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Justin Slaten
Projections & Stats

BOS

Player Information

TeamBOS PosRP Age28
ThrowsR $/Game-0.8 RCL R%0
Razzball 2026 rest of season projections for Justin Slaten of the Boston Red Sox have him as the #490 ranked player and #154 relief pitcher (RP) worth $-8.8 in standard 12 team 5x5 mixed leagues for fantasy baseball.

4/7/26 - Out (Oblique) Slaten is dealing with a right oblique strain and has been placed on the 15-day injured list.
Jump to: Season Stats || Monthly Stats || Game Log || Player Rater || 2026 Fantasy Outlook
Grey Albright's 2026 Player Summary

Justin Slaten Stats

GGSQSWLSVHLDIPTBFHERHRBBKERAFIPWHIPBABIPH/9K/9BB/9HR/9K%BB%$
Last 7 Days20000012.07100020.001.030.500.2004.59.00.00.028.60.0-1.5
Last 30 Days40001023.314200250.001.831.210.2865.513.65.50.035.714.3-4.6
Season40001023.314200250.001.951.200.2865.513.65.50.035.714.3-12.3
ROS Proj4700220946.61964119517463.663.781.230.2857.98.93.31.023.68.5-8.8

Justin Slaten 2026 Projections | Preseason

GGSQSWLSVHLDIPTBFHERKBBERAFIPWHIPK/9BB/9HR/9K%BB%$All Rank
Preseason (Grey)4354.0443.711.127.3-6.0457
Preseason (Steamer)65003301364.8272582962224.223.871.238.63.01.122.87.9-5.3418
Prospectonator

Justin Slaten Projections | Streamonator (Subscribe/login to see pitcher projections)

Justin Slaten daily MLB projections and fantasy value for probable starts in next 7-10 days. LU=Lineup. If the lineup has been released and incorporated into the projections, it is listed as "Live".

Justin Slaten Projections | DFS (Subscribe to see DFS MLB projections)

Justin Slaten daily fantasy baseball projections for DFS sites such as DraftKings and FanDuel. LU=Lineup. If the lineup has been released and incorporated into the projections, it is listed as "Live".

Justin Slaten Trade Value | Try our free Fantasy Baseball Trade Analyzer to evaluate trade offers.

Justin Slaten Game Log | Games Started

OPPDECIPBFPCHRERBBKERAFIPWHIPBABIPHRProj $Act $

Justin Slaten Game Log | Last 30 Day Relief Appearances

OPPDECIPStartIPBFPCHRERBBKHRERAFIPWHIP$
Apr 4SD71.04191000100.001.191.00-7.3
Apr 3SDHLD81.0390000100.001.180.00-7.0
Mar 28@CINL110.33111101100.000.006.00-99.9
Mar 26@CINHLD71.04170001200.002.631.000.2

Justin Slaten Stats | Season

Justin Slaten stats and 5x5 fantasy value from 2013-2026.
PeriodTeamGGSQSWLSVHLDBFIPHERHRBBKERAFIPWHIPBABIPHR/9BB/9K/9$
2013 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
2014 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
2015 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
2016 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
2017 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
2018 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
2019 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
2020 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
2021 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
2022 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
2023 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
2024BOS44006221322455.0471849582.932.611.010.2890.71.59.4-1.3
2025BOS3600243713734.02716310254.243.691.090.2420.82.66.6-9.4
2026BOS4000102143.0200250.001.951.200.2860.05.513.6-12.3

Justin Slaten Stats | Monthly

Justin Slaten 2026 fantasy value by month for 5x5 leagues.
GGSQSWLSVHLDIPHERKBBERAFIPWHIPBABIPH/9K/9BB/9HR/9$$/G$
April20000012.010200.001.030.500.2004.59.00.00.0-1.8-1.0

