most strikeouts by a reliever in a season

Dick Radatz has fanned the most hitters by a relief pitcher in a season, with 183 strikeouts in 1964.

NAME SO SEASON TM G W L W% GS ERA CG SHO SV IP H ER R HR BB HBP GF IBB TBF WP K/9 BB/9 K/BB HR/9 K% BB% WHIP BABIP RA H/9
1 Dick Radatz
D. Radatz
183
1964
BOS BOS
79
16
9
.640
0
2.29
0
0
29
157.0
103
40
44
13
58
7
67
9
634
1
10.49
3.32
3.16
0.75
28.9
9.1
1.03
.241
2.52
5.90
2 Mark Eichhorn
M. Eichhorn
166
1986
TOR TOR
69
14
6
.700
0
1.72
0
0
10
157.0
105
30
32
8
45
7
38
14
612
2
9.52
2.58
3.69
0.46
27.1
7.4
0.96
.251
1.83
6.02
3 Dick Radatz
D. Radatz
162
1963
BOS BOS
66
15
6
.714
0
2.04
0
0
23
132.1
94
30
31
9
51
5
58
12
541
5
11.02
3.47
3.18
0.61
29.9
9.4
1.10
.271
2.11
6.39
4 Brad Lidge
B. Lidge
157
2004
HOU HOU
80
6
5
.545
0
1.90
0
0
29
94.2
57
20
21
8
30
6
44
5
369
3
14.93
2.85
5.23
0.76
42.5
8.1
0.92
.292
2.00
5.42
5 Dick Selma
D. Selma
153
1970
PHI PHI
73
8
9
.471
0
2.75
0
0
22
134.1
108
41
42
8
59
4
47
9
553
10
10.25
3.95
2.59
0.54
27.7
10.7
1.24
.304
2.81
7.24
6 Rich Gossage
R. Gossage
151
1977
PIT PIT
72
11
9
.550
0
1.62
0
0
26
133.0
78
24
27
9
49
2
55
6
523
2
10.22
3.32
3.08
0.61
28.9
9.4
0.95
.221
1.83
5.28
7 Dick Radatz
D. Radatz
144
1962
BOS BOS
62
9
6
.600
0
2.24
0
0
24
124.2
95
31
32
9
40
4
53
2
504
3
10.40
2.89
3.60
0.65
28.6
7.9
1.08
.280
2.31
6.86
8 Josh Hader
J. Hader
143
2018
MIL MIL
55
6
1
.857
0
2.43
0
0
12
81.1
36
22
23
9
30
1
14
0
306
0
15.82
3.32
4.77
1.00
46.7
9.8
0.81
.220
2.55
3.98
9 Mike Marshall
M. Marshall
143
1974
LAD LAD
106
15
12
.556
0
2.42
0
0
21
208.1
191
56
66
9
56
1
83
1
857
5
6.18
2.42
2.55
0.39
16.7
6.5
1.19
.281
2.85
8.25
10 Rob Dibble
R. Dibble
141
1989
CIN CIN
74
10
5
.667
0
2.09
0
0
2
99.0
62
23
23
4
39
3
18
11
401
7
12.82
3.55
3.62
0.36
35.2
9.7
1.02
.271
2.09
5.64
11 Josh Hader
J. Hader
138
2019
MIL MIL
61
3
5
.375
0
2.62
0
0
37
75.2
41
22
24
15
20
4
46
2
289
0
16.41
2.38
6.90
1.78
47.8
6.9
0.81
.232
2.85
4.88
12 Carlos Marmol
C. Marmol
138
2010
CHC CHC
77
2
3
.400
0
2.55
0
0
38
77.2
40
22
23
1
52
8
70
4
332
2
15.99
6.03
2.65
0.12
41.6
15.7
1.18
.293
2.67
4.64
13 Eric Gagne
E. Gagne
137
2003
LAD LAD
77
2
3
.400
0
1.20
0
0
55
82.1
37
11
12
2
20
3
67
2
306
2
14.98
2.19
6.85
0.22
44.8
6.5
0.69
.243
1.31
4.04
14 Rob Dibble
R. Dibble
136
1990
CIN CIN
68
8
3
.727
0
1.74
0
0
11
98.0
62
19
22
3
34
1
29
3
384
3
12.49
3.12
4.00
0.28
35.4
8.9
0.98
.281
2.02
5.69
15 Jim Kern
J. Kern
136
1979
TEX TEX
71
13
5
.722
0
1.57
0
0
29
143.0
99
25
35
5
62
2
57
6
578
5
8.56
3.90
2.19
0.31
23.5
10.7
1.13
.252
2.20
6.23
16 Dellin Betances
D. Betances
135
2014
NYY NYY
70
5
0
1.000
0
1.40
0
0
1
90.0
46
14
15
4
24
4
8
1
341
2
13.50
2.40
5.63
0.40
39.6
7.0
0.78
.241
1.50
4.60
17 John Hiller
J. Hiller
134
1974
DET DET
59
17
14
.548
0
2.64
0
0
13
150.0
127
44
51
10
62
3
52
19
633
7
8.04
3.72
2.16
0.60
21.2
9.8
1.26
.276
3.06
7.62
18 Duane Ward
D. Ward
132
1991
TOR TOR
81
7
6
.538
0
2.77
0
0
23
107.1
80
33
36
3
33
2
46
3
428
6
11.07
2.77
4.00
0.25
30.8
7.7
1.05
.298
3.02
6.71
19 Dellin Betances
D. Betances
131
2015
NYY NYY
74
6
4
.600
0
1.50
0
0
9
84.0
45
14
17
6
40
3
17
2
332
9
14.04
4.29
3.28
0.64
39.5
12.0
1.01
.257
1.82
4.82
20 Mariano Rivera
M. Rivera
130
1996
NYY NYY
61
8
3
.727
0
2.09
0
0
5
107.2
73
25
25
1
34
2
14
3
425
1
10.87
2.84
3.82
0.08
30.6
8.0
0.99
.279
2.09
6.10
21 Rich Gossage
R. Gossage
130
1975
CWS CWS
62
9
8
.529
0
1.84
0
0
26
141.2
99
29
32
3
70
5
49
15
583
3
8.26
4.45
1.86
0.19
22.3
12.0
1.19
.256
2.03
6.29
22 Bruce Sutter
B. Sutter
129
1977
CHC CHC
62
7
3
.700
0
1.34
0
0
31
107.1
69
16
21
5
23
1
48
7
411
7
10.82
1.93
5.61
0.42
31.4
5.6
0.86
.253
1.76
5.79
23 Octavio Dotel
O. Dotel
128
2001
HOU HOU
57
6
3
.667
0
1.93
0
0
2
84.0
55
18
21
3
33
2
20
1
339
4
13.71
3.54
3.88
0.32
37.8
9.7
1.05
.301
2.25
5.89
24 Armando Benitez
A. Benitez
128
1999
NYM NYM
77
4
3
.571
0
1.85
0
0
22
78.0
40
16
17
4
41
0
42
4
312
2
14.77
4.73
3.12
0.46
41.0
13.1
1.04
.259
1.96
4.62
25 Scott Garrelts
S. Garrelts
128
1987
SFG SFG
64
11
7
.611
0
3.22
0
0
12
106.1
70
38
41
10
55
0
43
4
428
5
10.83
4.66
2.33
0.85
29.9
12.9
1.18
.255
3.47
5.92
StatMuse has game-level data for strikeouts going back to the 1901 season.
Some of the information used here was obtained free of charge from Retrosheet.

