball and his foot speed which is well above average for an athlete of his stature. Long story short, this is a ball player in every sense of the word. As long as he continues to improve pitch recognition and keep his K rate within reason at the upper levels of the minors, there’s a very high ceiling for this player and potential to reach it in pretty short order.

Ian Lewis Jr., one of few Bahamians still in the Marlins organization (no relation to Dillon), made some noise over the weekend, particularly on Friday when he stole four bases. His primary offensive strength, Lewis accomplished the feat without the benefit of a hit. The marker set a Blue Wahoos single-game franchise record.

One of the longer tenured minor leaguers in the system, Lewis is pending minor league free agent participating at the Double-A level for the first time. While strikeouts have never been a huge problem for him, he also hasn’t earned an ordinate amount of walks. With the bat, he makes contact but does not drive the ball well and has struggled to keep it off the ground. Last season, he posted a 55% ground ball rate. Lewis doesn’t have to and likely will never hit for power, but he will need to at least start improving his bat speed and exit velocities if he is going to have a significant MLB impact. At the very least, Lewis is a plus defender and plus-plus pinch-runner off the bench.

 

High-A Beloit

It took another doubleheader, but the Sky Carp were able to get all of their games of a six game series in this week after being limited to just two games to open their season. Home at ABC Supply Stadium for the first time this year, they split the slate with Cedar Rapids. After dropping their Opening Day game, Beloit plated a whopping 35 runs the rest of the week, including 15 in the final game of the series.

Juan Matheus, who was part of the trade return for Ryan Weathers this offseason, hit three home runs in 2025. In the final game of this series, he hit two long balls, part of a 3-for-6, 10-total-base game. Along with the two homers marking his first career multi-homer game, his five RBI were also a career-high. The performance was the cherry on top of a great series for Matheus in which he went 8-for-23 with five extra base hits.

You wouldn’t know it by looking at the 5’11”, 155-pounder, but Matheus hits the ball hard at a consistent rate. He’s also put the ball in the air at a staunch pace, limiting his ground ball rate to around 40% yearly since joining the full-season ranks. Matheus is also a patient hitter who had limited strikeouts and held down solid walk rates including 12% at the highest level of pro ball he’s played at in 2025. One thing limiting Matheus’ ceiling is the fact that his batted ball profile is very pull heavy: he favored the pull side over 50% of the time last season, including 61% at High-A. With likely reaching his raw power ceiling, that pull-heavy propensity will be exploited at the next level. He will need to develop at least some ability to go the other way to reach a starter’s ceiling. That said, Matheus, who is a good fielder capable of playing multiple positions and who has good speed, has a solid floor as a future bench player. It’s nice to see him hitting consistently early in his Marlins tenure. Through eight games, he has a 179 wRC+.

It’s been quite a year already for Canadians in the Marlins organization. Catcher Connor Caskenette is no exception. The native of Duncan, British Columbia, owns one of the hottest starts to the season system wide, having gone 7 for his first 15 with two home runs and six RBI. He’s also recognizing High-A pitching very well, having walked eight times and struck out three times. Finally, he’s showing surprisingly good wheels especially for a backstop, having already stolen four bases.

The Marlins’ 12th-rounder in 2024, Caskenette is repeating High-A after being limited to 62 games between Beloit and Pensacola last season. Caskenette came out of the draft being scouted as a high-value pick for Miami, capable of plus average exit velocities and a high power production ceiling. The walks he’s put up against High-A stuff are also of little surprise to evaluators who lauded his low whiff rates and recognition of both velocity and offspeed pitches. Caskenette is definitely a bat-over-glove prospect, having committed 10 errors and allowed a whopping 130 steals on 144 attempts last season. It is highly likely he will move off the backstop position, possibly to first base or a corner outfield spot. The bat should carry him to a decent floor though especially if he continues to find fences and limit Ks.

Liomar Martinez struggled with control in his first outing of the season but he wiped the slate and rebounded nicely against the Kernels. Much more in and around the zone, the 6’2”, 165-pound righty worked five innings on three hits and two earned runs. He struck out nine and, most refreshing of all, did not walk a batter. Liomar averaged 95 mph with his fastball and reached as high as 98. He particularly impressed with his changeup that showed nice arm-side fade and sole vertical drop.

The first two starts of Liomar’s season sum him up pretty well: everything hinges on control consistency. A lanky arm who throws with high effort through a delivery that consists of a lot of moving parts, there’s reliever risk here, but good raw stuff gives him a solid floor.

With control consistency via quieter mechanics, Martinez has the ceiling of a back-end starter. The upper minors will be a crucial test for him. That step could be taken late this year or to start next year.

 

Low-A Jupiter

Both Luis Ramirez and Samuel Carpio are off to strong starts this season, yet to allow an earned run through their first three appearances. Ramirez, who the Marlins signed back in 2022, has recorded six strikeouts and zero walks through four inning of work. Carpio, who was signed just a year later, has three strikeouts in three innings pitched.

Walin Castillo, who is repeating Low-A, has posted a 1.29 ERA, 4.41 FIP, 9.00 K/9 and 6.43 BB/9 through seven innings pitched this season.

Offensively, Carter Johnson is slashing .192/.382/.346/.729 with one home run, three RBI and a 130 wRC+. Although you'll see a low batting average, he is getting on base by walking 20.6% of the time.

Abrahan Ramirez, who was acquired in the Jazz Chisholm Jr. trade in 2024, is repeating Low-A. Through the first eight games of the season, Ramirez is slashing .364/.462/.409/.871 with three RBI and a 166 wRC+. At 21 years old, he's still got plenty of time to develop, and as the season progresses, you should see a promotion to High-A.

 

Injuries/rehab

Fish On First has learned that right-hander Grant Shepardson will be undergoing Tommy John surgery in the near future. Shepardson, 20, was last seen pitching in last month's Spring Breakout game. He would've been assigned to Jupiter if healthy entering the regular season. Instead, he isn't expected to return to game action until mid-2027.

Outfielder Cam Cannarella is the latest early-round pick from the 2025 draft class to be sidelined. He fractured his left wrist during Saturday's Sky Cap game.

 

Kyle Stowers (Grade 1 right hamstring strain) participated in two rehab games with Jacksonville last week, going 1-for-6 with three strikeouts. His lone hit had an exit velo of 108.2 mph. As of this writing, Stowers is playing in his third rehab game and serving as the designated hitter.

In two rehab starts with Jupiter, Thomas White (oblique strain) tossed a combined six innings, allowing two runs (one home run) on three hits, 10 strikeouts and six walks. Control/command continues to be an issue for White, but sources tell FOF that he's been cleared to rejoin the Jumbo Shrimp. He will make his first AAA start of the season on Thursday.

 

This week's MiLB schedule

• Triple-A Jacksonville vs. Charlotte
• Double-A Pensacola vs. Knoxville
• High-A Beloit at South Bend
• Low-A Jupiter at Palm Beach

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