who is the worst pitcher in a single season by era with at least 50 innings pitched

Roy Halladay has the worst ERA with 50.0+ innings pitched in a season, with an ERA of 10.64 in 2000.

NAMEERAIPSEASONTMGWLW%GSSOCGSHOSVHERRHRBBHBPGFIBBTBFWPK/9BB/9K/BBHR/9K%BB%WHIPBABIPRAERA-FIPFIP-H/9PRAA
1Roy Halladay
R. Halladay
10.64
67.2
2000
TOR TOR
19
4
7
.364
13
44
0
0
0
107
80
87
14
42
2
4
0
349
6
5.85
5.59
1.05
1.86
12.6
12.0
2.20
.377
11.57
212
6.47
134
14.23
-12.3
2Charlie Stecher
C. Stecher
10.32
68.0
1890
PHA PHA
10
0
10
.000
10
18
9
0
0
111
78
110
1
60
14
0
386
12
2.38
7.94
0.30
0.13
4.7
15.5
2.51
.375
14.56
267
5.84
161
14.69
-16.7
3Micah Bowie
M. Bowie
10.24
51.0
1999
TOT
14
2
7
.222
11
41
0
0
0
81
58
60
9
34
2
2
2
265
4
7.24
6.00
1.21
1.59
15.5
12.8
2.25
.402
10.59
225
5.93
127
14.29
-7.1
4Steve Blass
S. Blass
9.85
88.2
1973
PIT PIT
23
3
9
.250
18
27
1
0
0
109
97
98
11
84
12
1
4
455
9
2.74
8.53
0.32
1.12
5.9
18.5
2.18
.305
9.95
277
6.81
191
11.06
-33.1
5Sean Bergman
S. Bergman
9.66
68.0
2000
MIN MIN
15
4
5
.444
14
35
0
0
0
111
73
76
18
33
2
0
1
337
2
4.63
4.37
1.06
2.38
10.4
9.8
2.12
.373
10.06
193
7.08
150
14.69
-18.2
6Andy Larkin
A. Larkin
9.64
74.2
1998
FLA FLA
17
3
8
.273
14
43
0
0
0
101
80
87
12
55
4
0
3
373
3
5.18
6.63
0.78
1.45
11.5
14.7
2.09
.344
10.49
237
6.44
153
12.17
-18.9
7Edwin Jackson
E. Jackson
9.58
67.2
2019
TOT
18
3
10
.231
13
52
0
0
0
105
72
81
23
32
3
0
0
336
6
6.92
4.26
1.63
3.06
15.5
9.5
2.02
.363
10.77
209
7.64
166
13.97
-22.8
8Frank Gabler
F. Gabler
9.43
69.2
1938
TOT
19
1
7
.125
7
17
3
0
0
104
73
77
12
35
1
9
335
2
2.20
4.52
0.49
1.55
5.1
10.4
2.00
.341
9.95
200
6.23
136
13.44
-12.7
9Bradley Blalock
B. Blalock
9.36
58.2
2025
COL COL
14
2
6
.250
12
27
0
0
0
85
61
61
17
23
3
2
1
275
2
4.14
3.53
1.17
2.61
9.8
8.4
1.84
.332
9.36
196
7.30
168
13.04
-18.3
10Alfredo Simon
A. Simon
9.36
58.2
2016
CIN CIN
15
2
7
.222
11
39
0
0
0
89
61
64
15
31
8
1
2
298
3
5.98
4.76
1.26
2.30
13.1
10.4
2.05
.361
9.82
220
7.13
168
13.65
-18.2
11Ed O'Neil
E. O'Neil
9.26
68.0
1890
TOT
8
0
8
.000
8
19
8
0
0
111
70
95
0
45
7
0
364
13
2.51
5.96
0.42
0.00
5.2
12.4
2.29
.379
12.57
239
4.65
128
14.69
-7.5
12Reggie Grabowski
R. Grabowski
9.23
65.1
1934
PHN PHN
27
1
3
.250
5
13
0
0
0
114
67
72
13
23
3
7
328
4
1.79
3.17
0.57
