2024 Stats
W-L
6-2
ERA
2.93
WHIP
1.01
K
58
SV
2
2025 Projections
2025 Fantasy Outlook
Slaten, a 2019 draft pick by the Rangers, was selected by the Mets during the Rule 5 Draft last offseason. The 26-year-old was subsequently traded to Boston and impressed his new club during Grapefruit League play, flashing upper-90's velocity. Unsurprisingly, he made the Red Sox Opening Day roster and remained with the team all year. Slaten was an immediate fixture in Boston's high-leverage hierarchy, mixing four pitches effectively to a 2.93 ERA, 1.01 WHIP and 58:9 K:BB across 55.1 frames. The rookie right-hander recorded 10 or more strikeouts on all four of his offerings, including 18 apiece on his four-seamer and sweeper. Elbow inflammation cost Slaten a month-and-a-half last summer, but it's exciting to think about what he could offer in a full season. Red Sox manager Alex Cora said in the past that he envisions Slaten as a potential long-term closer option and he certainly has the talent to emerge out of a save share with Liam Hendriks and Aroldis Chapman in 2025. Read Past Outlooks
Notches second save
Slaten allowed one hit and zero walks in a scoreless ninth inning to pick up his second save of the season in Sunday's season finale against Tampa Bay.
ANALYSIS
Slaten allowed a bunt single to Dylan Carlson to lead off the ninth but otherwise had no trouble wrapping things up. With incumbent closer Kenley Jansen on the injured list, Slaten was able to notch his first save since March 31. The 27-year-old Slaten had an encouraging rookie season out of the Red Sox bullpen, pitching to a 2.93 ERA, 1.01 WHIP and 58:9 K:BB in 55.1 innings with six wins, 13 holds and two saves. The 37-year-old Jansen is set to become a free agent, so Slaten could find himself in the mix for saves next season.
Slaten allowed a bunt single to Dylan Carlson to lead off the ninth but otherwise had no trouble wrapping things up. With incumbent closer Kenley Jansen on the injured list, Slaten was able to notch his first save since March 31. The 27-year-old Slaten had an encouraging rookie season out of the Red Sox bullpen, pitching to a 2.93 ERA, 1.01 WHIP and 58:9 K:BB in 55.1 innings with six wins, 13 holds and two saves. The 37-year-old Jansen is set to become a free agent, so Slaten could find himself in the mix for saves next season.
Pitching Stats
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2024
Minor League Game Log
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Pitching Appearances Breakdown
Average Pitch Count
18
Last 10 Games
14
Last 5 Games
17
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+
What part of the game does Justin Slaten generally pitch?
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
-25%
BAA vs LHP
2024
-25%
BAA vs LHP
| BAA | K | BB | H | HR | ||||
|---|---|---|---|---|---|---|---|---|
| Since 2022vs Left | .188 | 31 | 8 | 18 | 2 | |||
| Since 2022vs Right | .252 | 27 | 1 | 29 | 2 | |||
| 2024vs Left | .188 | 31 | 8 | 18 | 2 | |||
| 2024vs Right | .252 | 27 | 1 | 29 | 2 | |||
| 2023vs Left | 0 | 0 | 0 | 0 | 0 | |||
| 2023vs Right | 0 | 0 | 0 | 0 | 0 | |||
| 2022vs Left | 0 | 0 | 0 | 0 | 0 | |||
| 2022vs Right | 0 | 0 | 0 | 0 | 0 | |||
| More Splits→ | View More Split Stats | |||||||
Home/Away Pitching Splits
Since 2022
-54%
ERA at Home
2024
-54%
ERA at Home
| ERA | WHIP | IP | K/9 | BB/9 | |||||
|---|---|---|---|---|---|---|---|---|---|
| Since 2022Home | 1.78 | 0.87 | 25.1 | 8.5 | 1.4 | ||||
| Since 2022Away | 3.90 | 1.13 | 30.0 | 10.2 | 1.5 | ||||
| 2024Home | 1.78 | 0.87 | 25.1 | 8.5 | 1.4 | ||||
| 2024Away | 3.90 | 1.13 | 30.0 | 10.2 | 1.5 | ||||
| 2023Home | 0 | 0 | 0 | 0 | 0 | ||||
| 2023Away | 0 | 0 | 0 | 0 | 0 | ||||
| 2022Home | 0 | 0 | 0 | 0 | 0 | ||||
| 2022Away | 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.
* 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
6.44K/9
9.4BB/9
1.5HR/9
0.7Fastball
96.5 mphERA
2.93WHIP
1.01BABIP
.305GB/FB
1.86Left On Base
69.4%Exit Velocity
81.7 mphBarrels/BBE
2.7%Spin Rate
2471 rpmBalls Hit 95+ MPH
22.6%Swinging Strike
14.7%Advanced Pitching Stats
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Defensive Stats
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Stats Vs Today's Lineup
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More Fantasy News
Candidate for saves
Red Sox manager Alex Cora said Sunday that he will "mix and match" at closer with Slaten and Chris Martin following the season-ending injury to Kenley Jansen (shoulder), Gabrielle Starr of the Boston Herald reports.
ANALYSIS
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Returns to mound Monday
Slaten struck out one over a scoreless inning in the second game of Monday's doubleheader against Toronto.
ANALYSIS
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Returns from IL
The Red Sox activated Slaten (elbow) from the 15-day injured list Monday, Jen McCaffrey of The Athletic reports.
ANALYSIS
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Throws bullpen Sunday
Slaten threw a bullpen session prior to Sunday's game against the Diamondbacks, Jen McCaffrey of The Athletic reports.
ANALYSIS
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Might need another outing
Boston manager Alex Cora was non-committal Saturday when asked if one rehab outing would be enough for Slaten (elbow) before returning from the 15-day injured list, MLB.com reports.
ANALYSIS
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