Justin Slaten

Justin Slaten

26-Year-Old PitcherRP
Boston Red Sox
2024 Fantasy Outlook
There was no outlook written for Justin Slaten in 2024. Check out the latest news below for more on his current fantasy value.
RANKSFrom Preseason
#600
ADP
$Signed a one-year contract with the Red Sox in March of 2024.
Earns third hold
PBoston Red Sox
April 15, 2024
Slaten earned his third hold of the season, allowing one run on two hits while striking out one over 2.2 innings in Sunday's 5-4 win over the Angels.
ANALYSIS
Setup reliever Chris Martin (non-throwing shoulder) was unavailable, so manager Alex Cora went with Slaten to shepherd a lead to the ninth inning. Slaten has worked in long relief -- five of six outings have involved at least one up-and-down. It's not clear how Cora would manage the setup duties should Martin miss significant time. Slaten, a Rule 5 selection, is inexperienced but has performed well over his first six MLB outings (0.87 ERA, one walk, 10.1 IP).
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Pitching Stats
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2024
2024 MLB Game Log
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Pitching Appearances Breakdown
Average Pitch Count
20
Last 10 Games
20
Last 5 Games
23
How many pitches does Justin Slaten generally throw?
 
1-10
 
11-20
 
21-30
 
31-40
 
41-50
 
51-60
 
61-70
 
71-80
 
81-90
 
91-100
 
101-110
 
111-120
 
121+
 
1-10
 
11-20
 
21-30
 
31-40
 
41-50
 
51-60
 
61-70
 
71-80
 
81-90
 
91-100
 
101-110
 
111-120
 
121+
 
1-10
 
11-20
 
21-30
 
31-40
 
41-50
 
51-60
 
61-70
 
71-80
 
81-90
 
91-100
 
101-110
 
111-120
 
121+
What part of the game does Justin Slaten generally pitch?
 
 
 
1st
 
 
 
2nd
 
 
 
3rd
 
 
 
4th
 
 
 
5th
 
 
 
6th
 
 
 
7th
 
 
 
8th
 
 
 
9th
 
Extra
 
 
 
1st
 
 
 
2nd
 
 
 
3rd
 
 
 
4th
 
 
 
5th
 
 
 
6th
 
 
 
7th
 
 
 
8th
 
 
 
9th
 
Extra
 
 
 
1st
 
 
 
2nd
 
 
 
3rd
 
 
 
4th
 
 
 
5th
 
 
 
6th
 
 
 
7th
 
 
 
8th
 
 
 
9th
 
Extra
% Games Reaching Innings Threshold
% Games By Number of Innings Pitched
Left/Right Pitching Splits
Since 2022
 
 
-100%
BAA vs LHP
2024
 
 
-100%
BAA vs LHP
2023
No Stats
2022
No Stats
BAA Batters K BB H 2B 3B HR
Since 2022vs Left .000 13 3 1 0 0 0 0
Since 2022vs Right .150 21 5 0 3 0 1 0
2024vs Left .000 13 3 1 0 0 0 0
2024vs Right .150 21 5 0 3 0 1 0
2023vs Left 0 0 0 0 0 0 0 0
2023vs Right 0 0 0 0 0 0 0 0
2022vs Left 0 0 0 0 0 0 0 0
2022vs Right 0 0 0 0 0 0 0 0
More Splits View More Split Stats
Home/Away Pitching Splits
Since 2022
 
 
-100%
ERA on Road
2024
 
 
-100%
ERA on Road
2023
No Stats
2022
No Stats
ERA WHIP IP W L SV K/9 BB/9 HR/9
Since 2022Home 1.93 0.64 4.2 0 0 0 3.9 1.9 0.0
Since 2022Away 0.00 0.18 5.2 0 0 1 9.5 0.0 0.0
2024Home 1.93 0.64 4.2 0 0 0 3.9 1.9 0.0
2024Away 0.00 0.18 5.2 0 0 1 9.5 0.0 0.0
2023Home 0 0 0 0 0 0 0 0 0
2023Away 0 0 0 0 0 0 0 0 0
2022Home 0 0 0 0 0 0 0 0 0
2022Away 0 0 0 0 0 0 0 0 0
More Splits View More Split Stats
Stat Review
How does Justin Slaten compare to other relievers?
This section compares his stats with all relief pitcher seasons from the previous three seasons (minimum 30 innings)*. The bar represents the player's percentile rank. For example, if the bar is halfway across, then the player falls into the 50th percentile for that stat and it would be considered average.