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HR

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R

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SO

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ERA

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2025 Division Standings
TEAM W L PCT GB
Yankees Yankees
94
68
.580
Blue Jays Blue Jays
94
68
.580
Red Sox Red Sox
89
73
.549
5.0
Rays Rays
77
85
.475
17.0
Orioles Orioles
75
87
.463
19.0
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Thu 2 Oct 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
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Yankees Yankees
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AL Central W L PCT GB
Guardians Guardians
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AL West W L PCT GB
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Astros Astros
87
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3.0

MLB 2025 Scores & Schedule

Scores

DATE MATCHUP SCORE
Mon
9/15
ATL ATL
@
WSH WSH
6-3
Mon
9/15
SDP SDP
@
NYM NYM
3-8
Mon
9/15
NYY NYY
@
MIN MIN
10-9
Tue
9/16
CHC CHC
@
PIT PIT
8-4
Tue
9/16
CIN CIN
@
STL STL
6-2

Schedule

DATE MATCHUP TIME (ET)
Fri
10/17
TOR TOR
@
SEA SEA
6:08 PM
Fri
10/17
MIL MIL
@
LAD LAD
8:38 PM
Sat
10/18
MIL MIL
@
LAD LAD
8:08 PM
Sun
10/19
SEA SEA
@
TOR TOR
8:03 PM
Mon
10/20
LAD LAD
@
MIL MIL
5:08 PM