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Justin Slaten BOS RP R 60IL 

Born: 09/15/1997 Age: 27

FanGraphs Player Page

2025 OPL OPL Player Page

On MLB 40-man: NO
Acquired: Trade (NYM) Dec'23

Tue 8/05 Wed 8/06 Thu 8/07
KCR 0-0 3• KCR 7:10 PM EDT ---

Positions
RP
2026 Earned Positions
RP

All Leagues
Average $2.39 Median $2.00
Ottoneu Classic (4x4)
Average $1.83 Median $1.00

All Leagues
Average $2.00 Median $2.00
Ottoneu Classic (4x4)
Average $1.30 Median $1.00

Roster%
51.68%
Change
7Day 1.84%
30Day 0.61%

2025 OPL 2025 OPL Round 5
OPL Roster%
0.00%
OPL Average Salary
$0.00


August 5, 2025 3:59 PM : Slaten (shoulder) threw off the mound at Fenway Park on Tuesday, Rob Bradford of WEEI.com reports.
Analysis: Slaten looked to be throwing at full effort in his first time tossing from the bump since he landed on the injured list in early June with right shoulder inflammation. The righty will surely require some rehab appearances before being activated, and it's not clear when he might be ready for those, but he's trending in a positive direction.

MLB Stats

Pitching

YearTeamGGSIP K HR9 ERA WHIP
2024BOS44055.1580.650602.927711.01205
2025BOS24023.1160.385713.471430.90000

MILB Stats

Pitching

YearTeamGGSIP K HR9 ERA WHIP
2019TEX (R)101.010.000000.000000.00000
2019TEX (A-)101015.1211.173916.456521.82609
2021TEX (A+)201982.11101.858306.012151.50607
2022TEX (CPX)101.020.000000.000000.00000
2022TEX (AA)25550.2641.065796.927631.91447
2023TEX (AA)35151.1761.577923.155841.11039
2023TEX (AAA)508.1101.080001.080000.84000
2024BOS (AA)100.110.0000027.000276.00006

Recent Games

Last 10 MLB Games

DateTeamOpponentGSWinSaveHoldIPTBF RERHKBBHBPHR
May 28, 2025 BOS @MIL 0 0 0 0 0.1 3 2 0 1 0 0 0 0
May 27, 2025 BOS @MIL 0 0 0 1 1.1 5 0 0 0 1 1 0 0
May 24, 2025 BOS BAL 0 0 0 0 1.0 4 0 0 1 0 1 0 0
May 23, 2025 BOS BAL 0 0 0 1 0.2 3 0 0 1 1 0 0 0
May 20, 2025 BOS NYM 0 0 0 1 1.2 4 0 0 0 0 0 0 0
May 19, 2025 BOS NYM 0 0 0 1 1.1 4 0 0 0 1 0 0 0
May 14, 2025 BOS @DET 0 0 0 0 1.0 3 0 0 0 1 0 0 0
May 13, 2025 BOS @DET 0 0 0 0 1.0 3 0 0 0 3 0 0 0
May 9, 2025 BOS @KCR 0 0 0 0 1.1 4 0 0 0 0 0 0 0
May 8, 2025 BOS TEX 0 1 0 0 1.1 4 0 0 0 0 0 0 0
Totals 0 1 0 4 11.0 37 2 0 3 7 2 0 0

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 23, 2024 12:10 PM add Kickin' Djibouti $1
July 18, 2024 8:50 AM cut Kickin' Djibouti $1
February 21, 2025 9:41 PM add Rivershade $1
June 1, 2025 11:01 AM cut Rivershade $1

Recent Trades for Justin Slaten in Ottoneu Classic (4x4)

Date Proposing Team Proposing Team Gives Accepting Team Accepting Team Gives
July 4, 2025 7:51 AM Garbage Inn Chris Sale ATL SP L $20 60IL 
Gerrit Cole NYY SP R $6 60IL
Austin Riley ATL 3B R $36 10IL 
Will Warren NYY SP R $1 
Jacob Wilson ATH SS R $3 10IL 
 All Proofs Martin Perez CHW SP L $1 60IL 
Grant Holmes ATL SP/RP R $3 60IL 
Juan Soto NYM OF L $68 
Keegan Akin BAL RP L $3 
Justin Slaten BOS RP R $3 60IL 
January 22, 2025 6:52 PM Rampaging Fluffaloes Justin Slaten BOS RP R $4 60IL 
Jared Jones PIT SP R $4 60IL
Max Clark DET AA OF L $2
 Sandlot Prophets Jordan Westburg BAL 2B/3B R $7