Boston Red Sox· #63· Pitcher
Justin Slaten
Bats R · Throws R·Age 28 (Sep 15, 1997)·6' 4", 222 lb·Longview, TX, USA
2026 Pitching
ERA
4.60
WHIP
1.37
IP
31.1
K%
28.5
BB%
5.8
K/9
11.20
W-L
2-4
GS
0
SV
0
HLD
17
DiamondIQ WAR
31.3 IP · 2026
0.7
6.5 runs above replacement
FIP · 3.01 (park 1.01)0.0
vs replacement · RP, 31.3 IP+6.5
FIP-based runs above replacement, park-adjusted, scaled by innings over runs-per-win. Reliever leverage is simplified (v1). Full methodology.
Pitch Arsenal · Statcast
Cutter42% · 93.6 · 19% whiff
Four-Seam25% · 96.6 · 21% whiff
Sweeper17% · 86.1 · 44% whiff
Sinker13% · 97.3 · 27% whiff
Curveball3% · 84.6 · 44% whiff
Career Pitching
| Yr | Tm | W | L | ERA | G | GS | SV | IP | SO | BB | WHIP | K/9 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026 | Boston Red Sox | 2 | 4 | 4.60 | 36 | 0 | 0 | 31.1 | 39 | 8 | 1.37 | 11.20 |
| 2025 | Boston Red Sox | 2 | 4 | 4.24 | 36 | 0 | 3 | 34.0 | 25 | 10 | 1.09 | 6.62 |
| 2024 | Boston Red Sox | 6 | 2 | 2.93 | 44 | 0 | 2 | 55.1 | 58 | 9 | 1.01 | 9.43 |
Recent Games
Aug 12 @ Toronto Blue JaysL
1.0 IP, 0 ER, 1 K, 1 BB
Aug 8 vs AthleticsL
0.2 IP, 1 ER, 0 K, 1 BB
Aug 6 vs Chicago White SoxW
1.0 IP, 1 ER, 2 K, 0 BB
Aug 2 @ Los Angeles DodgersW
0.1 IP, 0 ER, 0 K, 0 BB
Aug 1 @ Los Angeles DodgersW
1.0 IP, 0 ER, 1 K, 0 BB
Jul 29 @ AthleticsW
1.0 IP, 0 ER, 1 K, 0 BB
Jul 27 @ AthleticsW
0.2 IP, 0 ER, 0 K, 0 BB
Jul 26 vs Toronto Blue JaysW
1.0 IP, 0 ER, 1 K, 0 BB
Jul 22 vs Baltimore OriolesW
1.1 IP, 0 ER, 1 K, 0 BB
Jul 17 vs Tampa Bay RaysW
1.0 IP, 0 ER, 1 K, 0 BB