lowest era by a relief pitcher ever with 50 innings

50 pitchers are tied for the lowest career ERA by a relief pitcher, with an ERA of 0.00. The first three are Austin Pope, Roki Sasaki and Hunter Barco.

NAMEERAGWLW%GSSOCGSHOSVIPHERRHRBBHBPGFIBBTBFWPK/9BB/9K/BBHR/9K%BB%WHIPBABIPRAH/9
1Austin Pope
A. Pope
0.00
1
0
0
0
1
0
0
0
2.0
2
0
0
0
1
0
0
0
9
0
4.50
4.50
1.00
0.00
11.1
11.1
1.50
.286
0.00
9.00
2Roki Sasaki
R. Sasaki
0.00
2
0
0
0
4
0
0
0
2.0
1
0
0
0
0
0
0
0
7
0
18.00
0.00
0.00
57.1
0.0
0.50
.333
0.00
4.50
3Hunter Barco
H. Barco
0.00
2
1
0
1.000
0
3
0
0
0
3.0
3
0
0
0
0
0
0
0
12
0
9.00
0.00
0.00
25.0
0.0
1.00
.333
0.00
9.00
4Dom Hamel
D. Hamel
0.00
1
0
0
0
0
0
0
0
1.0
3
0
0
0
0
1
0
0
6
0
0.00
0.00
0.00
0.0
0.0
3.00
.600
0.00
27.00
5Logan Davidson
L. Davidson
0.00
1
0
0
0
1
0
0
0
1.0
0
0
0
0
0
0
1
0
3
0
9.00
0.00
0.00
33.3
0.0
0.00
.000
0.00
0.00
6Nick Raquet
N. Raquet
0.00
2
0
0
0
1
0
0
0
2.0
0
0
0
0
1
0
0
0
7
0
4.50
4.50
1.00
0.00
14.3
14.3
0.50
.000
0.00
0.00
7Christian Roa
C. Roa
0.00
2
0
0
0
3
0
0
0
3.0
1
0
0
0
3
0
1
0
12
0
9.00
9.00
1.00
0.00
25.0
25.0
1.33
.167
0.00
3.00
8Ryan Fitzgerald
R. Fitzgerald
0.00
2
0
0
0
0
0
0
0
2.0
2
0
0
0
0
0
2
0
8
0
0.00
0.00
0.00
0.0
0.0
1.00
.250
0.00
9.00
9Niko Kavadas
N. Kavadas
0.00
1
0
0
0
1
0
0
0
1.2
3
0
0
0
1
0
1
0
9
0
5.40
5.40
1.00
0.00
11.1
11.1
2.40
.429
0.00
16.20
10Anthony Seigler
A. Seigler
0.00
1
0
0
0
0
0
0
0
1.0
1
0
0
0
0
0
1
0
4
0
0.00
0.00
0.00
0.0
0.0
1.00
.250
0.00
9.00
11Jared Triolo
J. Triolo
0.00
1
0
0
0
0
0
0
0
1.0
3
0
2
1
1
0
1
0
8
0
0.00
9.00
0.00
9.00
0.0
12.5
4.00
.333
18.00
27.00
12Doug Nikhazy
D. Nikhazy
0.00
1
0
0
0
2
0
0
0
1.0
0
0
0
0
0
0
1
0
3
0
18.00
0.00
0.00
66.7
0.0
0.00
.000
0.00
0.00
13Luis Vázquez
L. Vázquez
0.00
4
0
0
0
0
0
0
0
4.1
3
0
0
0
1
0
4
0
14
0
0.00
2.08
0.00
0.00
0.0
7.1
0.92
.231
0.00
6.23
14Chase Petty
C. Petty
0.00
1
0
1
.000
0
0
0
0
0
0.2
1
0
1
0
0
1
1
0
4
0
0.00
0.00
0.00
0.0
0.0
1.50
.333
13.50
13.50
15Jared Young
J. Young
0.00
1
0
0
0
0
0
0
0
0.1
1
0
0
0
1
0
1
0
3
0
0.00
27.00
0.00
0.00
0.0
33.3
6.00
.500
0.00
27.00
16Christian Montes De Oca
C. Montes De Oca
0.00
1
0
0
0
2
0
0
0
2.2
0
0
0
0
1
0
0
0
9
0
6.75
3.38
2.00
0.00
22.2
11.1
0.38
.000
0.00
0.00
17Logan Allen
L. Allen
0.00
1
1
0
1.000
0
2
0
0
0
1.0
0
0
0
0
0
0
0
0
3
0
18.00
0.00
0.00
66.7
0.0
0.00
.000
0.00
0.00
18César Salazar
C. Salazar
0.00
1
0
0
0
0
0
0
0
1.0
0
0
0
0
0
1
1
0
4
0
0.00
0.00
0.00
0.0
0.0
0.00
.000
0.00
0.00
19Willie MacIver
W. MacIver
0.00
2
0
0
0
0
0
0
0
2.0
4
0
0
0
0
0
2
0
10
0
0.00
0.00
0.00
0.0
0.0
2.00
.400
0.00
18.00
20Tomás Nido
T. Nido
0.00
1
0
0
0
0
0
0
0
1.2
0
0
0
0
0
1
1
0
6
0
0.00
0.00
0.00
0.0
0.0
0.00
.000
0.00
0.00
21Jacob Amaya
J. Amaya
0.00
1
0
0
0
0
0
0
0
1.0
0
0
0
0
0
0
1
0
3
0
0.00
0.00
0.00
0.0
0.0
0.00
.000
0.00
0.00
22Ryan Bergert
R. Bergert
0.00
4
1
0
1.000
0
2
0
0
0
4.0
1
0
0
0
0
1
2
0
14
0
4.50
0.00
0.00
14.3
0.0
0.25
.091
0.00
2.25
23Christian Koss
C. Koss
0.00
4
0
0
0
0
0
0
0
4.0
4
0
0
0
0
0
4
0
16
0
0.00
0.00
0.00
0.0
0.0
1.00
.250
0.00
9.00
24Ezequiel Duran
E. Duran
0.00
4
0
0
0
0
0
0
0
3.1
1
0
0
0
0
0
4
0
11
0
0.00
0.00
0.00
0.0
0.0
0.30
.091
0.00
2.70
25Spencer Arrighetti
S. Arrighetti
0.00
1
0
0
0
4
0
0
0
2.1
0
0
0
0
3
1
0
0
11
0
15.43
11.57
1.33
0.00
36.4
27.3
1.29
.000
0.00
0.00
StatMuse has game-level data for ERA going back to the 1901 season.
Some of the information used here was obtained free of charge from Retrosheet.

