MACK - Top 28 Prospects - #25- RHRP - Hoss Brewer

 

The excitement about the Mets' prospect pipeline has been building year over year as the team improves their domestic and international scouting.  Many of the Mets' picks are being discussed throughout baseball, so Mack has boiled it down to the top 28 to give the readers a glimpse into the team's future.  This series will run for 28 days, counting down from #28 to #1.  The entire list can be viewed by clicking "2026 Top 28 Prospects" on the top menu bar.

25.    Hoss Brewer

GROK –

Hoss Brewer is a right-handed pitching prospect in the New York Mets organization. His full name is John Halsten Brewer, but he's commonly known as "Hoss" (a fitting nickname for his sturdy build—he stands 6'4" and weighs around 205 lbs).

Born on February 20, 2001, in Dallas, Texas, he bats left-handed but throws right-handed.

He began his college career at Seminole State College before transferring to the University of Arkansas-Little Rock (Little Rock Trojans), where he showed strong strikeout stuff—in 2024, he had 101 strikeouts over 84.1 innings with a 3.95 ERA.

The Mets signed him as an undrafted free agent or late-round pick after that college performance (around 2024). He started his pro career with limited innings in Single-A late that year.

In 2025, he emerged as a standout in the Mets' minors:

He began the season at Single-A St. Lucie Mets, posting an excellent 0.72 ERA over 25 innings early on with 30 strikeouts (very low ERA and high K rate).

He was promoted to High-A Brooklyn Cyclones mid-season.

Across levels, he continued to dominate in relief roles, with reports of a sub-2.00 ERA in stretches (e.g., around 1.62–1.65 in some mid/late-season samples).

He played a key role in Brooklyn's South Atlantic League championship run in September 2025, recording the final out (a save) in the clinching game with efficient pitching (e.g., 11 pitches, 7 strikes in one appearance).

Viewed as a promising bullpen arm with potential for middle relief in the majors due to his strikeout ability and stuff.

He's generated buzz for his performance and that memorable name—fans often call him "Ol’ Hoss Brewer."

He's considered a bright spot in the Mets' farm system for 2026 and beyond—keep an eye on him if you're following Mets prospects! If more specific scouting updates emerge, his arsenal could solidify as fastball-slider dominant for relief work.