lowest era by a rookie pitcher since 1901

Since 1901, Harry Krause has the lowest ERA by a rookie, with an ERA of 1.39 in 1909.

Interpreted as:
lowest era with a minimum of 1 IP per team game by a rookie pitcher since 1901
NAMEERASEASONTMGWLW%GSSOCGSHOSVIPHERRHRBBHBPGFIBBTBFWPK/9BB/9K/BBHR/9K%BB%WHIPBABIPRAERA-FIPFIP-H/9PRAA
1Harry Krause
H. Krause
1.39
1909
PHA PHA
32
18
8
.692
21
139
16
7
0
213.0
151
33
49
2
49
13
8
801
2
5.87
2.07
2.84
0.08
17.4
6.1
0.94
.249
2.07
58
1.91
82
6.38
9.5
2Ed Reulbach
E. Reulbach
1.42
1905
CHC CHC
34
18
14
.563
29
152
28
5
1
291.2
208
46
71
1
73
18
5
1,124
5
4.69
2.25
2.08
0.03
13.5
6.5
0.96
.235
2.19
48
2.46
85
6.42
14
3Jack Pfiester
J. Pfiester
1.51
1906
CHC CHC
31
20
8
.714
29
153
20
4
0
250.2
173
42
63
3
63
13
2
966
4
5.49
2.26
2.43
0.11
15.8
6.5
0.94
.232
2.26
57
2.21
80
6.21
15.4
4George McQuillan
G. McQuillan
1.53
1908
PHN PHN
48
23
17
.575
42
114
32
7
2
359.2
263
61
88
1
91
6
6
1,367
5
2.85
2.28
1.25
0.03
8.3
6.7
0.98
.227
2.20
66
2.31
95
6.58
4.5
5Ed Summers
E. Summers
1.64
1908
DET DET
40
24
12
.667
32
103
23
5
1
301.0
271
55
112
3
55
20
8
1,195
5
3.08
1.64
1.87
0.09
8.6
4.6
1.08
.264
3.35
66
2.29
99
8.10
2.4
6Russ Ford
R. Ford
1.65
1910
NYH NYH
36
26
6
.813
33
209
29
8
1
299.2
194
55
69
4
70
8
3
1,112
5
6.28
2.10
2.99
0.12
18.8
6.3
0.88
.231
2.07
63
1.88
69
5.83
28.3
7Bill Burns
B. Burns
1.70
1908
WSH WSH
23
6
11
.353
19
55
11
2
0
164.0
135
31
58
3
18
4
1
612
1
3.02
0.99
3.06
0.16
9.0
2.9
0.93
.248
3.18
74
2.07
96
7.41
0.7
8Vean Gregg
V. Gregg
1.80
1911
CLE CLE
34
23
7
.767
26
125
22
5
0
244.2
172
49
67
2
86
10
8
937
8
4.60
3.16
1.45
0.07
13.3
9.2
1.05
.238
2.46
53
3.03
93
6.33
6.7
9King Cole
K. Cole
1.80
1910
CHC CHC
33
20
4
.833
29
114
21
4
1
239.2
174
48
64
2
130
9
2
962
9
4.28
4.88
0.88
0.08
11.9
13.5
1.27
.243
2.40
60
3.22
110
6.53
-8.3
10Hippo Vaughn
H. Vaughn
1.83
1910
NYH NYH
30
13
11
.542
25
107
18
5
1
221.2
190
45
76
1
58
10
3
869
7
4.34
2.35
1.84
0.04
12.3
6.7
1.12
.273
3.09
69
2.34
86
7.71
10.3
11Reb Russell
R. Russell
1.90
1913
CWS CWS
52
22
16
.579
36
122
26
8
4
316.2
250
67
89
2
79
7
10
1,221
6
3.47
2.25
1.54
0.06
10.0
6.5
1.04
.245
2.53
67
2.68
92
7.11
7.1
12Jeff Tesreau
J. Tesreau
1.96
1912
NYG NYG
36
17
7
.708
28
119
19
3
1
243.0
177
53
90
2
106
10
5
1,005
6
4.41
3.93
1.12
0.07
