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National League:
Arizona Bullpen
Atlanta Bullpen
Chicago Bullpen
Cincinnati Bullpen
Colorado Bullpen
Los Angeles Bullpen
Miami Bullpen
Milwaukee Bullpen
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American League:
Baltimore Bullpen
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Game Matchup Breakdown

Seattle Mariners
Seattle Mariners
@
April 24, 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:
75.4
Fatigue %:
-16.9
IP 2025:
7.2
ERA:
4.70
Outings:
10
FIP:
3.28
Pitch Arsenal:
FF SL FC
Player Profile
Liam Hendriks
Liam Hendriks
Throws:
R
Effective Rtg:
57.2
Fatigue %:
-9.8
IP 2025:
2.0
ERA:
9.00
Outings:
2
FIP:
8.52
Pitch Arsenal:
FF SL CU
Player Profile
Aroldis Chapman
Aroldis Chapman
Throws:
L
Effective Rtg:
78.6
Fatigue %:
0.0
IP 2025:
9.1
ERA:
1.93
Outings:
11
FIP:
2.70
Pitch Arsenal:
FF SI SL FS
Player Profile
Brennan Bernardino
Brennan Bernardino
Throws:
L
Effective Rtg:
77.2
Fatigue %:
-16.8
IP 2025:
9.1
ERA:
1.93
Outings:
9
FIP:
3.88
Pitch Arsenal:
SI CH FC CU
Player Profile
Greg Weissert
Greg Weissert
Throws:
R
Effective Rtg:
75.0
Fatigue %:
0.0
IP 2025:
10.0
ERA:
4.50
Outings:
11
FIP:
3.32
Pitch Arsenal:
FF SI SL CH ST
Player Profile
Josh Winckowski
Josh Winckowski
Throws:
R
Effective Rtg:
73.9
Fatigue %:
-43.7
IP 2025:
11.2
ERA:
3.86
Outings:
6
FIP:
3.02
Pitch Arsenal:
FF FC SI CH SL
Player Profile
Garrett Whitlock
Garrett Whitlock
Throws:
R
Effective Rtg:
79.9
Fatigue %:
-12.7
IP 2025:
14.2
ERA:
1.84
Outings:
9
FIP:
1.66
Pitch Arsenal:
SI SL CH ST
Player Profile
Justin Slaten
Justin Slaten
Throws:
R
Effective Rtg:
80.3
Fatigue %:
0.0
IP 2025:
9.0
ERA:
4.00
Outings:
10
FIP:
1.58
Pitch Arsenal:
FF FC CU ST
Player Profile
BOS Starter
Garrett Crochet
Projected SP: Garrett Crochet
Throws: L
vs SEA
Confirmed Lineup
1 - R - Dylan Moore - 3B
2 - R - Julio Rodru00edguez - CF
3 - S - Cal Raleigh - C
4 - R - Randy Arozarena - LF
5 - R - Mitch Garver - C
6 - R - Donovan Solano - 1B
7 - R - Ben Williamson - 3B
8 - S - Leo Rivas - 2B
9 - L - J.P. Crawford - SS

Projected SP: Bryan Woo - throws: R
LIKELY TO PITCH
Liam Hendriks
Liam Hendriks
Effective Rtg:
Eff Rtg:
57.2
Fatigue %:
-9.8
Player Profile
Aroldis Chapman
Aroldis Chapman
Effective Rtg:
Eff Rtg:
78.6
Fatigue %:
0.0
Player Profile
Greg Weissert
Greg Weissert
Effective Rtg:
Eff Rtg:
75.0
Fatigue %:
0.0
Player Profile
Garrett Whitlock
Garrett Whitlock
Effective Rtg:
Eff Rtg:
79.9
Fatigue %:
-12.7
Player Profile
Justin Slaten
Justin Slaten
Effective Rtg:
Eff Rtg:
80.3
Fatigue %:
0.0
Player Profile

Boston Bullpen Usage & Stats

Last 7 Days
Player IP NP-S ERA Apr-23 Apr-22 Apr-21 Apr-20 Apr-19 Apr-18 Apr-17
Justin Wilson 1.2 30-18 10.84
0.2
6
21-11
1.0
7
9-7
Liam Hendriks 2.0 31-20 9.00
1.0
9
7-5
1.0
8
24-15
Aroldis Chapman 2.0 28-21 4.50
1.0
8
16-12
1.0
9
12-9
Brennan Bernardino 3.0 51-29 0.00
1.0
28-15
1.0
9
16-10
1.0
7
7-4
Chris Murphy 0 0-0
Greg Weissert 1.1 32-16 20.30
0.1
6
10-3
1.0
7
22-13
Josh Winckowski 5.0 114-68 5.40
3.0
80-48
2.0
8
34-20
Garrett Whitlock 3.0 47-29 0.00
2.0
7
32-21
1.0
10
15-8
Zach Penrod 0 0-0
Justin Slaten 2.0 27-20 0.00
1.0
9
12-10
1.0
8
15-10
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:
74.7
Fatigue Factor:
-12.5
Current Overall Rating:
65.5
Bullpen Power Rankings
#24
#23
Expected Game Results
Bullpen Expected Results:
Bullpen Innings Expected:
2.2
Bullpen Runs Expected:
1.46
Blowout Potential:
[]
Starting Pitcher Expected Results:
Starter Innings Expected:
6.1
Starter Runs Expected:
2.04
Early Exit Risk:
[Low]
Bullpen Expected Results vs Team
GAME RESULTS EXPECTED AVG OPS FIP ERA xWOBA K% BB% ASSESSMENT
Expected  Overall 0.200 0.544 2.51 3.12 0.272 33.7% 7% [Very Strong]
Expected  vs L 0.134 0.372 - - - 27.3% 0% [Very Strong]
Expected  vs R 0.229 0.611 - - - 18% 1.7% [Strong]

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