which pitcher including relievers has the highest k/9 in a single season

Shane Bieber has the highest K/9 in a season, with 14.20 per nine innings in 2020.

Interpreted as:
Which pitcher including relievers has the highest k/9 with a minimum of 1 IP per team game in a single season?
NAME K/9 SEASON TM G W L W% GS ERA SO CG SHO SV IP H ER R HR BB HBP GF IBB TBF WP BB/9 K/BB HR/9 K% BB% WHIP BABIP RA ERA- FIP FIP- H/9 PRAA
1 Shane Bieber
S. Bieber
14.20
2020
CLE CLE
12
8
1
.889
12
1.63
122
0
0
0
77.1
46
14
15
7
21
1
0
0
297
5
2.44
5.81
0.81
41.1
7.1
0.87
.267
1.75
37
2.06
46
5.35
20.5
2 Gerrit Cole
G. Cole
13.82
2019
HOU HOU
33
20
5
.800
33
2.50
326
0
0
0
212.1
142
59
66
29
48
3
0
0
817
4
2.03
6.79
1.23
39.9
5.9
0.89
.275
2.80
55
2.63
58
6.02
45
3 Jacob deGrom
J. deGrom
13.76
2020
NYM NYM
12
4
2
.667
12
2.38
104
0
0
0
68.0
47
18
21
7
18
0
0
0
268
4
2.38
5.78
0.93
38.8
6.7
0.96
.288
2.78
57
2.26
52
6.22
15.9
4 Spencer Strider
S. Strider
13.55
2023
ATL ATL
32
19
5
.792
32
3.86
281
0
0
0
186.2
146
80
85
22
58
9
0
1
763
6
2.80
4.84
1.06
36.8
7.6
1.09
.316
4.10
87
2.85
66
7.04
30.3
5 Randy Johnson
R. Johnson
13.41
2001
ARI ARI
35
21
6
.778
34
2.49
372
3
2
0
249.2
181
69
74
19
71
18
1
2
994
8
2.56
5.24
0.68
37.4
7.1
1.01
.315
2.67
55
2.12
48
6.52
63.9
6 Pedro Martinez
P. Martinez
13.20
1999
BOS BOS
31
23
4
.852
29
2.07
313
5
1
0
213.1
160
49
56
9
37
9
1
1
835
6
1.56
8.46
0.38
37.5
4.4
0.92
.323
2.36
42
1.38
30
6.75
79.4
7 Chris Sale
C. Sale
12.93
2017
BOS BOS
32
17
8
.680
32
2.90
308
1
0
0
214.1
165
69
73
24
43
8
0
0
851
3
1.81
7.16
1.01
36.2
5.1
0.97
.301
3.07
63
2.45
56
6.93
45.5
8 Max Scherzer
M. Scherzer
12.69
2019
WSH WSH
27
11
7
.611
27
2.92
243
0
0
0
172.1
144
56
59
18
33
7
0
2
693
0
1.72
7.36
0.94
35.1
4.8
1.03
.321
3.08
66
2.44
55
7.52
38.6
9 Corbin Burnes
C. Burnes
12.61
2021
MIL MIL
28
11
5
.688
28
2.43
234
0
0
0
167.0
123
45
47
7
34
6
0
0
657
5
1.83
6.88
0.38
35.6
5.2
0.94
.309
2.53
58
1.62
38
6.63
48.9
10 Kerry Wood
K. Wood
12.58
1998
CHC CHC
26
13
6
.684
26
3.40
233
1
1
0
166.2
117
63
69
14
85
11
0
1
699
6
4.59
2.74
0.76
33.3
12.2
1.21
.289
3.73
80
3.16
73
6.32
21.9
11 Randy Johnson
R. Johnson
12.56
2000
ARI ARI
35
19
7
.731
35
2.64
347
8
3
0
248.2
202
73
89
23
76
6
0
1
1,001
5
2.75
4.57
0.83
34.7
7.6
1.12
.326
3.22
56
2.53
53
7.31
61.1
12 Henry Porter
H. Porter
12.53
1884
MIL
6
3
3
.500
6
3.00
71
6
1
0
51.0
32
17
25
1
9
0
200
6
1.59
7.89
0.18
35.5
4.5
0.80
4.41
23
1.27
11
5.65
24.1
13 Jose Fernandez
J. Fernandez
12.49
2016
MIA MIA
29
16
8
.667
29
2.86
253
0
0
0
182.1
149
58
63
13
55
6
0
6
737
9
2.71
4.60
0.64
34.3
7.5
1.12
.332
3.11
72
2.29
57
7.35
35.4
14 Gerrit Cole
G. Cole
12.40
2018
HOU HOU
32
15
5
.750
32
2.88
276
1
1
0
200.1
143
64
68
19
64
7
0
0
799
9
2.88
4.31
0.85
34.5
8.0
1.03
.286
3.05
70
2.70
65
6.42
32.7
15 Randy Johnson
R. Johnson
12.35
1995
SEA SEA
30
18
2
.900
30
2.48
294
6
3
0
214.1
159
59
65
12
65
6
0
1
866
5
2.73
4.52
0.50
33.9
7.5
1.05
.301
2.73
53
2.08
44
6.68
62
16 Trevor Bauer
T. Bauer
12.33
2020
CIN CIN
11
5
4
.556
11
1.73
100
2
2
0
73.0
41
14
17
9
17
3
0
1
278
3
2.10
5.88
1.11
36.0
6.1
0.79
.215
2.10
36
2.87
61
5.05
14.1
17 Max Scherzer
M. Scherzer
12.30
2020
WSH WSH
12
5
4
.556
12
3.74
92
1
0
0
67.1
70
28
30
10
23
1
0
1
295
6
3.07
4.00
1.34
31.2
7.8
1.38
.355
4.01
83
3.45
76
9.36
8
18 Randy Johnson
R. Johnson
12.30
1997
SEA SEA
30
20
4
.833
29
2.28
291
5
2
0
213.0
147
54
60
20
77
10
0
2
850
4
3.25
3.78
0.85
34.2
9.1
1.05
.281
2.54
50
2.82
62
6.21
41.3
19 Dylan Cease
D. Cease
12.28
2021
CWS CWS
32
13
7
.650
32
3.91
226
1
1
0
165.2
139
72
77
20
68
9
0
0
708
13
3.69
3.32
1.09
31.9
9.6
1.25
.309
4.18
90
3.40
76
7.55
18.9
20 Max Scherzer
M. Scherzer
12.24
2018
WSH WSH
33
18
7
.720
33
2.53
300
2
1
0
220.2
150
62
66
23
51
12
0
4
866
4
2.08
5.88
0.94
34.6
5.9
0.91
.265
2.69
62
2.65
64
6.12
36.1
21 Justin Verlander
J. Verlander
12.20
2018
HOU HOU
34
16
9
.640
34
2.52
290
1
1
0
214.0
156
60
63
28
37
8
0
0
833
5
1.56
7.84
1.18
34.8
4.4
0.90
.272
2.65
62
2.78
67
6.56
33
22 Robbie Ray
R. Ray
12.13
2019
ARI ARI
33
12
8
.600
33
4.34
235
0
0
0
174.1
150
84
91
30
84
5
0
5
747
7
4.34
2.80
1.55
31.5
11.2
1.34
.305
4.70
98
4.28
99
7.74
1
23 Dinelson Lamet
D. Lamet
12.13
2020
SDP SDP
12
3
1
.750
12
2.09
93
0
0
0
69.0
39
16
18
5
20
4
0
0
267
1
2.61
4.65
0.65
34.8
7.5
0.86
.234
2.35
49
2.47
56
5.09
15.1
24 Randy Johnson
R. Johnson
12.12
1998
TOT
34
19
11
.633
34
3.28
329
10
6
0
244.1
203
89
102
23
86
14
0
1
1,014
7
3.17
3.83
0.85
32.4
8.5
1.18
.320
3.76
72
2.89
65
7.48
42.2
25 Aaron Nola
A. Nola
12.11
2020
PHI PHI
12
5
5
.500
12
3.28
96
2
1
0
71.1
54
26
31
9
23
2
0
2
289
1
2.90
4.17
1.14
33.2
8.0
1.08
.283
3.91
73
3.18
70
6.81
10.6