11.8
10.5
1.16
.228
3.33
59
3.41
99
6.56
-0.1
13Carl Lundgren
C. Lundgren
1.97
1902
CHO CHO
18
9
9
.500
18
68
17
1
0
160.0
158
35
59
2
45
6
0
664
4
3.83
2.53
1.51
0.11
10.2
6.8
1.27
.287
3.32
74
2.94
105
8.89
-3.5
14Jeff Pfeffer
J. Pfeffer
1.97
1914
BKN BKN
43
23
12
.657
34
135
27
3
4
315.0
264
69
99
9
91
7
11
1,268
3
3.86
2.60
1.48
0.26
10.6
7.2
1.13
.249
2.83
69
2.88
95
7.54
5.4
15Scott Perry
S. Perry
1.98
1918
PHA PHA
44
20
19
.513
36
81
30
3
2
332.1
295
73
97
1
111
2
7
1,342
4
2.19
3.01
0.73
0.03
6.0
8.3
1.22
.256
2.63
70
2.80
97
7.99
4
16Harry Gaspar
H. Gaspar
2.01
1909
CIN CIN
44
19
11
.633
29
65
19
4
2
260.0
228
58
97
0
57
9
11
1,010
3
2.25
1.97
1.14
0.00
6.4
5.6
1.10
.259
3.36
79
2.48
95
7.89
3.1
17Doc Watson
D. Watson
2.01
1914
TOT
35
12
12
.500
25
87
14
5
1
228.0
186
51
68
3
73
7
8
889
1
3.43
2.88
1.19
0.12
9.8
8.2
1.14
.255
2.68
65
2.90
102
7.34
-2.9
18Stan Bahnsen
S. Bahnsen
2.05
1968
NYY NYY
37
17
12
.586
34
162
10
1
0
267.1
216
61
72
14
68
2
3
6
1,070
4
5.45
2.29
2.38
0.47
15.1
6.4
1.06
.245
2.42
73
2.64
88
7.27
10.1
19Glenn Liebhardt
G. Liebhardt
2.05
1907
CLE CLE
38
18
14
.563
34
110
27
4
1
280.1
254
64
100
1
85
10
4
1,136
10
3.53
2.73
1.29
0.03
9.7
7.5
1.21
.272
3.21
82
2.46
104
8.15
-3.6
20Nap Rucker
N. Rucker
2.06
1907
BKN BKN
37
15
13
.536
30
131
26
4
0
275.1
242
63
94
3
80
8
7
1,090
10
4.28
2.62
1.64
0.10
12.0
7.3
1.17
.275
3.07
87
2.33
92
7.91
4.8
21Frank Smith
F. Smith
2.08
1904
CWS CWS
26
16
9
.640
23
107
22
4
0
203.1
157
47
62
0
58
12
3
802
12
4.74
2.57
1.84
0.00
13.3
7.2
1.06
.251
2.74
85
2.40
102
6.95
-2.6
22Jerry Koosman
J. Koosman
2.08
1968
NYM NYM
35
19
12
.613
34
178
17
7
0
263.2
221
61
72
16
69
8
0
7
1,058
8
6.08
2.36
2.58
0.55
16.8
6.5
1.10
.260
2.46
70
2.70
96
7.54
3.7
23Johnny Beazley
J. Beazley
2.13
1942
SLN SLN
43
21
6
.778
23
91
13
3
3
215.1
181
51
67
4
73
3
15
890
7
3.80
3.05
1.25
0.17
10.2
8.2
1.18
.246
2.80
63
2.87
82
7.57
15.3
24Joe Boehling
J. Boehling
2.14
1913
WSH WSH
38
17
7
.708
25
110
18
3
4
235.1
197
56
82
3
82
9
9
924
6
4.21
3.14
1.34
0.11
11.9
8.9
1.19
.269
3.14
73
2.95
98
7.53
1.3
25Joe Wood
J. Wood
2.18
1909
BOS BOS
24
11
7
.611
19
88
13
4
0
160.2
121
39
51
1
43
6
3
629
5
4.93
2.41
2.05
0.06
14.0
6.8
1.02
.244
2.86
88
2.12
87
6.78
5.6
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