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National League:
Arizona Bullpen
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Game Matchup Breakdown

Kansas City Royals
Kansas City Royals
@
August 6, 2025 7:10 PM ET
Fenway Park
Boston Red Sox
Boston Red Sox

Boston Bullpen Pitchers

ALL BULLPEN PITCHERS
Justin Wilson
Justin Wilson
Throws:
L
Effective Rtg:
84.7
Fatigue %:
-7.0
IP 2025:
35.0
ERA:
2.83
Outings:
43
FIP:
2.87
Pitch Arsenal:
FF SL FC
Player Profile
Aroldis Chapman
Aroldis Chapman
Throws:
L
Effective Rtg:
90.9
Fatigue %:
-12.0
IP 2025:
44.2
ERA:
1.21
Outings:
49
FIP:
1.94
Pitch Arsenal:
FF SI SL FS
Player Profile
Steven Matz
Steven Matz
Throws:
L
Effective Rtg:
79.9
Fatigue %:
-2.0
IP 2025:
57.0
ERA:
3.32
Outings:
34
FIP:
2.92
Pitch Arsenal:
SI CU CH
Player Profile
Jorge Alcala
Jorge Alcala
Throws:
R
Effective Rtg:
68.6
Fatigue %:
-12.8
IP 2025:
40.2
ERA:
6.64
Outings:
41
FIP:
5.49
Pitch Arsenal:
FF CU SL SI
Player Profile
Isaiah Campbell
Isaiah Campbell
Throws:
R
Effective Rtg:
72.0
Fatigue %:
-12.2
IP 2025:
4.0
ERA:
6.75
Outings:
2
FIP:
6.10
Pitch Arsenal:
SL FF ST SI CU
Player Profile
Jordan Hicks
Jordan Hicks
Throws:
R
Effective Rtg:
74.6
Fatigue %:
-28.2
IP 2025:
59.0
ERA:
6.41
Outings:
25
FIP:
3.88
Pitch Arsenal:
SI ST FF SL
Player Profile
Chris Murphy
Chris Murphy
Throws:
L
Effective Rtg:
81.6
Fatigue %:
-19.9
IP 2025:
20.0
ERA:
2.25
Outings:
12
FIP:
4.75
Pitch Arsenal:
FF CU SL ST
Player Profile
Greg Weissert
Greg Weissert
Throws:
R
Effective Rtg:
76.9
Fatigue %:
-2.0
IP 2025:
48.0
ERA:
2.81
Outings:
52
FIP:
4.08
Pitch Arsenal:
FF SI SL ST CH
Player Profile
Garrett Whitlock
Garrett Whitlock
Throws:
R
Effective Rtg:
86.6
Fatigue %:
-2.0
IP 2025:
52.2
ERA:
2.91
Outings:
43
FIP:
2.45
Pitch Arsenal:
SI SL CH
Player Profile
BOS Starter
Dustin May
Projected SP: Dustin May
Throws: R
vs KC
Confirmed Lineup
1 - L - Mike Yastrzemski - RF
2 - R - Bobby Witt Jr. - SS
3 - L - Vinnie Pasquantino - 1B
4 - R - Maikel Garcia - 3B
5 - R - Salvador Perez - C
6 - L - Adam Frazier - 2B
7 - R - Jonathan India - 2B
8 - L - John Rave - RF
9 - L - Kyle Isbel - CF

Projected SP: Michael Wacha - throws: R
LIKELY TO PITCH

Boston Bullpen Usage & Stats

Last 7 Days
Player IP NP-S ERA Aug-6 Aug-5 Aug-4 Aug-3 Aug-2 Aug-1 Jul-31
Justin Wilson 1.0 20-15 9.00
0.1
8
10-8
0.2
5
10-7
Aroldis Chapman 2.2 34-26 0.00
1.0
9
13-9
0.2
9
12-10
1.0
9
9-7
Steven Matz 2.0 28-17 0.00
1.0
7
17-10
1.0
6
11-7
Jorge Alcala 0.2 35-18 40.91
0.1
8
24-14
0.1
9
11-4
Isaiah Campbell 2.0 30-21 4.50
2.0
30-21
Jordan Hicks 3.0 61-40 9.00
1.0
21-13
1.0
9
17-12
1.0
8
23-15
Chris Murphy 3.1 39-23 0.00
2.1
29-16
1.0
9
10-7
Greg Weissert 2.0 29-19 0.00
1.0
8
17-11
1.0
10
12-8
Garrett Whitlock 2.1 37-28 0.00
0.1
8
9-5
1.0
7
16-13
1.0
8
12-10
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:
80.9
Fatigue Factor:
-10.7
Current Overall Rating:
72.4
Bullpen Power Rankings
#8
#3
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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