Justin Slaten (RP) - Boston Red Sox MLB Stats 2026

Updated Oct 28, 2026 10:52 PM ET

Justin Slaten

· RP · MLB · 4,132 views

28 yrs · 6' 4" · 222 lbs · New Mexico · 2019: Rd 3, Pk 86 (TEX) · Bats: Right / Throws: Right · Debut: 2023

FPPG (DK, 2026)

2.6

ERA

4.60

W-L

2-4

31.1

60-Day-IL Right - Elbow - Inflammation

The Red Sox transferred Slaten (elbow) from the 15-day injured list to the 60-day IL on Tuesday, Gabrielle Starr of the Boston Herald reports. Expected return: Jan 31, 2027

2026 Season Stats (weighted with prior seasons for projection accuracy) | Park: Fenway Park

Justin carries a 4.6 ERA over 31.1 innings pitched with a 2-4 record in 2026. He has struck out 39 batters and walked 8 and averaging 11.2 strikeouts per nine innings. His WHIP stands at 1.37, allowing 35 hits and 4 home runs. Justin has recorded 17 holds.

Pitching Splits Pitching performance splits against left-handed and right-handed batters. 2026 Season - 137 TBF

Split	K%	K/9	BB%	wOBA	xFIP	HH%
vs LHB	32.4%	12.2	2.8%	0.329	2.22	36.7%
vs RHB	24.2%	10.1	9.1%	0.407	3.54	36.7%
Overall	28.5%	11.2	5.8%	0.367	2.82	36.7%

Pitching Splits — K% & BB% (2026) Strikeout and walk rates against left-handed batters, right-handed batters, and overall.

Pitching Splits — wOBA (2026) Weighted on-base average allowed against left-handed batters, right-handed batters, and overall. Lower is better for pitchers.

Pitching Splits — HH% (2026) Hard-hit rate allowed against left-handed batters, right-handed batters, and overall. Lower is better for pitchers.

Season Context Key season-level pitching metrics including games played, SIERA, and batted ball data. 2026 Season - 137 TBF

SIERA

3.16

P/IP

16.3

TBF

137

HH%

36.7%

Barrel%

4.4%

CSW%

28.3%

CSW Prev

26.7%

GB%

54.6%

FB%

45.5%

Bullpen

3.98

RSB

-1.40

Batted Ball Profile (2026) Ground ball vs fly ball tendency — higher GB% generally means fewer home runs allowed.

Current Season (2026 Season - 36 GP) Raw current-season pitching stats from the MLB API.

Last 15 games

HLD

—

WAR

0.6

Traditional Stats Standard pitching stats: ERA, FIP, W/L, saves, holds, innings, and games started. 2026 Season

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Justin Slaten MLB Stats 2026

Justin Slaten is a RP for the Boston Red Sox. For the 2026 season, Justin has a 28.5% strikeout rate, a 2.82 xFIP, a 4.60 ERA, 31.1 innings pitched. View Justin's current season stats, recent performance trends, and key statistical categories to evaluate fantasy value and make informed DFS lineup decisions.

Stats updated November 4, 2026.