Jeremy Affeldt vs. Charlie Kerfeld — Career Comparison

Jeremy Affeldt
Gen XArizonaThrows LeftBats LeftNorth AmericaSan Francisco GiantsNational LeagueRelief Pitcher
Charlie Kerfeld
Baby BoomersMissouriThrows RightBats RightNorth AmericaHouston AstrosAmerican LeagueRelief Pitcher

The numbers give Charlie Kerfeld a clear advantage over Jeremy Affeldt across the core pitching metrics. Charlie Kerfeld led in home run suppression (HR9+ 170 vs 118), strikeout rate (K%+ 112 vs 81), and skill-based run prevention (DICE+ 109 vs 89). Jeremy Affeldt held the edge in walk avoidance (BB%+ 87 vs 81). Charlie Kerfeld was the better reliever — the numbers make that case clearly.

Pitching Stats for Jeremy Affeldt and Charlie Kerfeld

Jeremy Affeldt
Careerverified
Per 9 Inningsverified
14
14
Charlie Kerfeld
Career
Per 9 Innings
4
4
Jeremy Affeldt
Careerverified
Per 9 Inningsverified
774
7.52
Charlie Kerfeld
Career
Per 9 Innings
123
5.49
Jeremy Affeldt
Careerverified
Per 9 Inningsverified
42
0.41
Charlie Kerfeld
Career
Per 9 Innings
6
0.27
Jeremy Affeldt
Careerverified
Per 9 Innings
43
0.42
Charlie Kerfeld
Career
Per 9 Inningsverified
18
0.8
Jeremy Affeldt
Career
Per 9 Innings
46
0.45
Charlie Kerfeld
Careerverified
Per 9 Inningsverified
9
0.4
Jeremy Affeldt
Career
Per 9 Innings
48.31
48.31
Charlie Kerfeld
Careerverified
Per 9 Inningsverified
66.67
66.67
Jeremy Affeldt
Careerverified
Per 9 Inningsverified
5.43
5.43
Charlie Kerfeld
Career
Per 9 Innings
4.88
4.88
Jeremy Affeldt
Career
Per 9 Innings
0
0
Charlie Kerfeld
Career
Per 9 Innings
0
0
Jeremy Affeldt
Career
Per 9 Innings
0
0
Charlie Kerfeld
Career
Per 9 Innings
0
0
Jeremy Affeldt
Careerverified
Per 9 Innings
28
0.27
Charlie Kerfeld
Career
Per 9 Inningsverified
9
0.4
Jeremy Affeldt
Career
Per 9 Inningsverified
408
3.97
Charlie Kerfeld
Careerverified
Per 9 Innings
94
4.2
Jeremy Affeldt
Careerverified
Per 9 Inningsverified
3.97
3.97
Charlie Kerfeld
Career
Per 9 Innings
4.2
4.2
Jeremy Affeldt
Careerverified
Per 9 Inningsverified
4.02
4.02
Charlie Kerfeld
Career
Per 9 Innings
4.12
4.12
Jeremy Affeldt
Careerverified
Per 9 Inningsverified
3.93
3.93
Charlie Kerfeld
Career
Per 9 Innings
4.02
4.02
Jeremy Affeldt
Career
Per 9 Innings
0.256
0.256
Charlie Kerfeld
Career
Per 9 Innings
0.256
0.256
Jeremy Affeldt
Careerverified
Per 9 Innings
2778
27
Charlie Kerfeld
Career
Per 9 Innings
605
27
Jeremy Affeldt
Careerverified
Per 9 Innings
926
9
Charlie Kerfeld
Career
Per 9 Innings
201.2
9
Jeremy Affeldt
Career
Per 9 Innings
904
8.79
Charlie Kerfeld
Careerverified
Per 9 Inningsverified
189
8.43
Jeremy Affeldt
Career
Per 9 Innings
8.79
8.79
Charlie Kerfeld
Careerverified
Per 9 Inningsverified
8.43
8.43
Jeremy Affeldt
Career
Per 9 Innings
76
0.74
Charlie Kerfeld
Careerverified
Per 9 Inningsverified
12
0.54
Jeremy Affeldt
Career
Per 9 Innings
0.74
0.74
Charlie Kerfeld
Careerverified
Per 9 Inningsverified
0.54
0.54
Jeremy Affeldt
Career
Per 9 Innings
0.1
0.1
Charlie Kerfeld
Career
Per 9 Innings
0.1
0.1
Jeremy Affeldt
Career
Per 9 Inningsverified
396
3.85
Charlie Kerfeld
Careerverified
Per 9 Innings
117
5.22
Jeremy Affeldt
Career
Per 9 Inningsverified
41
0.4
Charlie Kerfeld
Careerverified
Per 9 Innings
11
0.49
Jeremy Affeldt
Careerverified
Per 9 Inningsverified
3.85
3.85
Charlie Kerfeld
Career
Per 9 Innings
5.22
5.22
Jeremy Affeldt
Careerverified
Per 9 Inningsverified
720
7
Charlie Kerfeld
Career
Per 9 Innings
155
6.92
Jeremy Affeldt
Careerverified
Per 9 Inningsverified
7
7
Charlie Kerfeld
Career
Per 9 Innings
6.92
6.92
Jeremy Affeldt
Career
Per 9 Innings
0.93
0.93
Charlie Kerfeld
Careerverified
Per 9 Inningsverified
1.26
1.26
Jeremy Affeldt
Career
Per 9 Innings
1.205
1.205
Charlie Kerfeld
Careerverified
Per 9 Inningsverified
1.349
1.349
Jeremy Affeldt
Career
Per 9 Innings
55
0.53
Charlie Kerfeld
Careerverified
Per 9 Inningsverified
9
0.4
Jeremy Affeldt
Career
Per 9 Innings
42
0.41
Charlie Kerfeld
Careerverified
Per 9 Inningsverified
3
0.13
Jeremy Affeldt
Career
Per 9 Innings
9
0.09
Charlie Kerfeld
Careerverified
Per 9 Innings
2
0.09
Jeremy Affeldt
Careerverified
Per 9 Innings
4034
39.21
Charlie Kerfeld
Career
Per 9 Inningsverified
888
39.63
Jeremy Affeldt
Careerverified
Per 9 Innings
162
1.57
Charlie Kerfeld
Career
Per 9 Inningsverified
53
2.37
Jeremy Affeldt
Career
Per 9 Inningsverified
455
4.42
Charlie Kerfeld
Careerverified
Per 9 Innings
104
4.64
Jeremy Affeldt
Careerverified
Per 9 Inningsverified
4.42
4.42
Charlie Kerfeld
Career
Per 9 Innings
4.64
4.64
Jeremy Affeldt
Career
Per 9 Inningsverified
42
0.41
Charlie Kerfeld
Careerverified
Per 9 Innings
16
0.71
Jeremy Affeldt
Career
Per 9 Inningsverified
25
0.24
Charlie Kerfeld
Careerverified
Per 9 Innings
13
0.58
Jeremy Affeldt
Careerverified
Per 9 Innings
102
0.99
Charlie Kerfeld
Career
Per 9 Inningsverified
25
1.12
Jeremy Affeldt
Careerverified
Per 9 Inningsverified
1.404
1.404
Charlie Kerfeld
Career
Per 9 Innings
1.517
1.517
Jeremy Affeldt
Careerverified
Per 9 Inningsverified
3529
34.3
Charlie Kerfeld
Career
Per 9 Innings
739
32.98
Jeremy Affeldt
Careerverified
Per 9 Inningsverified
0.59
0.59
Charlie Kerfeld
Career
Per 9 Innings
0.85
0.85
Jeremy Affeldt
Careerverified
Per 9 Inningsverified
0.303
0.303
Charlie Kerfeld
Career
Per 9 Innings
0.309
0.309
Jeremy Affeldt
Career
Per 9 Innings
39.21
39.21
Charlie Kerfeld
Careerverified
Per 9 Inningsverified
39.63
39.63

