P | Bats/Throws: R/R | 6' 5" 190 lbs | Age: 19
Draft: 2025 | Rd. 3, No. 80, Washington Nationals | East Union Attendance Center HS
MLB Pipeline Rank
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Scouting Report

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Scouting grades: Fastball: 65 | Slider: 55 | Changeup: 45 | Control: 50 | Overall: 50

Mississippi has produced just one prep pitcher selected in the top two rounds since the turn of the century: unsigned Dodgers first-rounder J.T. Ginn in 2018. The Magnolia State may have another in Harmon, who combines velocity and projectability better than most high school arms in the 2025 Draft. He can run his fastball to 99 mph with ease and can add a lot more strength to his slender 6-foot-5 frame.

Harmon sits at 93-96 mph with his fastball, delivering it on a flat approach angle with carry and arm-side run. He'll manipulate the shape of his solid slider, varying it from a low-80s sweeper to a harder, tighter version to an upper-80s cutter. He hasn't had much need or shown much feel for his low-80s changeup.

For a tall teenager, Harmon does a nice job of keeping his delivery in sync and pounding the strike zone, though he'll sometimes rush his mechanics with runners on base. The Mississippi State commit moves well and uses his size to create extension that allows his pitches to get on hitters quickly. He generates premium velocity with athleticism and arm speed rather than effort and could be a frontline starter with continued development of his secondary pitches.


2025

Scouting grades: Fastball: 65 | Slider: 55 | Changeup: 45 | Control: 50 | Overall: 50

Entering 2025, Mississippi had produced just one prep pitcher selected in the top three rounds since the turn of the century: unsigned Dodgers first-rounder J.T. Ginn in 2018. The Magnolia State got another in Harmon, who combined velocity and projectability better than most high school arms in the 2025 Draft. The Nationals selected the 6-foot-5 righty in the third round and signed him for above slot at $2.5 million.

Harmon sits at 93-96 mph with his fastball and can run it up to 99 mph with ease, delivering it on a flat approach angle with carry and arm-side run. There might be room for more velocity too as he adds strength to his slender frame. He'll manipulate the shape of his solid slider, varying it from a low-80s sweeper to a harder, tighter version of an upper-80s cutter. He hasn't had much need or shown much feel for his low-80s changeup.

For a tall teenager, Harmon does a nice job of keeping his delivery in sync and pounding the strike zone, though he'll sometimes rush his mechanics with runners on base. The former Mississippi State commit moves well and uses his size to create extension that allows his pitches to get on hitters quickly. He generates premium velocity with athleticism and arm speed rather than effort and could be a frontline starter with continued development of his secondary pitches.


Transactions

Team Date Transaction
08/04/2025 FCL Nationals activated RHP Landon Harmon.
07/25/2025 RHP Landon Harmon assigned to FCL Nationals.
07/24/2025 Washington Nationals signed RHP Landon Harmon.
06/03/2025 RHP Landon Harmon assigned to College Workout.
09/10/2024 RHP Landon Harmon assigned to High School Workout.
08/16/2024 RHP Landon Harmon assigned to High School Workout.
08/12/2024 RHP Landon Harmon assigned to High School Workout.
06/30/2024 High School Workout activated RHP Landon Harmon.
09/19/2023 States Play - East activated RHP Landon Harmon.
09/19/2023 States Play - East activated RHP Landon Harmon.