More Diamondbacks Stats

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HR

36

Suárez

Eugenio Suárez

RBI

100

Perdomo

Geraldo Perdomo

AVG

.292

Naylor

Josh Naylor
Team Pitching Leaders

W

13

Gallen

Zac Gallen

K

175

Gallen

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ERA

3.22

Kelly

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Team Rankings

HR

214

8th

R

791

6th

SO

1,288

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ERA

4.49

23rd

2025 Division Standings
TEAMWLPCTGB
93
69
.574
90
72
.556
3.0
81
81
.500
12.0
Diamondbacks Diamondbacks
80
82
.494
13.0
43
119
.265
50.0
Schedule
DATEMATCHUPTIME (ET)
Thu
3/26
@
4:10 PM
Fri
3/27
@
10:10 PM
Sat
3/28
@
9:10 PM
Mon
3/30
@
10:10 PM
Tue
3/31
@
9:40 PM
Last Game
AZ Diamondbacks

80 - 82

4

Final

12

SDP Padres

90 - 72

Sun 28 Sep 2025

MLB 2025 Batting Leaders

MLB 2025 Pitching Leaders

MLB Fantasy 2025

MLB 2025 Betting

MLB 2025 Standings

NL EastWLPCTGB
96
66
.593
83
79
.512
13.0
79
83
.488
17.0
76
86
.469
20.0
66
96
.407
30.0
NL CentralWLPCTGB
97
65
.599
Cubs Cubs - w
92
70
.568
5.0
Reds Reds - w
83
79
.512
14.0
78
84
.481
19.0
71
91
.438
26.0
NL WestWLPCTGB
93
69
.574
90
72
.556
3.0
81
81
.500
12.0
80
82
.494
13.0
43
119
.265
50.0
AL EastWLPCTGB
94
68
.580
94
68
.580
89
73
.549
5.0
77
85
.475
17.0
75
87
.463
19.0
AL CentralWLPCTGB
88
74
.543
87
75
.537
1.0
82
80
.506
6.0
70
92
.432
18.0
60
102
.370
28.0
AL WestWLPCTGB
90
72
.556
87
75
.537
3.0
81
81
.500
9.0
76
86
.469
14.0
72
90
.444
18.0

MLB 2025 Scores & Schedule

Scores

DATEMATCHUPSCORE
Tue
9/16
@
6-2
Tue
9/16
@
9-4
Tue
9/16
@
4-5
Tue
9/16
@
1-2
Tue
9/16
@
5-7

Schedule

DATEMATCHUPTIME (ET)
Wed
3/25
@
8:05 PM
Thu
3/26
@
4:00 AM
Thu
3/26
@
4:00 AM
Thu
3/26
@
2:10 PM
Thu
3/26
@
3:05 PM