lowest era amongst lefty relievers mlb this season

12 pitchers are tied for the lowest ERA by a left-handed relief pitcher this season, with an ERA of 0.00. The first three are Josh Hader, Robby Ahlstrom and Cam Booser.

NAMEERASEASONTMGWLW%GSSOCGSHOSVIPHERRHRBBHBPGFIBBTBFWPK/9BB/9K/BBHR/9K%BB%WHIPBABIPRAH/9
1Josh Hader
J. Hader
0.00
2026
1
0
0
0
1
0
0
1
1.0
0
0
0
0
1
0
1
0
4
0
9.00
9.00
1.00
0.00
25.0
25.0
1.00
.000
0.00
0.00
2Robby Ahlstrom
R. Ahlstrom
0.00
2026
1
0
0
0
2
0
0
0
1.1
0
0
0
0
0
0
0
0
4
0
13.50
0.00
0.00
50.0
0.0
0.00
.000
0.00
0.00
3Cam Booser
C. Booser
0.00
2026
1
0
0
0
1
0
0
0
2.0
1
0
0
0
0
0
0
0
7
0
4.50
0.00
0.00
14.3
0.0
0.50
.167
0.00
4.50
4Drew Sommers
D. Sommers
0.00
2026
2
0
0
0
1
0
0
0
1.0
0
0
0
0
1
0
0
0
4
0
9.00
9.00
1.00
0.00
25.0
25.0
1.00
.000
0.00
0.00
5Caleb Ferguson
C. Ferguson
0.00
2026
4
0
0
0
7
0
0
0
6.1
3
0
0
0
0
0
1
0
23
0
9.95
0.00
0.00
30.4
0.0
0.47
.188
0.00
4.26
6A.J. Minter
A.J. Minter
0.00
2026
4
0
1
.000
0
6
0
0
0
3.1
3
0
1
0
1
0
3
0
13
0
16.20
2.70
6.00
0.00
46.2
7.7
1.20
.500
2.70
8.10
7Logan Allen
L. Allen
0.00
2026
1
0
0
0
7
0
0
0
4.0
5
0
2
0
1
0
1
0
19
0
15.75
2.25
7.00
0.00
36.8
5.3
1.50
.455
4.50
11.25
8Welinton Herrera
W. Herrera
0.00
2026
3
0
0
0
2
0
0
0
2.1
2
0
0
0
1
0
1
0
10
0
7.71
3.86
2.00
0.00
20.0
10.0
1.29
.286
0.00
7.71
9Ty Blach
T. Blach
0.00
2026
1
0
0
0
2
0
0
0
3.0
1
0
0
0
0
0
1
0
9
0
6.00
0.00
0.00
22.2
0.0
0.33
.143
0.00
3.00
10Alec Gamboa
A. Gamboa
0.00
2026
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
11Eduardo Rivera
E. Rivera
0.00
2026
1
0
0
0
3
0
0
0
3.1
1
0
0
0
0
0
1
0
10
0
8.10
0.00
0.00
30.0
0.0
0.30
.143
0.00
2.70
12Jared Koenig
J. Koenig
0.00
2026
3
0
0
0
4
0
0
0
2.1
3
0
2
0
2
0
0
2
13
1
15.43
7.71
2.00
0.00
30.8
15.4
2.14
.429
7.71
11.57
13Aroldis Chapman
A. Chapman
0.48
2026
19
0
1
.000
0
25
0
0
12
18.2
9
1
1
0
7
1
15
0
72
1
12.05
3.38
3.57
0.00
34.7
9.7
0.86
.231
0.48
4.34
14Yuki Matsui
Y. Matsui
0.54
2026
10
0
0
0
18
0
0
0
16.2
7
1
1
0
9
1
2
0
65
0
9.72
4.86
2.00
0.00
27.7
13.8
0.96
.189
0.54
3.78
15Brandyn Garcia
B. Garcia
0.69
2026
15
0
0
0
11
0
0
0
13.0
8
1
1
0
2
2
2
0
46
1
7.62
1.38
5.50
0.00
23.9
4.3
0.77
.258
0.69
5.54
16Tyler Samaniego
T. Samaniego
0.93
2026
19
0
2
.000
0
15
0
0
0
19.1
16
2
4
1
8
2
6
0
81
0
6.98
3.72
1.88
0.47
18.5
9.9
1.24
.273
1.86
7.45
17Dylan Lee
D. Lee
1.26
2026
29
2
0
1.000
0
35
0
0
0
28.2
14
4
5
1
4
0
0
0
104
0
10.99
1.26
8.75
0.31
33.7
3.8
0.63
.203
1.57
4.40
18Sam Aldegheri
S. Aldegheri
1.29
2026
2
1
0
1.000
0
7
0
0
0
7.0
6
1
1
1
3
0
1
0
30
0
9.00
3.86
2.33
1.29
23.3
10.0
1.29
.263
1.29
7.71
19Bryan Hudson
B. Hudson
1.42
2026
26
3
1
.750
0
25
0
0
2
25.1
22
4
6
0
9
3
7
1
107
0
8.88
3.20
2.78
0.00
23.4
8.4
1.22
.314
2.13
7.82
20Evan Sisk
E. Sisk
1.44
2026
21
0
0
0
30
0
0
0
25.0
17
4
4
1
9
3
4
0
99
0
10.80
3.24
3.33
0.36
30.3
9.1
1.04
.286
1.44
6.12
21Dylan Dodd
D. Dodd
1.54
2026
8
0
0
0
13
0
0
1
11.2
7
2
2
1
1
0
3
1
43
1
10.03
0.77
13.00
0.77
30.2
2.3
0.69
.214
1.54
5.40
22Brooks Raley
B. Raley
1.54
2026
26
1
1
.500
0
27
0
0
0
23.1
18
4
5
2
11
2
3
1
100
1
10.41
4.24
2.45
0.77
27.0
11.0
1.24
.276
1.93
6.94
23Brian Fitzpatrick
B. Fitzpatrick
1.59
2026
4
0
0
0
4
0
0
0
5.2
7
1
2
0
3
0
1
0
27
0
6.35
4.76
1.33
0.00
14.8
11.1
1.76
.350
3.18
11.12
24José A. Ferrer
J. A. Ferrer
1.63
2026
30
0
1
.000
0
24
0
0
3
27.2
30
5
6
1
3
3
4
0
117
3
7.81
0.98
8.00
0.33
20.5
2.6
1.19
.337
1.95
9.76
25Erik Sabrowski
E. Sabrowski
1.71
2026
25
2
1
.667
0
39
0
0
0
21.0
7
4
4
1
13
0
1
0
83
3
16.71
5.57
3.00
0.43
47.0
15.7
0.95
.200
1.71
3.00
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.

