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Justin Slaten
Projections & Stats

BOS

Player Information

TeamBOS PosRP Age27
ThrowsR $/Game-3.0 RCL R%0
Razzball 2025 preseason projections for Justin Slaten of the Boston Red Sox have him as the #440 ranked player and #132 relief pitcher (RP) worth $-4.1 in standard 12 team 5x5 mixed leagues for fantasy baseball.

Jump to: Season Stats || Monthly Stats || Game Log || Player Rater || 2025 Fantasy Outlook
Grey Albright's 2025 Player Summary

Justin Slaten Stats

GGSQSWLSVHLDIPTBFHERHRBBKERAFIPWHIPBABIPH/9K/9BB/9HR/9K%BB%$
Last 7 Days
Last 30 Days
Season44006221355.3228471849582.932.611.010.2817.69.41.50.725.43.9-1.3
Preseason (Steamer)65003301964.82725727724663.923.801.250.2897.99.23.31.024.38.8-4.1

Justin Slaten 2025 Projections | Preseason

GGSQSWLSVHLDIPTBFHERKBBERAFIPWHIPK/9BB/9HR/9K%BB%$All Rank
Preseason (Grey)5259.0642.811.039.8-2.0329
Preseason (Steamer)65003301964.8272572766243.923.801.259.23.31.024.38.8-4.1440
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$
Sep 29TBSV91.04161000000.003.171.0036.2
Sep 24@TOR61.05171000100.001.161.00-4.7
Sep 19@TB71.05131100200.00-0.831.002.9
Sep 18@TBW71.05252000200.00-0.832.0016.3
Sep 13@NYYHLD61.05152000200.00-0.832.00-11.0
Sep 12@NYY71.04151000100.001.171.00-4.7
Sep 11BALBSV81.0491110019.0016.181.00-32.8
Sep 8CHW81.03100000100.001.180.009.2
Sep 7CHWHLD81.03120000200.00-0.820.0016.7
Sep 4@NYM71.04111000000.003.191.00-12.2
Sep 3@NYM71.05162110019.0016.182.00-46.6
Aug 30@DETHLD80.7250000100.000.000.002.0
Aug 26TOR41.04140000100.001.170.009.2
Jul 7@NYYHLD81.04160001100.004.171.00-4.7
Jul 5@NYYW91.0360000100.001.160.0036.4
Jul 4@MIAHLD80.751902221025.710.002.99-81.9
Jun 30SD61.36232110106.921.661.50-24.5
Jun 23@CINHLD81.04170000100.004.140.009.2
Jun 19@TORHLD72.09242110304.500.151.007.9
Jun 18@TORHLD80.3120000000.000.000.00-15.5
Jun 15NYYW52.713472112313.338.011.5033.4
Jun 12PHIHLD81.04161000000.003.151.00-12.2
Jun 9@CHWBSV42.010331310314.506.650.5013.5
Jun 2DETBSV70.73101000100.000.001.49-19.0
May 31DET91.05202000100.001.122.00-18.5
May 28@BALHLD81.04181000100.001.131.00-4.7
May 26MILW81.03120000300.00-2.870.0051.4
May 20@TB82.06221000300.000.150.5030.1
May 18@STLL71.082655401036.001.145.00-99.9
May 16TB71.03160000300.00-2.890.0024.2
May 14TBBSV61.37233110206.920.132.26-27.4
May 11WSH70.73110001000.000.001.49-26.5
May 7@ATLL81.062222211018.004.143.00-73.5
May 4@MIN51.78293110105.291.931.80-18.9
Apr 30SF91.05172000100.001.162.00-18.5
Apr 27CHCW52.06250000200.001.140.0056.6
Apr 21@PITW62.08342001200.002.701.5039.9
Apr 18CLE72.07241000100.002.200.5017.5
Apr 14LAAHLD62.710342110103.333.620.753.0
Apr 11BALHLD62.06310001100.003.720.5017.5
Apr 6@LAA72.06260000500.00-1.800.0048.2
Apr 3@OAKHLD61.34100000000.003.370.008.6
Mar 31@SEASV72.37150000100.002.780.0070.8
Mar 30@SEA100.0151000000.000.00-23.3

