Scouting Report

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Scouting grades: Fastball: 70 | Slider: 55 | Control: 40 | Overall: 45

All summer long, Sime Jr. showed off what scouts like about him, namely his arm strength, and what concerns there are, namely his command. The New York City native who attends Poly Prep announced his presence with authority at events like East Coast Pro Showcase and PG National but often struggled with finding the strike zone. At the Area Code Games, he walked the bases loaded, then struck out the side, which looked like he was turning a corner. That trend continued when he largely filled up the zone and struck out two at Major League Baseball’s High School All-American Game and he showcased similar stuff, and a little better feel, this spring, including at USA Baseball’s National High School Invitational.

A participant in MLB Develops programs like the Breakthrough Series and Dream Series, Sime has been lighting up radar guns for some time. He averaged over 95 mph with his heater throughout the summer and is routinely up to 98-99 mph, touching triple digits at times, and he’s been reaching those elite-level velocities this spring. The pitch has serious life to it, and he can sink it, with one scout calling him a “pure rock thrower.” The pitch can be so devastating that he hasn’t always needed anything else, but he’s worked hard on his breaking ball. He has feel to spin a 78-81 mph hard slider, landed a good one in the zone in the All-American Game and seemed more comfortable with it during his senior season. 

The biggest thing holding Sime back is his ability to consistently land his power arsenal in the zone. It was better at the end of the summer and for much of the spring, and it’s clear he understands he needs to improve that and the consistency of his secondary stuff to move up boards. Likened to a better-conditioned Armando Benitez, Sime is committed to Louisiana State should the Draft not work out. 

Scouting grades: Fastball: 70 | Curveball: 55 | Changeup: 45 | Control: 40 | Overall: 45

A Queens native, Sime was a source of constant intrigue on the summer showcase circuit for his elite velocity, and he started to show a little more polish during his senior year at Brooklyn’s Poly Prep Country Day School, including in two outings at USA Baseball’s National High School Invitational. He made three appearances in the MLB Draft League (including one at Citi Field in an All-Star matchup against the Cape Cod League) to round out his résumé, and the Nationals selected him in the fourth round last July. The LSU commit signed for $2 million, almost triple the slot value for the 111th overall pick.

The 6-foot-4 right-hander first touched triple digits when he was 16 years old, and he’s continued to pump premium heat since then, eclipsing 100 mph five times during his stint in the Draft League. Sime has good life on the four-seamer too, and he was able to blow it by batters in multiple settings. His low-80s curveball shows off his feel for spin with nice drop and a little sweep, and in his first spring, he’s toying with a gyro slider that would give him a harder breaking ball on top of that. His 85-88 mph changeup can fool batters with its velo differential and armside movement, but it’s likely to be his third pitch at best.

Sime can have a long arm action, and he struggled as an amateur at times to land his stuff consistently in the zone. Professional batters will be more willing to lay off his power arsenal if he can’t throw more strikes, so there’s real reliever risk here even for someone who will still only be 18 on Opening Day 2026. Sime should be an interesting project for the Nationals’ new player development apparatus in its first year.

Scouting grades: Fastball: 70 | Curveball: 55 | Changeup: 40 | Control: 40 | Overall: 45

All summer long, Sime Jr. showed off what scouts like about him, namely his arm strength, and what concerns there are, namely his command. The New York City native announced his presence with authority at events like East Coast Pro Showcase and PG National but often struggled with finding the strike zone. At the Area Code Games, he walked the bases loaded, then struck out the side, which looked like he was turning a corner. That trend continued when he largely filled up the zone and struck out two at Major League Baseball’s High School All-American Game. He showcased similar stuff, and a little better feel, this spring, particularly at USA Baseball’s National High School Invitational. After a turn in the MLB Draft League, he went to the Nationals in the third round and signed for $2 million.

A participant in MLB Develops programs like the Breakthrough Series and Dream Series, Sime has been lighting up radar guns for some time. He averaged over 95 mph with his heater throughout the summer and was at 96-99 mph in short spurts in the MLB Draft League, touching triple digits five times. The pitch has serious life to it, and he can sink it, with one scout calling him a “pure rock thrower.” The pitch can be so devastating that he hasn’t always needed anything else, but he’s worked hard on his breaking ball. He has feel to spin a low-80s curveball -- landed a good one in the zone in the All-American Game -- and seemed more comfortable with it during his senior season. There’s also an 85-88 mph changeup that he’ll need to develop a feel for in pro ball.

The biggest thing holding Sime back is his ability to consistently land his power arsenal in the zone. It was better at the end of the summer and for much of the spring, and it’s clear he understands he needs to improve that and the consistency of his secondary stuff to move up the ladder toward Washington.

Transactions

Team	Date	Transaction
	03/05/2026	RHP Miguel Sime Jr. assigned to Washington Nationals Prospects.
	03/05/2026	Washington Nationals Prospects activated RHP Miguel Sime Jr..
	03/05/2026	Washington Nationals Prospects activated RHP Miguel Sime Jr..
	08/04/2025	FCL Nationals activated RHP Miguel Sime Jr..
	07/22/2025	RHP Miguel Sime Jr. assigned to FCL Nationals.
	07/22/2025	Washington Nationals signed RHP Miguel Sime Jr..
	06/27/2025	MLB Draft League All-Stars activated RHP Miguel Sime.
	06/14/2025	Trenton Thunder activated RHP Miguel Sime.
	06/14/2025	RHP Miguel Sime assigned to Trenton Thunder.
	06/14/2025	Trenton Thunder activated RHP Miguel Sime.
	06/03/2025	Trenton Thunder activated RHP Miguel Sime.
	06/03/2025	RHP Miguel Sime assigned to College Workout.
	08/16/2024	RHP Miguel Sime Jr. assigned to High School Workout.
	08/12/2024	RHP Miguel Sime Jr. assigned to High School Workout.
	06/30/2024	High School Workout activated RHP Miguel Sime Jr..