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Game Matchup Breakdown

Pittsburgh Pirates
Pittsburgh Pirates
@
August 31, 2025 1:35 PM ET
Fenway Park
Boston Red Sox
Boston Red Sox

Boston Bullpen Pitchers

ALL BULLPEN PITCHERS
Justin Wilson
Justin Wilson
Throws:
L
Effective Rtg:
84.9
Fatigue %:
-15.0
IP 2025:
42.0
ERA:
2.57
Outings:
53
FIP:
2.79
Pitch Arsenal:
FF SL FC
Player Profile
Aroldis Chapman
Aroldis Chapman
Throws:
L
Effective Rtg:
92.7
Fatigue %:
-16.3
IP 2025:
54.0
ERA:
1.00
Outings:
59
FIP:
1.77
Pitch Arsenal:
FF SI SL FS
Player Profile
Steven Matz
Steven Matz
Throws:
L
Effective Rtg:
80.3
Fatigue %:
-11.1
IP 2025:
69.0
ERA:
3.00
Outings:
44
FIP:
3.19
Pitch Arsenal:
SI CU CH
Player Profile
Brennan Bernardino
Brennan Bernardino
Throws:
L
Effective Rtg:
78.0
Fatigue %:
-2.0
IP 2025:
48.2
ERA:
3.14
Outings:
52
FIP:
3.43
Pitch Arsenal:
SI CU CH FC
Player Profile
Jordan Hicks
Jordan Hicks
Throws:
R
Effective Rtg:
73.0
Fatigue %:
-2.0
IP 2025:
67.0
ERA:
6.45
Outings:
33
FIP:
4.18
Pitch Arsenal:
SI ST FF SL
Player Profile
Greg Weissert
Greg Weissert
Throws:
R
Effective Rtg:
77.7
Fatigue %:
-3.0
IP 2025:
57.2
ERA:
2.97
Outings:
63
FIP:
3.87
Pitch Arsenal:
FF SI SL ST CH
Player Profile
Garrett Whitlock
Garrett Whitlock
Throws:
R
Effective Rtg:
88.5
Fatigue %:
-6.8
IP 2025:
62.2
ERA:
2.59
Outings:
54
FIP:
2.47
Pitch Arsenal:
SI SL CH
Player Profile
Zack Kelly
Zack Kelly
Throws:
R
Effective Rtg:
78.4
Fatigue %:
0.0
IP 2025:
22.2
ERA:
5.56
Outings:
17
FIP:
3.65
Pitch Arsenal:
FC ST FF CH SI
Player Profile
Justin Slaten
Justin Slaten
Throws:
R
Effective Rtg:
82.0
Fatigue %:
-17.4
IP 2025:
25.1
ERA:
3.55
Outings:
26
FIP:
3.59
Pitch Arsenal:
FC FF CU ST
Player Profile
BOS Starter
Lucas Giolito
Projected SP: Lucas Giolito
Throws: R
vs PIT
Confirmed Lineup
1 - R - Jared Triolo - SS
2 - L - Spencer Horwitz - 1B
3 - R - Tommy Pham - LF
4 - R - Nick Gonzales - 2B
5 - R - Andrew McCutchen - RF
6 - L - Oneil Cruz - CF
7 - R - Henry Davis - C
8 - R - Alexander Canario - LF
9 - R - Cam Devanney - SS

Projected SP: Mitch Keller - throws: R
LIKELY TO PITCH

Boston Bullpen Usage & Stats

Last 7 Days
Player IP NP-S ERA Sep-1 Aug-31 Aug-30 Aug-29 Aug-28 Aug-27 Aug-26
Justin Wilson 3.0 31-25 0.00
1.0
6-6
0.2
8
7-6
0.1
7
1-1
1.0
9
17-12
Aroldis Chapman 3.0 45-32 0.00
1.0
5-5
1.0
9
16-10
1.0
9
24-17
Steven Matz 3.2 43-29 2.46
1.2
23-17
1.0
8
8-5
1.0
9
12-7
Brennan Bernardino 1.2 28-16 10.84
0.2
6
21-9
1.0
9
7-7
Jordan Hicks 2.1 41-26 7.73
1.0
9
15-9
0.1
8
11-8
1.0
7
15-9
Greg Weissert 3.0 34-24 3.00
0.1
2-2
1.0
7
13-10
0.2
6
11-7
1.0
8
8-5
Garrett Whitlock 2.0 43-29 0.00
1.0
8
23-15
1.0
8
20-14
Zack Kelly 0 0-0
Justin Slaten 2.0 46-27 4.50
1.0
7
23-15
1.0
7
23-12
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:
81.7
Fatigue Factor:
-8.2
Current Overall Rating:
74.8
Bullpen Power Rankings
#5
#5
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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