Justin Slaten Stats | Season

Justin Slaten stats and 5x5 fantasy value from 2013-2025.
PeriodTeamGGSQSWLSVHLDBFIPHERHRBBKERAFIPWHIPBABIPHR/9BB/9K/9$
2013 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
2014 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
2015 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
2016 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
2017 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
2018 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
2019 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
2020 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
2021 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
2022 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
2023 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
2024BOS44006221322855.0471849582.932.611.010.2850.71.59.4-1.3
2025 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --

Justin Slaten Stats | Monthly

Justin Slaten 2025 fantasy value by month for 5x5 leagues.
GGSQSWLSVHLDIPHERKBBERAFIPWHIPBABIPH/9K/9BB/9HR/9$$/G$
April700200314.0511220.641.960.500.1563.27.71.30.012.611.5
May900120110.71581526.750.781.590.4849.912.71.70.0-10.1-10.3
June70010049.7731122.794.370.930.1796.510.21.91.9-0.90.0
July30010022.702336.744.151.120.0000.010.19.90.0-6.0-0.6
August20000011.700200.000.630.000.0000.010.80.00.0-9.40.1
September1000100210.01121101.803.431.100.3009.99.90.01.8-2.2-4.8

Justin Slaten Fantasy Baseball | Rest of Season Player Rater

$Point Shares$W$$SV$$ERA$$WHIP$$K$Pos RkTot Rk
MLB 10 ESPN0.00.00.117.60.45431072
MLB 10 Y!0.00.00.50.80.3190826
MLB 12 ESPN-4.1-3.20.3-5.80.20.00.2132438
MLB 12 Y!0.00.00.61.10.3145785
MLB 14 ESPN0.00.00.1-13.60.334620
MLB 14 Y!0.00.00.71.50.4129660
MLB 15 ESPN0.00.00.1-7.50.437632
MLB 15 Y!0.00.00.71.60.4132680
MLB 16 ESPN0.00.00.1-3.40.442647
MLB 16 Y!0.00.00.71.80.4127682
AL 10-0.16.80.01792
NL 10
AL 12-0.15.80.01792
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 120.219.30.70.00.011241
6x6 (QS) Y! 120.50.90.3-0.10.011241
6x6 (Holds) ESPN 120.4-1.40.70.0-3.011241
6x6 (Holds) Y! 120.40.80.30.00.211241
7x7 ESPN 120.2-2.30.40.02.011241
7x7 Y! 120.40.80.30.00.211241

Justin Slaten Fantasy Baseball | Preseason Player Rater

$Point Shares$W$$SV$$ERA$$WHIP$$K$Pos RkTot Rk
MLB 10 ESPN-7.3-3.10.4-8.30.1-0.4-0.1117410
MLB 10 Y!-0.7-1.40.4-2.30.2-0.10.1111306
MLB 12 ESPN-4.1-3.20.3-5.80.20.00.2132440
MLB 12 Y!-1.1-1.70.4-2.50.1-0.10.0109333
MLB 14 ESPN-2.5-3.30.3-4.40.20.10.3127449
MLB 14 Y!-1.3-1.90.4-2.50.1-0.30.0107364
MLB 15 ESPN-2.1-3.40.4-4.00.20.10.2127468
MLB 15 Y!-1.4-2.00.4-2.50.1-0.3-0.1107388
MLB 16 ESPN-1.9-3.50.3-4.00.30.20.3122482
MLB 16 Y!-1.6-2.20.4-2.70.1-0.3-0.1104408
AL 10-5.8-3.00.0-6.90.00.00.187391
NL 10
AL 12-2.4-3.1-0.1-3.40.00.00.1105403
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 12-1.9-3.20.5-3.90.30.00.20.0121206
6x6 (Holds) ESPN 12-1.9-3.20.5-3.90.30.00.20.047206
7x7 ESPN 12-23.0-2.80.3-46.4-0.1-0.4-0.20.022.8105267

Justin Slaten 2025 Projections | Preseason

GGSQSWLSVHLDIPTBFHERKBBERAFIPWHIPK/9BB/9HR/9K%BB%$All Rank
Preseason (Grey)5259.0642.811.039.8-2.0329
Preseason (Steamer)65003301964.8272572766243.923.801.259.23.31.024.38.8-4.1440
Prospectonator

Justin Slaten Fantasy Outlook For 2025

Grey Albright Player Summary

Player data for Justin Slaten maintained by | Updated: