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Game Matchup Breakdown

Boston Red Sox
Boston Red Sox
@
September 6, 2025 5:10 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
Lucas Giolito
Projected SP: Lucas Giolito
Throws: R
vs AZ
Confirmed Lineup
1 - S - Geraldo Perdomo - SS
2 - S - Ketel Marte - 2B
3 - L - Corbin Carroll - RF
4 - R - Blaze Alexander - SS
5 - L - Adrian Del Castillo - C
6 - R - James McCann - C
7 - L - Alek Thomas - CF
8 - R - Tyler Locklear - 1B
9 - L - Jake McCarthy - CF

Projected SP: Brandon Pfaadt - throws: R
LIKELY TO PITCH

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

Published Game Day

Advanced bullpen stats are generally published once starting pitchers and game odds are available. They are finalized after starting lineups for both teams are confirmed.

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