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Game Matchup Breakdown

Boston Red Sox
Boston Red Sox
@
September 7, 2025 1:10 PM ET
Chase Field
Arizona Diamondbacks
Arizona Diamondbacks

Boston Bullpen Pitchers

ALL BULLPEN PITCHERS
Justin Wilson
Justin Wilson
Throws:
L
Effective Rtg:
85.9
Fatigue %:
-12.3
IP 2025:
43.0
ERA:
2.51
Outings:
54
FIP:
2.66
Pitch Arsenal:
FF SL FC
Player Profile
Aroldis Chapman
Aroldis Chapman
Throws:
L
Effective Rtg:
92.7
Fatigue %:
0.0
IP 2025:
54.0
ERA:
1.00
Outings:
59
FIP:
1.78
Pitch Arsenal:
FF SI SL FS
Player Profile
Steven Matz
Steven Matz
Throws:
L
Effective Rtg:
80.2
Fatigue %:
0.0
IP 2025:
70.0
ERA:
3.09
Outings:
45
FIP:
3.20
Pitch Arsenal:
SI CU CH
Player Profile
Brennan Bernardino
Brennan Bernardino
Throws:
L
Effective Rtg:
78.1
Fatigue %:
-9.7
IP 2025:
51.2
ERA:
3.14
Outings:
55
FIP:
3.40
Pitch Arsenal:
SI CU CH FC
Player Profile
Chris Murphy
Chris Murphy
Throws:
L
Effective Rtg:
76.9
Fatigue %:
-18.7
IP 2025:
23.2
ERA:
3.04
Outings:
15
FIP:
5.37
Pitch Arsenal:
FF CU SL ST
Player Profile
Greg Weissert
Greg Weissert
Throws:
R
Effective Rtg:
77.5
Fatigue %:
-19.4
IP 2025:
59.1
ERA:
3.03
Outings:
65
FIP:
3.87
Pitch Arsenal:
FF SI SL CH ST
Player Profile
Garrett Whitlock
Garrett Whitlock
Throws:
R
Effective Rtg:
88.8
Fatigue %:
0.0
IP 2025:
63.2
ERA:
2.54
Outings:
55
FIP:
2.45
Pitch Arsenal:
SI SL CH
Player Profile
Zack Kelly
Zack Kelly
Throws:
R
Effective Rtg:
80.9
Fatigue %:
-9.4
IP 2025:
26.2
ERA:
4.73
Outings:
18
FIP:
3.28
Pitch Arsenal:
FC FF ST CH SI
Player Profile
Justin Slaten
Justin Slaten
Throws:
R
Effective Rtg:
80.0
Fatigue %:
-14.4
IP 2025:
27.1
ERA:
4.61
Outings:
28
FIP:
3.90
Pitch Arsenal:
FC FF CU ST
Player Profile
BOS Starter
Brayan Bello
Projected SP: Brayan Bello
Throws: R
vs AZ
Confirmed Lineup
1 - S - Geraldo Perdomo - SS
2 - S - Ketel Marte - 2B
3 - L - Corbin Carroll - RF
4 - R - Gabriel Moreno - C
5 - L - Jake McCarthy - CF
6 - R - Blaze Alexander - SS
7 - L - Alek Thomas - CF
8 - R - Tyler Locklear - 1B
9 - R - Jordan Lawlar - SS

Projected SP: Ryne Nelson - throws: R
LIKELY TO PITCH
Aroldis Chapman
Aroldis Chapman
Effective Rtg:
Eff Rtg:
92.7
Fatigue %:
0.0
Player Profile
Steven Matz
Steven Matz
Effective Rtg:
Eff Rtg:
80.2
Fatigue %:
0.0
Player Profile
Brennan Bernardino
Brennan Bernardino
Effective Rtg:
Eff Rtg:
78.1
Fatigue %:
-9.7
Player Profile
Garrett Whitlock
Garrett Whitlock
Effective Rtg:
Eff Rtg:
88.8
Fatigue %:
0.0
Player Profile
Zack Kelly
Zack Kelly
Effective Rtg:
Eff Rtg:
80.9
Fatigue %:
-9.4
Player Profile

Boston Bullpen Usage & Stats

Last 7 Days
Player IP NP-S ERA Sep-6 Sep-5 Sep-4 Sep-3 Sep-2 Sep-1 Aug-31
Justin Wilson 2.0 21-18 0.00
1.0
15-12
1.0
6
6-6
Aroldis Chapman 2.0 21-15 0.00
1.0
9
5-5
1.0
9
16-10
Steven Matz 2.2 37-27 6.77
1.0
2
14-10
1.2
7
23-17
Brennan Bernardino 3.0 46-31 3.00
1.1
18-12
0.2
1
17-11
1.0
9
11-8
Jordan Hicks 0.1 16-12 109.09
0.1
1
16-12
Chris Murphy 3.0 43-22 3.00
3.0
5
43-22
Greg Weissert 2.0 39-25 4.50
0.2
15-7
1.0
4
22-16
0.1
8
2-2
Garrett Whitlock 2.0 39-28 0.00
1.0
7
16-13
1.0
8
23-15
Zack Kelly 4.0 63-45 0.00
4.0
3
63-45
Justin Slaten 3.0 53-38 15.00
1.0
8
18-13
1.0
8
12-10
1.0
7
23-15
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

Boston Bullpen Matchup Analysis

Advanced Snapshot
Cumulative Fatigue & Effectiveness:
Effectiveness Rating:
82.3
Fatigue Factor:
-9.3
Current Overall Rating:
74.9
Bullpen Power Rankings
#18
#17
Expected Game Results
Bullpen Expected Results:
Bullpen Innings Expected:
4.0
Bullpen Runs Expected:
1.8
Blowout Potential:
[]
Starting Pitcher Expected Results:
Starter Innings Expected:
5
Starter Runs Expected:
2.7
Early Exit Risk:
[Moderate]
Bullpen Expected Results vs Team
GAME RESULTS EXPECTED AVG OPS FIP ERA xWOBA K% BB% ASSESSMENT
Expected  Overall 0.211 0.583 2.88 2.83 0.283 24.8% 7.9% [Very Strong]
Expected  vs L 0.208 0.598 - - - 25.3% 6.8% [Very Strong]
Expected  vs R 0.208 0.575 - - - 24.5% 10.2% [Strong]

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