Select a bullpen:
Arizona Bullpen
Atlanta Bullpen
Chicago Bullpen
Cincinnati Bullpen
Colorado Bullpen
Los Angeles Bullpen
Miami Bullpen
Milwaukee Bullpen
New York Bullpen
Philadelphia Bullpen
Pittsburgh Bullpen
San Diego Bullpen
San Francisco Bullpen
St Louis Bullpen
Washington Bullpen
Baltimore Bullpen
Boston Bullpen
Chicago Bullpen
Cleveland Bullpen
Detroit Bullpen
Houston Bullpen
Kansas City Bullpen
Los Angeles Bullpen
Minnesota Bullpen
New York Bullpen
Athletics Bullpen
Seattle Bullpen
Tampa Bay Bullpen
Texas Bullpen
Toronto Bullpen

National League:
Arizona Bullpen
Atlanta Bullpen
Chicago Bullpen
Cincinnati Bullpen
Colorado Bullpen
Los Angeles Bullpen
Miami Bullpen
Milwaukee Bullpen
New York Bullpen
Philadelphia Bullpen
Pittsburgh Bullpen
San Diego Bullpen
San Francisco Bullpen
St Louis Bullpen
Washington Bullpen
American League:
Baltimore Bullpen
Boston Bullpen
Chicago Bullpen
Cleveland Bullpen
Detroit Bullpen
Houston Bullpen
Kansas City Bullpen
Los Angeles Bullpen
Minnesota Bullpen
New York Bullpen
Athletics Bullpen
Seattle Bullpen
Tampa Bay Bullpen
Texas Bullpen
Toronto Bullpen

Game Matchup Breakdown

Seattle Mariners
Seattle Mariners
@
September 18, 2025 1:10 PM ET
Kauffman Stadium
Kansas City Royals
Kansas City Royals

Seattle Bullpen Pitchers

ALL BULLPEN PITCHERS
Luke Jackson
Luke Jackson
Throws:
R
Effective Rtg:
72.6
Fatigue %:
-7.0
IP 2025:
47.1
ERA:
4.18
Outings:
49
FIP:
4.75
Pitch Arsenal:
SL FF CU
Player Profile
Gabe Speier
Gabe Speier
Throws:
L
Effective Rtg:
89.7
Fatigue %:
-3.0
IP 2025:
57.2
ERA:
2.65
Outings:
71
FIP:
2.27
Pitch Arsenal:
FF SI SL
Player Profile
Caleb Ferguson
Caleb Ferguson
Throws:
L
Effective Rtg:
78.2
Fatigue %:
-24.5
IP 2025:
61.1
ERA:
3.67
Outings:
66
FIP:
3.32
Pitch Arsenal:
FF FC SI SV
Player Profile
Eduard Bazardo
Eduard Bazardo
Throws:
R
Effective Rtg:
77.4
Fatigue %:
0.0
IP 2025:
73.1
ERA:
2.45
Outings:
67
FIP:
3.86
Pitch Arsenal:
SL SI FF
Player Profile
Andrés Muñoz
Andrés Muñoz
Throws:
R
Effective Rtg:
90.3
Fatigue %:
0.0
IP 2025:
57.1
ERA:
1.57
Outings:
59
FIP:
2.39
Pitch Arsenal:
SL FF SI
Player Profile
Matt Brash
Matt Brash
Throws:
R
Effective Rtg:
82.3
Fatigue %:
-14.2
IP 2025:
44.1
ERA:
2.64
Outings:
50
FIP:
3.12
Pitch Arsenal:
SL SI CH
Player Profile
Casey Legumina
Casey Legumina
Throws:
R
Effective Rtg:
77.2
Fatigue %:
0.0
IP 2025:
47.2
ERA:
5.66
Outings:
46
FIP:
4.46
Pitch Arsenal:
FF ST SI CH
Player Profile
Carlos Vargas
Carlos Vargas
Throws:
R
Effective Rtg:
77.0
Fatigue %:
-5.0
IP 2025:
71.1
ERA:
3.53
Outings:
66
FIP:
4.42
Pitch Arsenal:
SI SL FC
Player Profile
Emerson Hancock
Emerson Hancock
Throws:
R
Effective Rtg:
68.8
Fatigue %:
-4.3
IP 2025:
86.0
ERA:
5.13
Outings:
21
FIP:
5.34
Pitch Arsenal:
SI FF CH SL
Player Profile
SEA Starter
Luis Castillo
Projected SP: Luis Castillo
Throws: R
vs KC
Confirmed Lineup
1 - L - Mike Yastrzemski - RF
2 - R - Tyler Tolbert - 2B
3 - R - Bobby Witt Jr. - SS
4 - L - Vinnie Pasquantino - 1B
5 - R - Maikel Garcia - 3B
6 - R - Salvador Perez - C
7 - L - Adam Frazier - 2B
8 - L - Jac Caglianone - RF
9 - L - Carter Jensen - C

Projected SP: Stephen Kolek - throws: R
LIKELY TO PITCH

Seattle Bullpen Usage & Stats

Last 7 Days
Player IP NP-S ERA Sep-17 Sep-16 Sep-15 Sep-14 Sep-13 Sep-12 Sep-11
Luke Jackson 2.2 42-26 6.77
0.2
8
17-8
1.0
7
8-5
1.0
11
17-13
Gabe Speier 2.1 23-18 0.00
1.0
4-4
0.1
8
4-3
1.0
8
15-11
Caleb Ferguson 3.0 46-31 0.00
1.0
16-9
1.0
7
15-9
1.0
8
15-13
Eduard Bazardo 1.1 14-10 0.00
1.1
6
14-10
Andrés Muñoz 2.0 23-15 0.00
1.0
9
12-8
1.0
10
11-7
Matt Brash 2.2 72-43 16.92
0.2
30-17
1.0
9
19-12
1.0
8
23-14
Casey Legumina 1.0 15-9 0.00
1.0
9
15-9
Carlos Vargas 2.2 41-27 3.38
0.1
2-1
0.1
6
12-8
1.0
7
19-12
1.0
9
8-6
Emerson Hancock 2.2 43-26 0.00
1.0
9
12-7
1.2
7
31-19
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

Seattle Bullpen Matchup Analysis

Advanced Snapshot
Cumulative Fatigue & Effectiveness:
Effectiveness Rating:
79.3
Fatigue Factor:
-6.5
Current Overall Rating:
74.2
Bullpen Power Rankings
#14
#10
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.

Premium Member Services & Donations

About Our Site Privacy Policy Contact Us

Terms of Use DMCA Policy

SOCIAL

RECOMMENDED SITES
IndepthStats - LineupVault

Inside the Pen Inside t Pen™

©2022-2025 InsidethePen.com
All rights reserved

All MLB player headshots are licensed via Imagn/USA TODAY Sports.
All images remain the property of their copyright holders.

All team logos are the trademark & property of their respective owners and not InsidethePen.com. We present them here in an editorial context for informational and educational purposes.

`