best k/9 for a relief pitcher all-time with more than 10 games played

Rafael Martin has the best career K/9 by a relief pitcher when pitching in >10 games, with 16.88 per nine innings.

NAME K/9 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 H/9
1 Rafael Martin
R. Martin
16.88
21
2
0
1.000
0
4.50
30
0
0
0
16.0
12
8
10
4
6
1
7
0
68
0
3.38
5.00
2.25
44.1
8.8
1.13
.296
5.63
6.75
2 Yusei Kikuchi
Y. Kikuchi
16.20
12
2
0
1.000
0
4.91
33
0
0
1
18.1
17
10
10
4
9
2
4
0
83
0
4.42
3.67
1.96
39.8
10.8
1.42
.371
4.91
8.35
3 Randy Johnson
R. Johnson
15.87
15
2
0
1.000
0
2.51
57
0
0
2
32.1
26
9
11
3
6
2
7
0
130
0
1.67
9.50
0.84
43.8
4.6
0.99
.371
3.06
7.24
4 Aroldis Chapman
A. Chapman
14.58
863
60
47
.561
0
2.52
1,331
0
0
367
821.1
475
230
255
54
408
33
563
7
3,341
87
4.47
3.26
0.59
39.8
12.2
1.08
.278
2.79
5.20
5 Josh Hader
J. Hader
14.56
468
34
31
.523
0
2.64
829
0
0
226
512.1
282
150
164
65
198
24
321
6
2,019
19
3.48
4.19
1.14
41.1
9.8
0.94
.240
2.88
4.95
6 Edwin Díaz
E. Díaz
14.54
520
28
36
.438
0
2.82
839
0
0
253
519.1
356
163
176
54
182
40
395
9
2,105
33
3.15
4.61
0.94
39.9
8.6
1.04
.305
3.05
6.17
7 Mason Miller
M. Miller
14.53
119
3
4
.429
0
2.65
219
0
0
50
135.2
71
40
47
12
54
3
81
5
521
6
3.58
4.06
0.80
42.0
10.4
0.92
.253
3.12
4.71
8 Dellin Betances
D. Betances
14.47
373
21
23
.477
0
2.55
631
0
0
36
392.1
239
111
124
26
181
28
86
5
1,604
28
4.15
3.49
0.60
39.3
11.3
1.07
.289
2.84
5.48
9 Cesar Cabral
C. Cabral
14.29
14
0
0
0
6.35
9
0
0
0
5.2
7
4
4
0
4
4
2
0
30
3
6.35
2.25
0.00
30.0
13.3
1.94
.538
6.35
11.12
10 Justin Steele
J. Steele
14.18
11
2
0
1.000
0
2.03
21
0
0
0
13.1
7
3
4
2
7
2
2
2
56
0
4.72
3.00
1.35
37.5
12.5
1.05
.208
2.70
4.72
11 Devin Williams
D. Williams
14.06
308
31
16
.660
0
2.45
465
0
0
86
297.2
174
81
100
20
137
15
126
4
1,211
17
4.14
3.39
0.60
38.4
11.3
1.04
.268
3.02
5.26
12 Craig Kimbrel
C. Kimbrel
14.04
851
56
48
.538
0
2.58
1,282
0
0
440
821.2
492
236
263
75
346
40
656
11
3,306
70
3.79
3.71
0.82
38.8
10.5
1.02
.267
2.88
5.39
13 Michel Otañez
M. Otañez
13.96
42
1
0
1.000
0
4.81
61
0
0
1
39.1
34
21
23
4
25
4
7
0
179
6
5.72
2.44
0.92
34.1
14.0
1.50
.353
5.26
7.78
14 Félix Bautista
F. Bautista
13.83
156
13
7
.650
0
2.01
248
0
0
67
161.1
84
36
42
14
72
3
104
1
632
10
4.02
3.44
0.78
39.2
11.4
0.97
.237
2.34
4.69
15 Darwinzon Hernandez
D. Hernandez
13.77
90
3
3
.500
0
4.92
126
0
0
0
82.1
72
45
50
10
68
11
9
1
394
8
7.43
1.85
1.09
32.0
17.3
1.70
.346
5.47
7.87
16 Josh James
J. James
13.77
67
6
1
.857
0
4.70
129
0
0
1
84.1
65
44
46
14
44
6
24
0
363
8
4.70
2.93
1.49
35.5
12.1
1.29
.300
4.91
6.94
17 James Karinchak
J. Karinchak
13.74
174
12
11
.522
0
3.10
253
0
0
15
165.2
98
57
64
18
98
6
48
2
697
15
5.32
2.58
0.98
36.3
14.1
1.18
.248
3.48
5.32
18 Angel Perdomo
A. Perdomo
13.67
56
4
2
.667
0
5.54
79
0
0
0
52.0
38
32
35
7
37
7
17
6
231
1
6.40
2.14
1.21
34.2
16.0
1.44
.307
6.06
6.58
19 Freddy Peralta
F. Peralta
13.61
49
8
2
.800
0
3.86
127
0
0
1
84.0
67
36
41
9
41
2
6
1
360
2
4.39
3.10
0.96
35.3
11.4
1.29
.320
4.39
7.18
20 Fernando Cruz
F. Cruz
13.52
183
7
14
.333
0
4.38
275
0
0
2
183.0
142
89
94
19
94
6
26
2
784
19
4.62
2.93
0.93
35.1
12.0
1.29
.315
4.62
6.98
21 Michael Soroka
M. Soroka
13.50
22
0
5
.000
0
2.58
68
0
0
0
45.1
30
13
22
4
24
3
8
1
193
2
4.76
2.83
0.79
35.2
12.4
1.19
.277
4.37
5.96
22 Brian Moran
B. Moran
13.50
18
2
0
1.000
0
7.94
17
0
0
0
11.1
15
10
10
3
9
2
2
2
60
0
7.15
1.89
2.38
28.3
15.0
2.12
.414
7.94
11.91
23 Brad Wieck
B. Wieck
13.42
65
2
2
.500
0
3.77
89
0
0
0
59.2
42
25
26
10
24
3
10
0
248
1
3.62
3.71
1.51
35.9
9.7
1.11
.262
3.92
6.34
24 Jeremiah Estrada
J. Estrada
13.35
156
10
8
.556
0
3.47
223
0
0
4
150.1
118
58
63
21
65
3
29
4
637
9
3.89
3.43
1.26
35.0
10.2
1.22
.298
3.77
7.06
25 Grant Taylor
G. Taylor
13.24
34
2
3
.400
0
4.67
51
0
0
6
34.2
35
18
18
0
14
0
10
1
148
5
3.63
3.64
0.00
34.5
9.5
1.41
.422
4.67
9.09
StatMuse has game-level data for games pitched going back to the 1908 season.
Some of the information used here was obtained free of charge from Retrosheet.