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AVG

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W

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K

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2026 Division Standings
TEAMWLPCTGB
33
30
.524
30
32
.484
2.5
30
32
.484
2.5
Astros Astros
28
36
.438
5.5
24
39
.381
9.0
Schedule
DATEMATCHUPTIME (ET)
Fri
6/5
@
8:10 PM
Sat
6/6
@
4:10 PM
Sun
6/7
@
2:10 PM
Mon
6/8
@
9:38 PM
Tue
6/9
@
9:38 PM
Last Game
PIT Pirates

34 - 29

5

Final

1

HOU Astros

28 - 36

Thu 4 Jun 2026

MLB 2026 Batting Leaders

MLB 2026 Pitching Leaders

MLB Fantasy 2026

MLB 2026 Betting

MLB 2026 Standings

NL EastWLPCTGB
42
21
.667
33
29
.532
8.5
31
32
.492
11.0
29
34
.460
13.0
27
35
.435
14.5
NL CentralWLPCTGB
37
23
.617
34
29
.540
4.5
32
28
.533
5.0
33
30
.524
5.5
31
30
.508
6.5
NL WestWLPCTGB
40
23
.635
33
29
.532
6.5
32
29
.525
7.0
25
38
.397
15.0
24
39
.381
16.0
AL EastWLPCTGB
36
23
.610
37
25
.597
0.5
30
33
.476
8.0
30
33
.476
8.0
26
35
.426
11.0
AL CentralWLPCTGB
36
28
.563
33
29
.532
2.0
29
35
.453
7.0
25
38
.397
10.5
25
38
.397
10.5
AL WestWLPCTGB
33
30
.524
30
32
.484
2.5
30
32
.484
2.5
28
36
.438
5.5
24
39
.381
9.0

MLB 2026 Scores & Schedule

Scores

DATEMATCHUPSCORE
Wed
5/20
@
9-4
Wed
5/20
@
5-4
Wed
5/20
@
3-2
Wed
5/20
@
2-1
Wed
5/20
@
4-3

Schedule

DATEMATCHUPTIME (ET)
Fri
6/5
@
2:20 PM
Fri
6/5
@
6:40 PM
Fri
6/5
@
6:40 PM
Fri
6/5
@
7:05 PM
Fri
6/5
@
7:07 PM