* Exit Velocity, Barrels/BBE %, Balls Hit 95+ MPH %, and Spin Rate are benchmarked against 2019 data (min 30 IP). See here for more exit velocity/barrels stats plus an explanation of current limitations with that data set.
  • K/BB
    Strikeout to walk ratio.
  • K/9
    Average strikeouts per nine innings.
  • BB/9
    Average walks per nine innings.
  • HR/9
    Average home runs allowed per nine innings.
  • Fastball
    Average fastball velocity.
  • ERA
    Earned run average. The average earned runs allowed per nine innings.
  • WHIP
    Walks plus hits per inning pitched.
  • BABIP
    Batting average on balls in play. Measures how many balls in play against a pitcher go for hits.
  • GB/FB
    Groundball to flyball ratio. The higher the number, the more likely a pitcher is to induce groundballs.
  • Left On Base
    The percentage of base runners that a pitcher strands on base over the course of a season.
  • Exit Velocity
    The speed of the baseball as it comes off the bat, immediately after a batter makes contact.
  • Barrels/BBE
    The percentage of batted ball events resulting in a Barrel. A Barrel is a batted ball with similar exit velocity and launch angle to past ones that led to a minimum .500 batting average and 1.500 slugging percentage.
  • Spin Rate
    Spin Rate is the rate of spin on a baseball after it is released. It is measured in revolutions per minute (rpm).
  • Balls Hit 95+ MPH
    The percentage of batted balls hit that met or exceeded the 95 MPH threshold.
  • Swinging Strike
    The percentage of pitches that result in a swing and a miss.
K/BB
8.00
 
K/9
7.0
 
BB/9
0.9
 
HR/9
0.0
 
Fastball
96.2 mph
 
ERA
0.87
 
WHIP
0.39
 
BABIP
.124
 
GB/FB
1.38
 
Left On Base
75.0%
 
Swinging Strike
14.1%
 
Advanced Pitching Stats
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Defensive Stats
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Stats Vs Today's Lineup
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Recent RotoWire Articles Featuring Justin Slaten See More
MLB Points Leagues: Exploiting the Relief Pitcher Market
Yesterday
Dan Marcus looks at non-closing relievers who can provide value in points leagues, including starters who qualify at RP like the Rays' Zack Littell.
AL FAAB Factor: Waiver Pickups of the Week
11 days ago
Erik Siegrist reviews the available talent in the American League as the baseball world waits to see what Ronel Blanco can do for an encore.
Farm Futures: Relief Pitching Prospect Rankings
55 days ago
James Anderson goes team-by-team to highlight which pitching prospects could ascend to the closer role in the coming years, including A's righty Mason Miller.
More Fantasy News
Fires two scoreless innings
PBoston Red Sox
April 12, 2024
Slaten allowed one walk and struck out one over two scoreless innings in Thursday's 9-4 extra-inning loss to Baltimore.
ANALYSIS
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Earns first save
PBoston Red Sox
March 31, 2024
Slaten struck out one batter over 2.1 perfect frames and earned a save over the Mariners on Sunday.
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Allows game-winning hit
PBoston Red Sox
March 30, 2024
Slaten gave up the game-winning single to Julio Rodriguez in the 10th inning of Saturday's loss to the Mariners.
ANALYSIS
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Makes roster
PBoston Red Sox
March 24, 2024
The Red Sox informed Slaten on Sunday that he's made the Opening Day roster, Rob Bradford of WEEI.com reports.
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Adds velo to bullpen
PBoston Red Sox
February 26, 2024
Slaten's fastball topped out at 97 miles per hour during a scoreless relief inning during Saturday's 4-3 exhibition loss to the Orioles, Julian McWilliams of The Boston Globe reports.
ANALYSIS
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