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Zack Kelly
Relief Pitcher · 
Boston Red Sox · #76
Bats/ThrowsRight/Right
Height6' 3"
Weight231 lbs
BirthplaceRoanoke, VA
MLB Debut2022
🪪Bio
Age31
Bats/ThrowsRight/Right
Height6' 3"
Weight231 lbs
BirthplaceRoanoke, VA
MLB Debut2022
📊Season Stats (2026)
ERA3.31
W-L0-2
IP16.1
K14
WHIP1.29
SV0
Full Stat Line
G17
GS0
QS0
HLD3
H14
ER6
HR1
BB7
K/97.71
WAR0.03
🤚Career Splits by Handedness
vs Right-Handed Batters
AVG.240
OBP.367
SLG.240
OPS.607
Career totals from real plate-appearance data — lower OPS allowed is better for a pitcher.
⚔️This Season vs. Each Opponent
🏟️This Season at Each Ballpark
| Ballpark | ERA | IP | K | BB | Opp AVG |
|---|---|---|---|---|---|
| Total | 3.31 | 16.1 | 14 | 7 | .233 |
| Fenway Park | 2.53 | 10.2 | 8 | 3 | .231 |
| Busch Stadium II | 10.13 | 2.2 | 2 | 1 | .300 |
| Comerica Park | 0.00 | 1.0 | 2 | 2 | .000 |
| Rogers Centre | 0.00 | 1.0 | 2 | 1 | .250 |
| Kauffman Stadium | 0.00 | 0.2 | 0 | 0 | .333 |
| Camden Yards | 0.00 | 0.1 | 0 | 0 | .000 |
📅By Month & Recent Form
| Split | ERA | IP | K | BB | Opp AVG |
|---|---|---|---|---|---|
| Last 7 Days | 0.00 | 0.2 | 0 | 0 | .333 |
| Last 15 Days | 0.00 | 0.2 | 0 | 0 | .333 |
| Last 30 Days | 0.00 | 0.2 | 0 | 0 | .333 |
| April | 3.48 | 10.1 | 8 | 2 | .194 |
| May | 3.00 | 6.0 | 6 | 5 | .292 |
🎯Pitch Arsenal (2026)
| Type | Pitches | Usage% | Zone% | Chase% | Whiff% | BA | wOBA | xwOBA |
|---|---|---|---|---|---|---|---|---|
| Cutter | 124 | 43.8% | 12.9% | 28.6% | 7.1% | .259 | .320 | .363 |
| Sweeper | 62 | 21.9% | 8.1% | 20.0% | 20.0% | .188 | .300 | .315 |
| Sinker | 48 | 17.0% | 10.4% | 50.0% | 25.0% | .300 | .350 | .579 |
| 4-Seam Fastball | 39 | 13.8% | 15.4% | 28.6% | 0.0% | .125 | .900 | .080 |
| Changeup | 10 | 3.5% | 0.0% | — | — | — | — | — |
🌀Pitch Movement (2026)
| Type | # | Velo | Spin | IVB | H-Break | Ext |
|---|---|---|---|---|---|---|
| Cutter | 88 | 90.4 | 2,468 | +6.8" | -0.4" | 7.2 |
| Sweeper | 39 | 81.4 | 2,618 | +1.6" | -1.6" | 7.1 |
| 4-Seam Fastball | 26 | 95.9 | 2,178 | +14.9" | +0.6" | 7.0 |
| Sinker | 24 | 95.8 | 2,196 | +10.0" | +1.4" | 7.1 |
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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|
| W | Tuesday, May 19, 2026 |
KC
|
7-1 | 0.2 | 1 | 0 | 0 | 0 | 3.31 | 8 | — |
| L | Thursday, May 14, 2026 |
PHI
|
3-1 | 0.2 | 2 | 0 | 0 | 1 | 3.45 | 26 | — |
| L | Tuesday, May 12, 2026 |
PHI
|
2-1 | 1.0 | 0 | 0 | 0 | 1 | 3.60 | 11 | — |
| L | Sunday, May 10, 2026 |
TB
|
4-1 | 0.1 | 1 | 1 | 1 | 0 | 3.86 | 16 | — |
| W | Wednesday, May 6, 2026 |
DET
|
4-0 | 1.0 | 0 | 0 | 2 | 2 | 3.29 | 25 | — |
| L | Sunday, May 3, 2026 |
HOU
|
3-1 | 1.0 | 1 | 1 | 2 | 0 | 3.55 | 19 | L |
| W | Friday, May 1, 2026 |
HOU
|
1-3 | 1.1 | 2 | 0 | 0 | 2 | 3.09 | 19 | — |
| L | Tuesday, April 28, 2026 |
TOR
|
0-3 | 1.0 | 1 | 0 | 1 | 2 | 3.48 | 20 | — |
| W | Sunday, April 26, 2026 |
BAL
|
5-3 | 0.1 | 0 | 0 | 0 | 0 | 3.86 | 4 | — |
| L | Wednesday, April 22, 2026 |
NYY
|
4-1 | 1.0 | 0 | 0 | 0 | 2 | 4.00 | 11 | — |
👥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 |
| 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 |
| Justin Slaten | RP | 4.60 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 Zack Kelly and every MLB game — available in the BlowOutAlert workspace.