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Justin Slaten BOS RP R 15IL 

Born: 09/15/1997 Age: 27

FanGraphs Player Page

2025 OPL OPL Player Page

On MLB 40-man: YES
Acquired: Trade (NYM) Dec'23

Sat 6/07 Sun 6/08 Mon 6/09
@NYY 7:35 PM EDT @NYY 7:10 PM EDT TBR 7:10 PM EDT

Positions
RP
2026 Earned Positions
RP

All Leagues
Average $2.64 Median $3.00
FanGraphs Points
Average $2.61 Median $3.00

All Leagues
Average $2.00 Median $2.00
FanGraphs Points
Average $2.20 Median $2.00

Roster%
74.85%
Change
7Day 13.19%
30Day 17.79%

2025 OPL 2025 OPL Round 2
OPL Roster%
6.47%
OPL Average Salary
$2.27


June 1, 2025 10:53 AM : The Red Sox placed Slaten on the 15-day injured list Sunday due to right shoulder inflammation.
Analysis: According to Chris Cotillo of MassLive.com, Slaten experienced some fatigue after his most recent appearance in Milwaukee on Wednesday, when he took the loss and a blown save after giving up two unearned runs in one-third of an inning. The right-hander will be eligible to be reinstated June 13, and he could be ready to rejoin the Red Sox at that point since his injury doesn't appear to be overly serious.

MLB Stats

Pitching

YearTeamGGSIP SV HLD K H BB HBP HR P/IP Pts
2024BOS44055.12135847924 6.92 383.07
2025BOS24023.1341614701 7.11 165.97

MILB Stats

Pitching

YearTeamGGSIP SV HLD K H BB HBP HR P/IP Pts
2019TEX (R)101.00010000 9.4 9.40
2019TEX (A-)101015.1002121702 3.6 55.27
2021TEX (A+)201982.1001109331417 3.32 273.37
2022TEX (CPX)101.00020000 11.4 11.40
2022TEX (AA)25550.20364494806 3.35 169.73
2023TEX (AA)35151.12876411609 6.01 308.57
2023TEX (AAA)508.101103401 6.43 53.57
2024BOS (AA)100.10111100 8.61 2.87

Recent Games

Last 10 MLB Games

DateTeamOpponentGSWinSaveHoldIPTBF RERHKBBHBPHR Pts
May 28, 2025 BOS @MIL 0 0 0 0 0.1 3 2 0 1 0 0 0 0 -0.13
May 27, 2025 BOS @MIL 0 0 0 1 1.1 5 0 0 0 1 1 0 0 12.87
May 24, 2025 BOS BAL 0 0 0 0 1.0 4 0 0 1 0 1 0 0 1.80
May 23, 2025 BOS BAL 0 0 0 1 0.2 3 0 0 1 1 0 0 0 8.33
May 20, 2025 BOS NYM 0 0 0 1 1.2 4 0 0 0 0 0 0 0 16.33
May 19, 2025 BOS NYM 0 0 0 1 1.1 4 0 0 0 1 0 0 0 15.87
May 14, 2025 BOS @DET 0 0 0 0 1.0 3 0 0 0 1 0 0 0 9.40
May 13, 2025 BOS @DET 0 0 0 0 1.0 3 0 0 0 3 0 0 0 13.40
May 9, 2025 BOS @KCR 0 0 0 0 1.1 4 0 0 0 0 0 0 0 9.87
May 8, 2025 BOS TEX 0 1 0 0 1.1 4 0 0 0 0 0 0 0 9.87
Totals 0 1 0 4 11.0 37 2 0 3 7 2 0 0 97.60

Last 10 MILB Games

DateLevelTeamOpponentGSWinSave IPTBFRERHKBBHBPHR
Aug 23, 2024 AA POR SOM 0 0 0 0.1 3 1 1 1 1 1 0 0
Sep 24, 2023 AAA RR @TAC 0 0 0 2.0 8 1 1 1 2 1 0 1
Sep 22, 2023 AAA RR @TAC 0 0 0 0.2 5 0 0 1 2 2 0 0
Sep 20, 2023 AAA RR @TAC 0 0 0 1.2 6 0 0 0 1 1 0 0
Sep 17, 2023 AAA RR LV 0 1 0 2.0 7 0 0 1 2 0 0 0
Sep 13, 2023 AAA RR LV 0 0 0 2.0 6 0 0 0 3 0 0 0
Sep 8, 2023 AA FRI NWA 0 0 0 2.0 7 0 0 0 4 1 0 0
Sep 4, 2023 AA FRI NWA 0 0 0 2.0 8 1 1 3 3 0 0 0
Aug 30, 2023 AA FRI CC 0 0 0 2.0 7 0 0 0 5 1 0 0
Aug 25, 2023 AA FRI @MID 0 1 0 2.0 7 0 0 0 1 2 0 0
Totals 0 2 0 16.2 64 3 3 7 24 9 0 1