More Nationals Stats

Team Rankings

HR

161

24th

R

687

20th

SO

1,248

28th

ERA

5.35

29th

2025 Division Standings
TEAM W L PCT GB
Phillies Phillies
96
66
.593
Mets Mets
83
79
.512
13.0
Marlins Marlins
79
83
.488
17.0
Braves Braves
76
86
.469
20.0
Nationals Nationals
66
96
.407
30.0
Last Game
WSH Nationals

66 - 96

0

Final

8

CWS White Sox

60 - 102

Sun 28 Sep 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
96
66
.593
Mets Mets
83
79
.512
13.0
NL Central W L PCT GB
Brewers Brewers
97
65
.599
Cubs Cubs
92
70
.568
5.0
NL West W L PCT GB
Dodgers Dodgers
93
69
.574
Padres Padres
90
72
.556
3.0
AL East W L PCT GB
Blue Jays Blue Jays
94
68
.580
Yankees Yankees
94
68
.580
AL Central W L PCT GB
Guardians Guardians
88
74
.543
Tigers Tigers
87
75
.537
1.0
AL West W L PCT GB
Mariners Mariners
90
72
.556
Astros Astros
87
75
.537
3.0

MLB 2025 Scores & Schedule

Scores

DATE MATCHUP SCORE
Sat
9/13
PIT PIT
@
WSH WSH
3-4
Sat
9/13
KCR KCR
@
PHI PHI
10-3
Sat
9/13
BAL BAL
@
TOR TOR
2-11
Sat
9/13
TEX TEX
@
NYM NYM
2-5
Sat
9/13
AZ AZ
@
MIN MIN
6-4

Schedule

DATE MATCHUP TIME (ET)
Wed
10/1
DET DET
@
CLE CLE
1:08 PM
Wed
10/1
SDP SDP
@
CHC CHC
3:08 PM
Wed
10/1
BOS BOS
@
NYY NYY
6:08 PM
Wed
10/1
CIN CIN
@
LAD LAD
9:08 PM
Thu
10/2
DET DET
@
CLE CLE
1:08 PM