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Team bullpen data and usage tracking

BOS
Boston
Team Record: 27 - 31
Head Coach: Alex Cora
Pitching Coach: Andrew Bailey
Bullpen Coach: Chris Holt
Basic Bullpen Snapshot
Bullpen Power Ranking:
#19
Pitchers on Roster:
13
Bullpen IP (prev 7 days):
17.0
Bullpen ERA (prev 7 days):
3.71

Bullpen Pitchers


ROLE PLAYERS

LH RELIEVERS
Justin Wilson
Throws:
L
Effective Rtg:
86.1
Fatigue %:
-11.7
IP 2025:
18.2
ERA:
2.41
Outings:
23
FIP:
2.37
Pitch Arsenal:
FF SL FC
Aroldis Chapman
Throws:
L
Effective Rtg:
85.0
Fatigue %:
-13.9
IP 2025:
22.0
ERA:
2.05
Outings:
24
FIP:
2.71
Pitch Arsenal:
FF SI SL FS
Brennan Bernardino
Throws:
L
Effective Rtg:
83.1
Fatigue %:
-2.0
IP 2025:
23.0
ERA:
1.57
Outings:
25
FIP:
3.33
Pitch Arsenal:
SI CU CH FC

RH RELIEVERS
Liam Hendriks
Throws:
R
Effective Rtg:
66.1
Fatigue %:
-9.1
IP 2025:
13.2
ERA:
6.59
Outings:
14
FIP:
4.97
Pitch Arsenal:
FF SL CU
Greg Weissert
Throws:
R
Effective Rtg:
75.8
Fatigue %:
0.0
IP 2025:
24.1
ERA:
2.96
Outings:
25
FIP:
3.60
Pitch Arsenal:
FF SI ST SL CH
Garrett Whitlock
Throws:
R
Effective Rtg:
80.1
Fatigue %:
0.0
IP 2025:
27.2
ERA:
3.90
Outings:
19
FIP:
3.07
Pitch Arsenal:
SI SL CH ST
Justin Slaten
Throws:
R
Effective Rtg:
82.4
Fatigue %:
-14.4
IP 2025:
23.1
ERA:
3.47
Outings:
24
FIP:
3.16
Pitch Arsenal:
FF FC CU ST

Bullpen Usage & Stats


Last 7 Days
Player IP NP-S ERA May-29 May-28 May-27 May-26 May-25 May-24 May-23
Justin Wilson 2.1 37-21 0.00
1.1
6
18-10
1.0
7
19-11
Liam Hendriks 2.1 45-28 11.59
0.1
10
16-9
1.0
7
18-12
1.0
6
11-7
Aroldis Chapman 3.0 45-32 3.00
1.0
18-13
1.0
9
19-12
1.0
9
8-7
Brennan Bernardino 2.0 36-23 4.50
0.1
6-3
1.0
4
12-10
0.2
8
18-10
Greg Weissert 3.1 55-35 2.70
1.1
5
26-15
1.0
6
15-10
1.0
10
14-10
Garrett Whitlock 1.1 28-15 6.77
1.1
7
28-15
Justin Slaten 2.2 56-35 0.00
0.1
16-11
1.1
7
20-12
1.0
8
20-12
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

Bullpen Advanced Snapshot


Current State
Cumulative Fatigue & Effectiveness:
Effectiveness Rating:
79.8
Fatigue Factor:
-7.3
Current Overall Rating:
73.9
Bullpen Power Rankings
Cumulative Advanced Stats
BULLPEN  STATS IP ERA AVG FIP xFIP WOBA K% BB% ASSESSMENT
Cumulative  2025 234.0 3.73 0.247 3.33 3.88 0.296 22.2% 8.3% [Above Avg]
BP  vs L 92.1 -- 0.228 3.24 - 0.277 21.7% 7.9% [Above Avg]
BP  vs R 140.2 -- 0.259 3.39 - 0.309 22.5% 8.6% [Average]
Closing Out Games
Saves / Save Opportunities:
12 / 26
Save Percentage:
46.2%
Holds:
21
Boston Pitchers w/ multiple save opportunities:
Aroldis Chapman:
34.6%
Justin Slaten:
19.2%
Garrett Whitlock:
15.4%
Justin Wilson:
11.5%
Greg Weissert:
7.7%
Other Relievers:
11.5%
Upcoming Matchups
Team Starting Pitchers

Lucas Giolito (R)
Walker Buehler (R)
Kutter Crawford (R)
Garrett Crochet (L)
Brayan Bello (R)
Richard Fitts (R)
Hunter Dobbins (R)

IR & MiLB Prospects