Avg Salary & Roster%

Last 30 days

2026 Position Eligibility Progress

To gain eligibility, a player must have 5 GS or 10 G at a position in the majors, or 20 G at a position in the minors.

Transaction History

Date Transaction Type Team Salary
April 17, 2024 3:01 PM add Spin My Dreidel $3
July 2, 2024 9:24 PM cut Spin My Dreidel $2
February 27, 2025 9:23 PM add 88 mph 💨 $2
March 26, 2025 4:18 PM move Hot Pizza 🍕 (from 88 mph 💨) $2
June 2, 2025 8:19 AM cut Hot Pizza 🍕 $1

Recent Trades for Justin Slaten in FanGraphs Points

Date Proposing Team Proposing Team Gives Accepting Team Accepting Team Gives
April 30, 2025 9:24 AM Reset Justin Slaten BOS RP R $1 15IL 
 MillerTime Zebby Matthews MIN SP R $5 
April 15, 2025 10:26 AM West Richfield Street Turkeys Juan Brito CLE AAA 1B/2B/3B S $1
Justin Slaten BOS RP R $1 15IL 
 Murphy's Law Tommy Edman LAD 2B/SS/OF S $14 
$14 loan
April 4, 2025 9:43 AM Just the FIP Zack Wheeler PHI SP R $34 NA 
Juan Soto NYM OF L $61 
Wilyer Abreu BOS OF L $5 
Jonathan Aranda TBR 1B/2B L $6 
Justin Slaten BOS RP R $3 15IL 
Mason Miller ATH RP R $10 
$37 loan 		GF Chaunceys Salvador Perez KCR C/1B R $6
Ronald Acuña Jr. ATL OF R $36 
Grayson Rodriguez BAL SP R $15 60IL
CJ Abrams WSN SS L $7 
Dylan Crews WSN OF R $7 10IL 
JJ Wetherholt STL AA SS L $1
March 30, 2025 3:29 PM Cape Cod Coyotes Junior Caminero TBR 3B R $10 
 Juan Direction Alex Bregman BOS 3B R $28 10IL 
Justin Slaten BOS RP R $1 15IL 
March 29, 2025 1:23 PM 50 Shades of Sonny Gray Spencer Steer CIN 1B/OF R $8
$10 loan 		Madrigal Mystery Tour Justin Slaten BOS RP R $3 15IL 
March 25, 2025 4:17 PM Hot Pizza 🍕 Victor Scott II STL OF L $1 
 88 mph 💨 Justin Slaten BOS RP R $2 15IL 
March 15, 2025 8:28 PM 🐡 Salmón de Campusano 🐡 Justin Slaten BOS RP R $1 15IL 
Kumar Rocker TEX SP R $3 
Colt Emerson SEA A+ SS L $1
 AKA Big Papi Clay Holmes NYM SP/RP R $7 
Nick Yorke PIT AAA 2B/OF R $5
$8 loan
March 13, 2025 12:19 PM Paper Falls Everywhere 🗽 Tyler Soderstrom ATH C/1B/OF L $2 
Colson Montgomery CHW AAA SS L $1
Kumar Rocker TEX SP R $3 
 Troicinet MacKenzie Gore WSN SP L $8 
Justin Slaten BOS RP R $1 15IL 
$4 loan
February 27, 2025 6:37 PM The Pendletones Trevor Story BOS SS R $3 
Justin Slaten BOS RP R $5 15IL 
 Mallard Express 🦆🚂 Evan Phillips LAD RP R $3 60IL
Zack Gelof ATH 2B R $5 60IL
January 4, 2025 10:43 AM Contreras Tour (Naylor's Version) Zac Gallen ARI SP R $33 
Justin Slaten BOS RP R $5 15IL 
 🎻The Saggese Bottom Boyds🎙️ Randy Arozarena SEA OF R $21
Jac Caglianone KCR 1B L $5