Inside the Amed Rosario Trade: What Clayton Beeter and Browm Martinez Mean for the Nationals’ Future

After adding to their depleted farm system through the draft just two weeks ago, the Washington Nationals have now shifted focus to the Trade Deadline. While we all await the fate of Mackenzie Gore, interim GM Mike Debartolo has begun selling off veteran rentals by dealing Amed Rosario to the New York Yankees. Although Rosario is now primarily a solid platoon bat with below-average defense, the Nats were able to acquire a couple of intriguing pieces from the Yankees. Let’s examine what the Nationals received.

Clayton Beeter is the more major-league-ready of the two players acquired. Beeter, who turns 27 in October, was drafted by the Los Angeles Dodgers in the second round of the 2020 MLB Draft out of Texas Tech. He was later traded to the Yankees for Joey Gallo at the 2022 trade deadline. After continuing as a starter for the Yankees through 2022 and 2023, he made his MLB debut on Opening Day 2024, pitching a scoreless inning against the Houston Astros before being sent back to AAA. He remained a starter at AAA Scranton/Wilkes-Barre until a shoulder injury in May set him back. Upon returning in September, Beeter was moved permanently to the bullpen, where he made a few appearances for the Yankees at the very end of the season.

In spring training, vying for a bullpen spot, Beeter suffered another shoulder injury, causing him to miss the first few weeks of the season. While he made a few appearances for the Yankees this July, most of his season has been spent in AAA. In AAA this year, Beeter has pitched 20.1 innings with a 3.10 ERA, 2.75 FIP, 35.1% strikeout rate, 17.0% walk rate, and 52.4% ground ball rate. However, his 3.2 MLB innings this year have been poor, with numbers not worth noting.

.

Beeter now primarily relies on two pitches from his over-the-top arm slot. His main offering is a four-seam fastball that sits in the low-to-mid 90s and averages 17.7 inches of induced vertical break (IVB), causing it to stay up in the zone longer. For reference, 17.7 IVB would place him in the top 25% of all MLB four-seam fastballs. His slider is a sharp gyro slider rather than a sweeping one. Both primary pitches can grade as plus offerings. While Beeter has previously flashed a curveball and changeup, he appears to have abandoned them, as they remain below-average.

Despite quality stuff, Beeter’s control remains an issue and appears to have regressed. After posting 13.1% and 13.4% walk rates in 2023 and 2024, respectively, it has climbed to 17% this year. His strike-throwing percentage, historically unimpressive, also hasn't improved (61% in 2023, 62% in 2024, 60% in 2025).

Despite this, Beeter succeeds in generating swing-and-miss, both in the zone and on chases. In AAA, he boasts a 15% swinging strike rate, 30.5% chase rate, and a 37.1% whiff rate—all above average, with the whiff rate among the very best. The next step for Beeter is to translate his stuff into big-league success, which he has yet to do in limited opportunities. Now with a clearer path to the majors, Beeter should have a chance to address his weaknesses without the threat of immediate demotion. If he can improve his command, he has late-inning reliever upside.

On the opposite end of the spectrum, the Nationals acquired Browm Martinez, a soon-to-be 19-year-old outfielder who has only played in the Dominican Summer League (DSL) for the Yankees. Signed for $130,000 during the 2024 international free agent period, Martinez had an underwhelming first season, posting a below-average 97 wRC+ in 140 plate appearances with minimal power (.035 ISO, 0 HR).

Returning to the DSL in 2025, Martinez broke out before suffering an injury that has sidelined him since July 3rd. His pre-injury stats:

While advanced data is limited as he has not yet played stateside, there are notable takeaways from his progression. First, Martinez appears to have tapped into his power potential—achieving this by lowering his ground ball rate by 14% and increasing his pull rate by 8%. Hitting the ball in the air more is the surest way to unlock power, and Martinez has clearly done more of that this year.

His second area of improvement is plate discipline. While his strikeout and walk rates were reasonable last season (17.9% K rate, 10.7% BB rate), he has become more disciplined, cutting his swing rate by over 15%, down to 49.4%. Greater selectivity limits chasing pitches out of the zone. Additionally, Martinez increased his contact rate from 55% to 70% and slashed his swinging-strike rate from 28.8% to 14.6%. While league average among DSL hitters, the improvement is notable, especially as his isolated power now ranks 30th out of 619 batters (minimum 60 plate appearances).

Though Martinez is essentially a lottery ticket, he is still very young—only a few months older than highly-touted draftees Miguel Sime and Coy James, and a couple of months younger than third-round pick Landon Harmon. There is plenty of room for both physical and baseball development. If he maintains his power gains without sacrificing plate discipline in his expected stateside debut next year, Martinez could become a notable prospect in the farm system.

The Nationals did well to turn a low-cost offseason acquisition into two interesting prospects. Beeter may not have top-tier upside, but the Nationals bullpen has been desperately in need of someone with swing-and-miss ability. If he can harness his command, Beeter could make an immediate contribution.

Martinez, while a long shot, has nonetheless flashed real upside. Next up will be attempts to move Kyle Finnegan, Michael Soroka, and potentially even Nathaniel Lowe as we move toward Thursday’s deadline.