Fielding Stats for Jeremy Affeldt and Charlie Kerfeld

Jeremy Affeldt
Careerverified
Per 9 Inningsverified
14
14
Charlie Kerfeld
Career
Per 9 Innings
4
4
Jeremy Affeldt
Careerverified
Per 9 Inningsverified
774
7.52
Charlie Kerfeld
Career
Per 9 Innings
123
5.49
Jeremy Affeldt
Careerverified
Per 9 Inningsverified
42
0.41
Charlie Kerfeld
Career
Per 9 Innings
6
0.27
Jeremy Affeldt
Careerverified
Per 9 Innings
2778
27
Charlie Kerfeld
Career
Per 9 Innings
605
27
Jeremy Affeldt
Careerverified
Per 9 Innings
926
9
Charlie Kerfeld
Career
Per 9 Innings
201.2
9
Jeremy Affeldt
Careerverified
Per 9 Innings
45
0.44
Charlie Kerfeld
Career
Per 9 Inningsverified
19
0.85
Jeremy Affeldt
Careerverified
Per 9 Inningsverified
184
1.79
Charlie Kerfeld
Career
Per 9 Innings
16
0.71
Jeremy Affeldt
Career
Per 9 Inningsverified
13
0.13
Charlie Kerfeld
Careerverified
Per 9 Innings
5
0.22
Jeremy Affeldt
Careerverified
Per 9 Inningsverified
242
2.35
Charlie Kerfeld
Career
Per 9 Innings
40
1.79
Jeremy Affeldt
Careerverified
Per 9 Inningsverified
229
2.23
Charlie Kerfeld
Career
Per 9 Innings
35
1.56
Jeremy Affeldt
Careerverified
Per 9 Inningsverified
94.63
94.63
Charlie Kerfeld
Career
Per 9 Innings
87.5
87.5
Jeremy Affeldt
Careerverified
Per 9 Inningsverified
0.296
0.296
Charlie Kerfeld
Career
Per 9 Innings
0.285
0.285
Jeremy Affeldt
Careerverified
Per 9 Inningsverified
5.43
5.43
Charlie Kerfeld
Career
Per 9 Innings
4.88
4.88
Jeremy Affeldt
Careerverified
Per 9 Inningsverified
13
0.13
Charlie Kerfeld
Career
Per 9 Innings
2
0.09
Jeremy Affeldt
Career
Per 9 Innings
0
0
Charlie Kerfeld
Career
Per 9 Innings
0
0
Jeremy Affeldt
Career
Per 9 Innings
0
0
Charlie Kerfeld
Career
Per 9 Innings
0
0
Jeremy Affeldt
Career
Per 9 Innings
0
0
Charlie Kerfeld
Career
Per 9 Innings
0
0
Jeremy Affeldt
Career
Per 9 Innings
0
0
Charlie Kerfeld
Career
Per 9 Innings
0
0

