Matt Duffy Full-Season Injured List Pitcher

       
 
Age: 24
Born: October 4, 2001
Birthplace: Burlington, ON
Height: 6-2
Weight: 205
Bats: Left
Throws: Right
   
Drafted: 4th round, 2023 by BOS
How Acquired: Draft
College: Canisius
High School: Assumption Catholic (ON)
   

Photo © Kelly O'Connor
Matt Duffy photos by Kelly O'Connor
Pronunciation: ---
First Pro Contract: July 21, 2023 (BOS)
Signing Scout: Ray Fagnant
Signing Bonus: $350,000
Rule 5 Draft Eligible: December 2026
MLFA Eligible: November 2028
   
Pro Debut: August 22, 2023 (FCL)
Added to 40-man: ---
MLB Debut: ---
Service Time (1/25): 0 days
Options Remaining: 3 (0 used)
Contract (2025): MiLB contract
   
Twitter: @mattduffyy
Instagram: @matt.duffyy

 
 
 
 
 
     
  Scouting Report & Links      
         
  Physical Description: Average frame with minimal remaining projection.

Mechanics: Throws from a three-quarters arm slot. Unique arm action that generates a lot of deception. Hooks arm behind and hides the ball well. Gets solid extension.

Fastball: 92-94 mph. Tops out at 95 mph. Good command and control. Fastball plays above its velocity due to carry and deception. Gets swinging strikes up in the zone, at least so far in the low minors. Saw a solid uptick in velocity over the course of the 2024 season, sitting 90-92 early in the season. Potential fringe-average pitch despite below-average velocity, but increase during 2024 season gives some hope he can improve in that respect over a full season..

Cutter: 84-86 mph. Added the pitch in pro ball. Clear work in progress.

Changeup: 80-82 mph. Best secondary pitch. Thrown with deceptive arm speed and good separation from his fastball. Has good feel and confidence in the pitch. Shows late fade. Potential above-average pitch.

Slider: 80-85 mph. More horizontal, 10-to-4 break. Sharp when he snaps it off but is inconsistent. Below-average spin rate, but does a good job sequencing the pitch.
  Curveball: 77-80 mph. Sharp, 11-to-5 break when he snaps it off, but does not do so consistently. Mostly throws outside the zone looking for chases.

Career Notes: Father, Phil, pitched for the Rookie affiliate of the Kansas City Athletics in 1964. Younger brother, Aaron, is a pitcher at Canisius now entering his senior season. Also played volleyball and basketball in high school. Was committed to transfer to South Carolina for the 2024 college season prior to signing. Played for the Bourne Braves in the Cape League in 2022. Named MAAC Pitcher of the Year and MAAC Championship MVP in 2023. Underwent Tommy John surgery in March 2025 and likely will not return until the middle of the 2026 season.

Summation: Solid pitchability type with some intriguing pitch characteristics. Fastball is on the light side, but had a promising velocity jump during the 2024 season, and he commands it well and it shows some carry up. Changeup is best secondary pitch right now. Had better results later in the 2024 season, but was facing younger competition and ideally will advance faster in coming seasons as he acclimates to pro ball from pitching in Canada in high school and at a smaller, Northeast college program.

Links
Red Sox select Matt Duffy with fourth-round pick (7.10.23)
 
   
     
    Pitching Stats                                          
  year team lg level org age w l era g gs sv ip h r er hr hbp bb so whip k/9 bb/9
2021 Canisius MAAC NCAA --- 19 3 0 2.67 6 3 0 27.0 21 9 8 1 3 5 30 8.67 10.00 1.67
2022 Canisius MAAC NCAA --- 20 8 2 3.81 17 16 0 104.0 86 51 44 13 11 26 124 1.07 10.73 2.25
2023 Canisius MAAC NCAA --- 21 6 3 4.32 14 14 0 83.1 66 42 40 14  8 25 124 1.09 13.39 2.70
2023 FCL Red Sox FCL Rk Bos 21 0 0 0.00 1 0 0 1.0 0 0 0 0 0 0 1 0.00 9.00 0.00
2023 Salem Red Sox Car A Bos 21 0 1 13.50 2 2 0 3.1 4 5 5 2 1 2 4 1.80 10.80 5.40
2024 Salem Red Sox Car A Bos 22 4 5 2.83 22 21 0 98.2 81 35 31 8 5 27 100 1.09 9.12 2.46
2025 DNP-INJ --- --- Bos 23 --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- ---
2025 Greenville Drive SAL A+ Bos 23     stats                            
   
     
  Advanced Stats & Splits
   
     
  Awards   SoxProspects.com Awards  
  2021 All-MAAC Rookie Team
2021 MAAC All-Championship Team
2022 MAAC All-Academic Team
2022 All-MAAC First Team
2022 MAAC Championship MVP
2022 MAAC All-Championship Team
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