which pitcher has the highest k/9 in a season all tk

Tom Koehler has the highest K/9 in a season, with 8.78 per nine innings in his rookie season in 2012.

NAMEK/9SEASONTMGWLW%GSERASOCGSHOSVIPHERRHRBBHBPGFIBBTBFWPBB/9K/BBHR/9K%BB%WHIPBABIPRAERA-FIPFIP-H/9PRAA
1Tom Koehler
T. Koehler
8.78
2012
8
0
1
.000
1
5.40
13
0
0
0
13.1
15
8
8
4
2
0
0
1
56
0
1.35
6.50
2.70
23.2
3.6
1.27
.297
5.40
140
5.49
145
10.13
-2.6
2Tom Koehler
T. Koehler
7.68
2017
TOT
27
1
7
.125
13
6.69
62
0
0
0
72.2
83
54
55
16
35
7
0
3
334
1
4.33
1.77
1.98
18.6
10.5
1.62
.313
6.81
162
6.04
143
10.28
-15.1
3Tom Koehler
T. Koehler
7.49
2016
33
9
13
.409
33
4.33
147
0
0
0
176.2
176
85
93
22
83
5
0
7
774
9
4.23
1.77
1.12
19.0
10.7
1.47
.298
4.74
109
4.59
115
8.97
-12.1
4Tom Koehler
T. Koehler
7.20
2014
32
10
10
.500
32
3.81
153
0
0
0
191.1
177
81
84
16
71
7
0
0
803
4
3.34
2.15
0.75
19.1
8.8
1.30
.290
3.95
106
3.84
107
8.33
-6
5Tom Koehler
T. Koehler
6.58
2015
32
11
14
.440
31
4.08
137
0
0
0
187.1
180
85
96
22
77
6
0
3
800
2
3.70
1.78
1.06
17.1
9.6
1.37
.283
4.61
108
4.52
120
8.65
-16.5
6Tom Koehler
T. Koehler
5.79
2013
29
5
10
.333
23
4.41
92
0
0
0
143.0
140
70
72
14
54
5
2
2
601
7
3.40
1.70
0.88
15.3
9.0
1.36
.289
4.53
120
4.27
117
8.81
-10.3

More Marlins Stats

Team Batting Leaders

HR

6

Hicks

Liam Hicks

RBI

27

Hicks

Liam Hicks

AVG

.340

Edwards

Xavier Edwards
Team Pitching Leaders

W

3

Alcantara

Sandy Alcantara

K

33

Pérez

Eury Pérez

ERA

1.56

Phillips

Tyler Phillips
Team Rankings

HR

21

26th

R

130

15th

SO

249

13th

ERA

4.12

16th

2026 Division Standings
TEAMWLPCTGB
20
9
.690
13
16
.448
7.0
Marlins Marlins
13
16
.448
7.0
9
19
.321
10.5
9
19
.321
10.5
Schedule
DATEMATCHUPTIME (ET)
Tue
4/28
@
10:10 PM
Wed
4/29
@
3:10 PM
Fri
5/1
@
7:10 PM
Sat
5/2
@
4:10 PM
Sun
5/3
@
1:40 PM
Last Game
MIA Marlins

13 - 16

4

Final

5

LAD Dodgers

20 - 9

Mon 27 Apr 2026

MLB 2026 Batting Leaders

MLB 2026 Pitching Leaders

MLB Fantasy 2026

MLB 2026 Betting

MLB 2026 Standings

NL EastWLPCTGB
20
9
.690
13
16
.448
7.0
13
16
.448
7.0
9
19
.321
10.5
9
19
.321
10.5
NL CentralWLPCTGB
18
10
.643
17
12
.586
1.5
16
13
.552
2.5
15
13
.536
3.0
14
13
.519
3.5
NL WestWLPCTGB
20
9
.690
19
9
.679
0.5
15
12
.556
4.0
13
15
.464
6.5
13
16
.448
7.0
AL EastWLPCTGB
19
10
.655
17
11
.607
1.5
13
15
.464
5.5
12
16
.429
6.5
12
17
.414
7.0
AL CentralWLPCTGB
15
14
.517
15
15
.500
0.5
13
16
.448
2.0
12
17
.414
3.0
11
17
.393
3.5
AL WestWLPCTGB
15
13
.536
14
15
.483
1.5
14
16
.467
2.0
12
18
.400
4.0
11
18
.379
4.5

MLB 2026 Scores & Schedule

Scores

DATEMATCHUPSCORE
Sun
4/12
@
4-3
Sun
4/12
@
1-0
Sun
4/12
@
5-2
Sun
4/12
@
2-7
Mon
4/13
@
2-6

Schedule

DATEMATCHUPTIME (ET)
Tue
4/28
@
6:10 PM
Tue
4/28
@
6:35 PM
Tue
4/28
@
6:40 PM
Tue
4/28
@
6:40 PM
Tue
4/28
@
6:40 PM