Justin Slaten Fantasy Baseball | Rest of Season Player Rater

$Point Shares$W$$SV$$ERA$$WHIP$$K$Pos RkTot Rk
MLB 10 ESPN-13.3-3.50.1-14.50.20.3-0.4149501
MLB 10 Y!-13.3-3.50.1-14.50.20.3-0.4149496
MLB 12 ESPN-8.8-4.00.1-10.00.20.3-0.4154490
MLB 12 Y!-8.8-4.00.1-10.00.20.3-0.4154480
MLB 14 ESPN-5.9-4.40.1-7.40.30.4-0.3141501
MLB 14 Y!-5.9-4.40.1-7.40.30.4-0.3141500
MLB 15 ESPN-5.1-4.60.1-6.50.30.4-0.4142526
MLB 15 Y!-5.1-4.60.1-6.50.30.4-0.4142525
MLB 16 ESPN-5.0-4.70.1-6.30.30.4-0.5148539
MLB 16 Y!-5.0-4.70.1-6.30.30.4-0.5148540
AL 10
NL 10
AL 12-5.2-3.90.0-6.30.00.2-0.172350
NL 12

Justin Slaten Fantasy Baseball | Rest of Season Player Rater (non-standard 5x5)

$Point Shares$W$$SV$$ERA$$WHIP$$K$$QS$$HLD$Pos RkTot Rk
6x6 (QS) ESPN 12-5.0-3.90.1-6.40.40.4-0.50.00.0146242
6x6 (QS) Y! 12-5.0-3.90.1-6.40.40.4-0.50.00.0146242
6x6 (Holds) ESPN 12-20.2-5.00.0-19.10.30.5-0.90.0-2.0160309
6x6 (Holds) Y! 12-20.2-5.00.0-19.10.30.5-0.90.0-2.0160309
7x7 ESPN 12-25.7-5.10.0-23.60.20.3-0.50.0-3.1163304
7x7 Y! 12-25.7-5.10.0-23.60.20.3-0.50.0-3.1163304

Justin Slaten Fantasy Baseball | Preseason Player Rater

$Point Shares$W$$SV$$ERA$$WHIP$$K$Pos RkTot Rk
MLB 10 ESPN-7.7-3.00.3-9.20.20.1-0.190409
MLB 10 Y!-1.0-1.40.4-2.60.10.2-0.185275
MLB 12 ESPN-5.3-3.20.3-6.90.20.2-0.191418
MLB 12 Y!-1.3-1.60.4-2.80.10.2-0.285305
MLB 14 ESPN-3.0-3.30.3-4.90.20.30.194426
MLB 14 Y!-1.3-1.90.4-2.70.10.2-0.384333
MLB 15 ESPN-2.5-3.40.3-4.40.20.40.091446
MLB 15 Y!-1.3-2.00.4-2.60.10.2-0.482350
MLB 16 ESPN-2.1-3.40.4-4.30.30.40.189466
MLB 16 Y!-1.3-2.00.4-2.80.10.3-0.380369
AL 10-6.5-2.60.0-7.70.00.10.152331
NL 10
AL 12-2.6-2.8-0.1-3.70.00.10.158334
NL 12

Justin Slaten Fantasy Baseball | Preseason Player Rater (non-standard 5x5)

$Point Shares$W$$SV$$ERA$$WHIP$$K$$QS$$HLD$Pos RkTot Rk
6x6 (QS) ESPN 12-2.6-3.20.5-4.60.30.3-0.10.082179
6x6 (Holds) ESPN 12-2.6-3.20.5-4.60.30.3-0.10.054179
7x7 ESPN 12-16.8-4.21.0-12.80.00.2-0.50.0-5.7114270

Justin Slaten 2026 Projections | Preseason

GGSQSWLSVHLDIPTBFHERKBBERAFIPWHIPK/9BB/9HR/9K%BB%$All Rank
Preseason (Grey)4354.0443.711.127.3-6.0457
Preseason (Steamer)65003301364.8272582962224.223.871.238.63.01.122.87.9-5.3418
Prospectonator

Justin Slaten Fantasy Outlook For 2026

Grey Albright Player Summary

Player data for Justin Slaten maintained by | Updated: