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Justin Slaten
RP · 
Boston Red Sox · #63
Bats/ThrowsR/R
Height6' 4"
Weight222 lbs
BirthplaceLongview, TX
MLB Debut2023
Draft2019: Rd 3, Pk 86 (TEX)
🪪Bio
Bats/ThrowsR/R
Height6' 4"
Weight222 lbs
BirthplaceLongview, TX
MLB Debut2023
CollegeNew Mexico
Draft2019: Rd 3, Pk 86 (TEX)
📊Season Stats (2026)
ERA4.60
W-L2-4
IP31.1
K39
WHIP1.37
SV0
Full Stat Line
G36
GS0
QS0
HLD17
H35
ER16
HR4
BB8
K/911.20
WAR-0.55
🤚Career Splits by Handedness
vs Left-Handed Batters
AVG.290
OBP.313
SLG.484
OPS.796
vs Right-Handed Batters
AVG.288
OBP.339
SLG.404
OPS.743
Career totals from real plate-appearance data — lower OPS allowed is better for a pitcher.
⚔️This Season vs. Each Opponent
| Opponent | ERA | IP | K | BB | Opp AVG |
|---|---|---|---|---|---|
vs. NYY
|
10.80 | 3.1 | 5 | 1 | .286 |
vs. TOR
|
0.00 | 3.0 | 3 | 1 | .200 |
vs. CHW
|
3.38 | 2.2 | 5 | 0 | .273 |
vs. TB
|
6.75 | 2.2 | 2 | 0 | .273 |
vs. OAK
|
3.86 | 2.1 | 1 | 1 | .200 |
vs. COL
|
9.00 | 2.0 | 1 | 0 | .556 |
vs. KC
|
0.00 | 2.0 | 4 | 0 | .000 |
vs. SD
|
0.00 | 2.0 | 2 | 0 | .143 |
vs. PHI
|
0.00 | 1.2 | 1 | 0 | .286 |
vs. BAL
|
0.00 | 1.1 | 1 | 0 | .200 |
vs. CIN
|
0.00 | 1.1 | 3 | 2 | .200 |
vs. CLE
|
0.00 | 1.1 | 2 | 1 | .200 |
vs. LAD
|
0.00 | 1.1 | 1 | 0 | .000 |
vs. LAA
|
9.00 | 1.0 | 1 | 0 | .400 |
vs. TEX
|
0.00 | 1.0 | 1 | 0 | .250 |
vs. MIN
|
54.00 | 0.2 | 1 | 1 | .667 |
vs. NYM
|
0.00 | 0.2 | 2 | 1 | .333 |
vs. WSH
|
13.50 | 0.2 | 2 | 0 | .500 |
vs. SEA
|
0.00 | 0.1 | 1 | 0 | .000 |
🏟️This Season at Each Ballpark
| Ballpark | ERA | IP | K | BB | Opp AVG |
|---|---|---|---|---|---|
| Total | 4.60 | 31.1 | 39 | 8 | .276 |
| Fenway Park | 4.30 | 14.2 | 17 | 2 | .295 |
| Coors Field | 9.00 | 2.0 | 1 | 0 | .556 |
| Kauffman Stadium | 0.00 | 2.0 | 4 | 0 | .000 |
| U.S. Cellular Field | 0.00 | 1.2 | 3 | 0 | .000 |
| Yankee Stadium | 21.60 | 1.2 | 2 | 1 | .375 |
| Dodger Stadium | 0.00 | 1.1 | 1 | 0 | .000 |
| Great American | 0.00 | 1.1 | 3 | 2 | .200 |
| Progressive Field | 0.00 | 1.1 | 2 | 1 | .200 |
| Angel Stadium | 9.00 | 1.0 | 1 | 0 | .400 |
| Rogers Centre | 0.00 | 1.0 | 1 | 1 | .000 |
| Citi Field | 0.00 | 0.2 | 2 | 1 | .333 |
| Tropicana Field | 27.00 | 0.2 | 0 | 0 | .600 |
| Safeco Field | 0.00 | 0.1 | 1 | 0 | .000 |
📅By Month & Recent Form
| Split | ERA | IP | K | BB | Opp AVG |
|---|---|---|---|---|---|
| Last 7 Days | 0.00 | 1.0 | 1 | 1 | .000 |
| Last 15 Days | 0.00 | 1.0 | 1 | 1 | .000 |
| Last 30 Days | 0.00 | 1.0 | 1 | 1 | .000 |
| March | 0.00 | 1.1 | 3 | 2 | .200 |
| April | 0.00 | 2.0 | 2 | 0 | .143 |
| May | 5.40 | 6.2 | 9 | 2 | .259 |
| June | 9.00 | 9.0 | 11 | 1 | .415 |
| July | 1.08 | 8.1 | 10 | 1 | .161 |
| August | 4.50 | 4.0 | 4 | 2 | .250 |
🎯Pitch Arsenal (2026)
| Type | Pitches | Usage% | Zone% | Chase% | Whiff% | BA | wOBA | xwOBA |
|---|---|---|---|---|---|---|---|---|
| Cutter | 209 | 41.1% | 51.7% | 25.9% | 21.2% | .386 | .502 | .367 |
| 4-Seam Fastball | 144 | 28.4% | 45.8% | 32.9% | 17.7% | .262 | .401 | .303 |
| Sweeper | 84 | 16.5% | 27.4% | 50.0% | 40.6% | .174 | .285 | .134 |
| Sinker | 54 | 10.6% | 57.4% | 29.6% | 33.3% | .167 | .192 | .241 |
| Curveball | 17 | 3.4% | 35.3% | 55.6% | 44.4% | .167 | .180 | .014 |
🌀Pitch Movement (2026)
| Type | # | Velo | Spin | IVB | H-Break | Ext |
|---|---|---|---|---|---|---|
| Cutter | 110 | 93.7 | 2,480 | +9.1" | -0.3" | 6.8 |
| 4-Seam Fastball | 80 | 96.6 | 2,459 | +16.3" | +0.1" | 6.8 |
| Sweeper | 42 | 86.0 | 2,613 | +1.8" | -1.1" | 6.8 |
| Sinker | 35 | 97.3 | 2,374 | +14.3" | +1.0" | 6.9 |
| Curveball | 12 | 84.6 | 2,698 | -13.8" | -0.6" | 6.8 |
IVB = induced vertical break (gravity removed) · H-Break = horizontal movement · Ext = release extension in feet.
📋Recent Game Log
| Date | Opp | Score | IP | H | ER | BB | K | ERA | PC | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|
| L | Wednesday, August 12, 2026 |
TOR
|
4-6 | 1.0 | 0 | 0 | 1 | 1 | 4.60 | 21 | — |
| L | Saturday, August 8, 2026 |
OAK
|
7-3 | 0.2 | 1 | 1 | 1 | 0 | 4.75 | 14 | — |
| W | Thursday, August 6, 2026 |
CHW
|
11-12 | 1.0 | 3 | 1 | 0 | 2 | 4.55 | 17 | — |
| W | Sunday, August 2, 2026 |
LAD
|
8-4 | 0.1 | 0 | 0 | 0 | 0 | 4.40 | 5 | — |
| W | Saturday, August 1, 2026 |
LAD
|
3-2 | 1.0 | 0 | 0 | 0 | 1 | 4.45 | 8 | W |
| W | Wednesday, July 29, 2026 |
OAK
|
4-2 | 1.0 | 1 | 0 | 0 | 1 | 4.61 | 19 | — |
| W | Monday, July 27, 2026 |
OAK
|
4-2 | 0.2 | 0 | 0 | 0 | 0 | 4.78 | 5 | — |
| W | Sunday, July 26, 2026 |
TOR
|
1-6 | 1.0 | 0 | 0 | 0 | 1 | 4.91 | 12 | — |
| W | Wednesday, July 22, 2026 |
BAL
|
3-6 | 1.1 | 1 | 0 | 0 | 1 | 5.11 | 19 | — |
| W | Friday, July 17, 2026 |
TB
|
3-5 | 1.0 | 0 | 0 | 0 | 1 | 5.40 | 12 | — |
👥Team — Boston Red Sox
| Player | Pos | Key Stat |
|---|---|---|
| Willson Contreras | 1B | .274 AVG |
| Isiah Kiner-Falefa | 2B | 0.00 ERA |
| Anthony Seigler | 2B | .250 AVG |
| Nick Sogard | 2B | .266 AVG |
| Caleb Durbin | 3B | .248 AVG |
| Adley Rutschman | C | .237 AVG |
| Connor Wong | C | .234 AVG |
| Ceddanne Rafaela | CF | .282 AVG |
| Eli White | CF | .246 AVG |
| Mickey Gasper | DH | .264 AVG |
| Romy Gonzalez | DH | .185 AVG |
| Jahmai Jones | DH | .218 AVG |
| Masataka Yoshida | DH | .274 AVG |
| Roman Anthony | LF | .236 AVG |
| Jarren Duran | LF | .207 AVG |
| Nate Eaton | LF | .139 AVG |
| Zack Kelly | Relief Pitcher | 3.31 ERA |
| Wilyer Abreu | RF | .256 AVG |
| Raymond Burgos | RP | 5.51 ERA |
| Aroldis Chapman | RP | 2.03 ERA |
| Danny Coulombe | RP | 4.50 ERA |
| Alec Gamboa | RP | 1.29 ERA |
| Tyron Guerrero | RP | 3.26 ERA |
| Seth Martinez | RP | 9.00 ERA |
| Erik Miller | RP | 2.15 ERA |
| Jovani Moran | RP | 3.41 ERA |
| Wyatt Olds | RP | 1.38 ERA |
| Jedixson Paez | RP | 18.90 ERA |
| Tyler Samaniego | RP | 2.66 ERA |
| Greg Weissert | RP | 3.64 ERA |
| Garrett Whitlock | RP | 1.88 ERA |
| Marcelo Mayer | Shortstop | .220 AVG |
| Brayan Bello | SP | 4.82 ERA |
| Jake Bennett | SP | 3.69 ERA |
| Sonny Gray | SP | 2.69 ERA |
| Eduardo Rivera | SP | 6.30 ERA |
| Patrick Sandoval | SP | 4.58 ERA |
| Ranger Suarez | SP | 3.44 ERA |
| Payton Tolle | SP | 3.15 ERA |
| Tsung-Che Cheng | SS | .256 AVG |
| Andruw Monasterio | SS | 67.50 ERA |
| Trevor Story | SS | .233 AVG |
| Garrett Crochet | Starting Pitcher | 6.30 ERA |
| Connelly Early | Starting Pitcher | 3.44 ERA |
See the Full Analysis
Key Suspects, player props, DFS rankings, and matchup intelligence for Justin Slaten and every MLB game — available in the BlowOutAlert workspace.