Justin Slaten Boston Red Sox Pitcher

       
 
Age: 28
Born: September 15, 1997
Birthplace: Longview, TX
Height: 6-4
Weight: 220
Bats: Right
Throws: Right
   
Drafted: 3rd round, 2019 by TEX
How Acquired: Acquired from NYM for Ryan Ammons and cash considerations following selection in the Rule 5 Draft (Dec. 2023)
College: New Mexico
High School: Hallsville (TX)
   

Photo © Kelly O'Connor
Justin Slaten photos by Kelly O'Connor
Pronunciation: SLATE-in
First Pro Contract: June 12, 2019 (TEX)
Signing Scout: N/A
Signing Bonus: $575,000
Rule 5 Draft Eligible: N/A
MLFA Eligible: N/A
   
Pro Debut: June 20, 2019 (AZL Rangers)
Added to 40-man: December 6, 2023 (BOS)
MLB Debut: March 30, 2024 (BOS)
Service Time (1/25): 1 year
Options Remaining: 3 (0 used)
Contract (2025): $776,000
   
Twitter: @JSlaten32
Instagram: @justin.slaten

 
 
 
 
 
     
  Scouting Report & Links      
         
  Physical Description: Thick, sturdy frame. No remaining projection.

Mechanics: Throws from a three-quarters arm slot. Long arm action. Max-effort delivery.

Fastball: 95-99 mph. Pitch shows life up in the zone and strong bat-missing ability. Potential plus-to-better offering.

Cutter: 88-91 mph, tops out at 94 mph. Short, horizontal break.

Slider: 82-85 mph. Sweepy shape. Has shown bat-missing ability with the pitch. Able to bury down and out of the zone and elicit chases.

Curveball: 81-83 mph. Two-plane break. Show-me pitch. 		  Career Notes: Was selected by the Mets in the 2023 Rule 5 Draft (in his second year of eligibility) and immediately traded to the Red Sox for Ryan Ammons and cash considerations. Reportedly had a lot of pre-draft buzz. Was subject to Rule 5 restrictions for the 2024 season. Participated in the Red Sox Rookie Development Program in January 2024.

Summation: Solid middle reliever with high-leverage potential. Fastball, slider and cutter give him three usable pitches. Has taken the necessary steps forward with his command and control to project as a major league bullpen piece. Has the stuff and demeanor you look for in a bullpen arm.

Links
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    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
2017 New Mexico MWC NCAA - 19 2 2 3.74 23 0 0 33.2 37 16 14 3 0 16 27 1.57 7.22 4.28
  2018 New Mexico MWC NCAA - 20 2 9 7.02 15 14 0 66.2 89 65 52 7 0 30 62 1.79 8.37 4.05
  2019 New Mexico MWC NCAA - 21 5 5 2.51 13 13 0 82.1 65 31 23 3 10 36 98 1.23 10.71 3.94
  2019 Arizona Rangers Ariz Rk Tex 21 0 0 0.00 1 0 0 1.0 0 0 0 0 0 0 1 0.00 9.00 0.00
  2019 Spokane Indians Nwst A- Tex 21 0 2 6.46 10 10 0 15.1 21 13 11 2 0 7 21 1.83 12.33 4.11
  2021 Hickory Crawdads SAL A+ Tex 23 4 8 6.01 20 19 0 82.1 93 60 55 17 4 31 110 1.51 12.02 3.39
  2022 ACL Rangers ACL Rk Tex 24 0 0 0.00 1 0 0 1.0 0 0 0 0 0 0 2 0.00 18.00 0.00
  2022 Frisco RoughRiders Tex AA Tex 24 1 6 6.93 25 5 0 50.2 49 41 39 6 0 48 64 1.91 11.37 8.53
  2023 Frisco RoughRiders Tex AA Tex 25 4 3 3.16 35 1 2 51.1 41 21 18 9 0 16 76 1.11 13.32 2.81
  2023 Round Rock Express PCL AAA Tex 25 1 0 1.08 5 0 0 8.1 3 1 1 1 0 4 10 0.84 10.80 4.32
2024 Portland Sea Dogs East AA Bos 26 0 0 27.00 1 0 0 0.1 1 1 1 0 0 1 1 6.00 27.00 27.00
2024 Boston Red Sox AL MLB Bos 26 6 2 2.93 44 0 2 55.1 47 21 18 4 2 9 58 1.01 9.43 1.46
2025 Worcester Red Sox IL AAA Bos 27     stats                            
  2025 Boston Red Sox AL MLB Bos 27     stats                            
   
     
  Advanced Stats & Splits
   
     
  Awards   SoxProspects.com Awards  
  South Atlantic League Pitcher of the Week (July 5-11, 2021)   -  
   

   
     
 
 		  
     
 
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