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Pitcher Data and Usage Tracking

Zack Kelly
Zack Kelly
Throws: R
Primary Role(s): Reliever
Age: 30

Boston
Team Record: 89 - 73
Head Coach: Alex Cora
Pitching Coach: Andrew Bailey
Pitcher Snapshot
Pitcher Impact Rating:
79.5
IP (last 7 gm):
3.2
ERA (last 7 gm):
7.38
Team BP Power Rank:
#13

Pitcher Season Stats

Cumulative Stats
Season G ERA IP PA P/pa SO/pa BB/pa HR/pa SB/pa G/AO AVG OBP xWOBA OPS
2025 28 4.58 35.1 152 3.83 23.0% 7.9% 2.0% - 0.81 0.261 0.333 0.294 0.729
2025 SpringTr 7 2.35 7.2 27 3.74 29.6% 3.7% 0.0% - 1.33 0.154 0.185 - 0.377
2025: Home 13 4.96 16.1 75 3.80 17.3% 12.0% 0.0% - 0.74 0.279 0.397 - 0.741
2025: Away 15 4.26 19.0 77 3.86 28.6% 3.9% 3.9% - 0.89 0.247 0.273 - 0.711
2025: Vs L 23 - 14.0 61 4.21 26.2% 11.5% 4.9% - 0.6 0.231 0.344 - 0.825
2025: Vs R 23 - 14.1 68 3.88 23.5% 19.1% 0.0% - 0.93 0.208 0.368 - 0.632
2025 Pitch Arsenal
Game Logs
Game Date Opponent IP PA R H 2B 3B HR BB SO SB CS NP-S AVG
2025-09-28 (BOS) vs Tigers 1.0
8
 3 0 0 0 0 0 0 0 0 0 6-4 0.26
2025-09-26 (BOS) vs Tigers 1.0
7
 3 0 1 0 0 0 0 0 0 0 17-11 0.27
2025-09-25 (BOS) @ Blue Jays 0.2
6
 3 1 1 0 0 1 0 0 0 0 10-9 0.27
2025-09-21 (BOS) @ Rays 1.0
7
 5 2 2 0 0 0 0 1 0 0 20-13 0.26
2025-09-19 (BOS) @ Rays 1.0
8
 3 0 0 0 0 0 0 0 0 0 18-13 0.26
2025-09-17 (BOS) vs Athletics 0.2
10
 3 0 1 0 0 0 0 1 0 0 8-7 0.27
2025-09-16 (BOS) vs Athletics 1.0
9
 4 0 1 0 0 0 0 3 0 0 16-13 0.26
Advanced Stats
Advanced Stats will be released after the All-Star break

Bullpen Usage & Stats

Last 7 Days
Player IP NP-S ERA Oct-5 Oct-4 Oct-3 Oct-2 Oct-1 Sep-30 Sep-29
Zack Kelly 0.1 6-3 7.38
0.1
6
6-3
Justin Wilson 1.2 23-13 10.84
1.2
3
23-13
Aroldis Chapman 2.1 40-33 0.00
1.0
8
16-14
1.1
8
24-19
Steven Matz 2.0 37-22 3.86
1.0
6
13-9
1.0
5
24-13
José De León 0 0-0 4.05
Brennan Bernardino 0 0-0 0.00
Isaiah Campbell 0 0-0 40.91
Jovani Morán 0 0-0 6.75
Jordan Hicks 0 0-0 109.09
Dustin May 0 0-0 7.20
Chris Murphy 0 0-0 0.00
Greg Weissert 1.0 11-7 0.00
1.0
7
11-7
Garrett Whitlock 1.2 47-31 0.00
1.2
7
47-31
Kutter Crawford 0 0-0 9.00
Garrett Crochet 0 0-0 0.00
Cooper Criswell 0 0-0 1.29
Justin Slaten 2.0 29-18 0.00
1.1
4
11-8
0.2
5
18-10
Richard Fitts 0 0-0 6.75
Hunter Dobbins 0 0-0 5.59
Kyle Harrison 0 0-0 6.77
IP
In
NP-S
IP
In
NP-S
IP
In
NP-S
IP
In
NP-S
IP
In
NP-S
IP
In
NP-S
IP
In
NP-S
Advanced Pitcher Traits
Games Pitched this Season:
28
Games Started this Season:
0
Pitchers versus LH batters:
Yes
Pitchers versus RH batters:
Yes
Avg Inning when called:
6
Avg Run Diff when called:
2.83
Pitches over 30 pitches:
Yes
Pitches before the 8th:
Yes
Pitches back to back days:
Rarely
Other Boston Pitchers

Justin Wilson (L)
Aroldis Chapman (L)
Steven Matz (L)
José De León (R)
Brennan Bernardino (L)
Isaiah Campbell (R)
Jovani Morán (L)
Jordan Hicks (R)
Chris Murphy (L)
Greg Weissert (R)
Garrett Whitlock (R)
Zack Kelly (R)
Cooper Criswell (R)
Justin Slaten (R)
Richard Fitts (R)
Luis Perales (R)

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