Matthew Semon
Matthew Semon
Matthew Semon




St. John's
Don Bosco Prep (HS) • NJ
6-3 • 185LBS • R/R
Travel Team: Tri State Arsenal Prime


2018 National

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2018 State

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Best of Snapshot
Pitching Velos

Positional Tools




Pitch Scores

Pitching Velos

Velocity Max
Velocity Avg
Velocity Avg
17U National Championship
Jul 14, 2021
Max FB
81 - 86
68 - 72

Game Performance

Visual Edge

Pitch Ai



One of the top 2018 uncommitted prospects, and a high riser in the rankings. Semon has a lean, lanky-athletic body type at 6-foot-3 185-pounds with room to fill out frame. Fastball showed some life at 87-88 touching 89 from a high-3/4 slot. Short, whippy and loose arm action, Semon showed the ability to command both sides of the plate against one of the most potent offenses in the state. Fastball has armside run that he uses to create poor contact especially on right handed hitters. Curveball had smallish 10/4 depth at 70-74 mph. Changeup was a plus pitch for him on this day, creating multiple swings and misses at 77-78 with fastball arm speed. Went 5.2 IP, 7 H, 2 K, 1 BB with multiple soft contact outs.

Underclass Games (September 18th, 2016)

Semon has a lean, athletic build at 6-foot-3 185-pounds. One of the top prospects to keep an eye on from the event. Fastball 84-86, curveball 69-72 mph with sweeping-like 11/5 action. When his fastball command is best, gets some natural armside run. Has a tendency to speed up delivery too much, causing mechanics to get off kilter. Gloveside dips causing his arm to lag behind and miss armside high, or arm over compensates for gloveside and he pulls pitch toward his gloveside. Easy mechanical corrections that could lead Semon to continue to develop into one of the top pitchers in the 2018 class. Short, quick arm action with excellent shoulder tilt going down the mound. Just needs to clean up gloveside. Explosiveness and athleticism is there, still more in the tank - still physically maturing. High follow prospect.

10/18/15 --
Semon was one of the two best pitchers on New Jersey's staff in terms of performance. The right-hander managed to slow down an older New York squad that had managed 6 runs in the first 4 innings against high quality pitchers. He has smooth, easy rhythm and pitches with presence and confidence. His fastball dives to the arm side and was 77-80 miles-per-hour, touching 81. His breaking ball is sharp 11-to-5 at 67-70 MPH an his changeup is very similar to his fastball in hand speed and action at 74-75 MPH. The low effort and three-pitch mix will have him as one of the most sought after 2018s this spring/summer.
9/20/15 -- Semon is 6-foot-1, 170 pounds; loose and projectable. His delivery has good rhythm, he keeps his front side closed well, and accomplishes very good hip-shoulder separation. He has a long, clean arm action and pitches from a 3/4 arm slot. He has nasty two-seam sink at 79-82 miles-per-hour and a tight, 11-to-5 breaking ball with late action at 69-70 MPH. He also showed above average feel for a late fading changeup. Semon is going to have a chance to be a highly touted RHP.
4/2/16 - Semon stands at 6-foot-1, 170-pounds. He came into the game against Immaculata to close it out.  Semon was 81-83 on a sloppy afternoon, struck out two. Curveball was at 69-70 with tight spin and bite.  Semon shows very good mechanics and a good feel for his body, and he still has room to grow. He throws from a true 3/4 angle. His hands and leg lift move in sync with each other, creating fluidity to his motion. He has very good upper body tilt when his front leg first lands, projecting that "whip" motion in a pitcher's delivery.

Draft Reports


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