More Guardians Stats

Team Rankings

HR

123

18th

R

466

26th

SO

987

14th

ERA

3.83

11th

2025 Division Standings
TEAM W L PCT GB
Tigers Tigers
68
51
.571
Guardians Guardians
61
56
.521
6.0
Royals Royals
58
60
.492
9.5
Twins Twins
56
61
.479
11.0
White Sox White Sox
43
75
.364
24.5
Schedule
DATE MATCHUP TIME (ET)
Tue
8/12
MIA MIA
@
CLE CLE
6:40 PM
Wed
8/13
MIA MIA
@
CLE CLE
6:40 PM
Thu
8/14
MIA MIA
@
CLE CLE
6:40 PM
Fri
8/15
ATL ATL
@
CLE CLE
7:10 PM
Sat
8/16
ATL ATL
@
CLE CLE
7:10 PM
Last Game
CWS White Sox

43 - 75

6

Final

4

CLE Guardians

61 - 56

Sun 10 Aug 2025

MLB 2025 Batting Leaders

MLB 2025 Pitching Leaders

MLB Fantasy 2025

MLB 2025 Betting

MLB 2025 Division Standings

NL East W L PCT GB
Phillies Phillies
68
49
.581
Mets Mets
63
55
.534
5.5
NL Central W L PCT GB
Brewers Brewers
73
44
.624
Cubs Cubs
67
50
.573
6.0
NL West W L PCT GB
Dodgers Dodgers
68
50
.576
Padres Padres
66
52
.559
2.0
AL East W L PCT GB
Blue Jays Blue Jays
69
50
.580
Red Sox Red Sox
65
54
.546
4.0
AL Central W L PCT GB
Tigers Tigers
68
51
.571
Guardians Guardians
61
56
.521
6.0
AL West W L PCT GB
Astros Astros
66
52
.559
Mariners Mariners
66
53
.555
0.5

MLB 2025 Scores & Schedule

Scores

DATE MATCHUP SCORE
Sat
7/26
PHI PHI
@
NYY NYY
3-4
Sat
7/26
LAD LAD
@
BOS BOS
3-4
Sat
7/26
AZ AZ
@
PIT PIT
0-6
Sat
7/26
COL COL
@
BAL BAL
1-5
Sat
7/26
TBR TBR
@
CIN CIN
1-2

Schedule

DATE MATCHUP TIME (ET)
Mon
8/11
WSH WSH
@
KCR KCR
7:40 PM
Mon
8/11
DET DET
@
CWS CWS
7:40 PM
Mon
8/11
PIT PIT
@
MIL MIL
7:40 PM
Mon
8/11
COL COL
@
STL STL
7:45 PM
Mon
8/11
AZ AZ
@
TEX TEX
8:05 PM