1.79
4.0
7.0
2.10
.366
9.92
201
6.50
140
15.70
-11.5
13Dallas Keuchel
D. Keuchel
9.20
60.2
2022
TOT
14
2
9
.182
14
45
0
0
0
94
62
69
11
31
0
0
2
303
3
6.68
4.60
1.45
1.63
14.9
10.2
2.06
.384
10.24
232
5.51
137
13.95
-9.8
14Todd Van Poppel
T. Van Poppel
9.06
99.1
1996
TOT
37
3
9
.250
15
53
1
1
1
139
100
107
24
62
3
8
3
491
7
4.80
5.62
0.85
2.17
10.8
12.6
2.02
.330
9.69
184
7.20
145
12.59
-24.6
15Willis Hudlin
W. Hudlin
9.00
64.0
1936
CLE CLE
27
1
5
.167
7
20
1
0
0
112
64
74
1
31
2
5
325
3
2.81
4.36
0.65
0.14
6.2
9.5
2.23
.410
10.41
179
4.39
91
15.75
3
16Bryan Rekar
B. Rekar
8.95
58.1
1996
COL COL
14
2
4
.333
11
25
0
0
0
87
58
61
11
26
5
0
1
289
4
3.86
4.01
0.96
1.70
8.7
9.0
1.94
.342
9.41
173
6.35
133
13.42
-9
17Herman Besse
H. Besse
8.83
53.0
1940
PHA PHA
17
0
3
.000
5
19
0
0
0
70
52
56
10
34
3
7
262
2
3.23
5.77
0.56
1.70
7.3
13.0
1.96
.306
9.51
199
6.67
154
11.89
-13.6
18Glenn Liebhardt
G. Liebhardt
8.78
55.1
1936
SLA SLA
24
0
0
0
20
0
0
0
98
54
58
4
27
2
12
291
2
3.25
4.39
0.74
0.65
6.9
9.3
2.26
.395
9.43
166
5.05
100
15.94
0.2
19Joe Mays
J. Mays
8.70
50.2
2006
TOT
13
0
5
.000
10
25
0
0
0
78
49
56
11
26
0
0
2
250
6
4.44
4.62
0.96
1.95
10.0
10.4
2.05
.356
9.95
191
6.51
143
13.86
-11
20Luis Mendoza
L. Mendoza
8.67
63.1
2008
TEX TEX
25
3
8
.273
11
35
0
0
1
97
61
74
7
25
6
6
4
316
5
4.97
3.55
1.40
0.99
11.1
7.9
1.93
.370
10.52
194
4.92
112
13.78
-3.5
21Mark Clark
M. Clark
8.60
74.1
1999
TEX TEX
15
3
7
.300
15
44
0
0
0
103
71
73
17
34
1
0
1
353
7
5.33
4.12
1.29
2.06
12.5
9.6
1.84
.335
8.84
172
6.32
129
12.47
-11.6
22Ron Davis
R. Davis
8.59
58.2
1986
TOT
53
2
8
.200
0
40
0
0
2
86
56
60
10
32
4
33
8
289
4
6.14
4.91
1.25
1.53
13.8
11.1
2.01
.374
9.20
205
5.45
133
13.19
-8.8
23Miguel Batista
M. Batista
8.54
65.1
2000
TOT
18
2
7
.222
9
37
0
0
0
85
62
68
19
37
2
2
2
310
4
5.10
5.10
1.00
2.62
11.9
11.9
1.87
.307
9.37
168
7.56
153
11.71
-18.5
24Jesse Jefferson
J. Jefferson
8.52
62.1
1976
CWS CWS
19
2
5
.286
9
30
0
0
0
86
59
62
4
42
2
5
0
307
4
4.33
6.06
0.71
0.58
9.8
13.7
2.05
.358
8.95
240
4.62
132
12.42
-7.9
25Bobby Miller
B. Miller
8.52
56.0
2024
LAD LAD
13
2
4
.333
13
52
0
0
0
69
53
53
17
30
2
0
0
258
7
8.36
4.82
1.73
2.73
20.2
11.6
1.77
.331
8.52
210
6.96
168
11.09
-17.2
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