Hitting Stats for Jeremy Affeldt and Charlie Kerfeld

Jeremy Affeldt
Careerverified
Per 600 PAverified
14
14
Charlie Kerfeld
Career
Per 600 PA
4
4
Jeremy Affeldt
Careerverified
Per 600 PAverified
774
24442.11
Charlie Kerfeld
Career
Per 600 PA
123
2544.83
Jeremy Affeldt
Career
Per 600 PA
19
600
Charlie Kerfeld
Careerverified
Per 600 PA
29
600
Jeremy Affeldt
Career
Per 600 PA
17
536.84
Charlie Kerfeld
Careerverified
Per 600 PAverified
26
537.93
Jeremy Affeldt
Careerverified
Per 600 PAverified
0.177
0.177
Charlie Kerfeld
Career
Per 600 PA
0.039
0.039
Jeremy Affeldt
Careerverified
Per 600 PAverified
0.474
0.474
Charlie Kerfeld
Career
Per 600 PA
0.19
0.19
Jeremy Affeldt
Careerverified
Per 600 PAverified
3
94.74
Charlie Kerfeld
Career
Per 600 PA
1
20.69
Jeremy Affeldt
Careerverified
Per 600 PAverified
3
94.74
Charlie Kerfeld
Career
Per 600 PA
1
20.69
Jeremy Affeldt
Career
Per 600 PA
0
0
Charlie Kerfeld
Career
Per 600 PA
0
0
Jeremy Affeldt
Career
Per 600 PA
0
0
Charlie Kerfeld
Career
Per 600 PA
0
0
Jeremy Affeldt
Career
Per 600 PA
0
0
Charlie Kerfeld
Career
Per 600 PA
0
0
Jeremy Affeldt
Career
Per 600 PA
0
0
Charlie Kerfeld
Career
Per 600 PA
0
0
Jeremy Affeldt
Career
Per 600 PA
0
0
Charlie Kerfeld
Career
Per 600 PA
0
0
Jeremy Affeldt
Career
Per 600 PA
0
0
Charlie Kerfeld
Career
Per 600 PA
0
0
Jeremy Affeldt
Career
Per 600 PA
0
0
Charlie Kerfeld
Career
Per 600 PA
0
0
Jeremy Affeldt
Careerverified
Per 600 PAverified
0.85
26.78
Charlie Kerfeld
Career
Per 600 PA
0.08
1.58
Jeremy Affeldt
Careerverified
Per 600 PAverified
3
94.74
Charlie Kerfeld
Career
Per 600 PA
1
20.69
Jeremy Affeldt
Careerverified
Per 600 PAverified
5
157.89
Charlie Kerfeld
Career
Per 600 PA
2
41.38
Jeremy Affeldt
Careerverified
Per 600 PAverified
0.263
0.263
Charlie Kerfeld
Career
Per 600 PA
0.074
0.074
Jeremy Affeldt
Careerverified
Per 600 PAverified
0.177
0.177
Charlie Kerfeld
Career
Per 600 PA
0.039
0.039
Jeremy Affeldt
Careerverified
Per 600 PAverified
0.44
0.44
Charlie Kerfeld
Career
Per 600 PA
0.113
0.113
Jeremy Affeldt
Career
Per 600 PA
0
0
Charlie Kerfeld
Career
Per 600 PA
0
0
Jeremy Affeldt
Careerverified
Per 600 PAverified
0.163
0.163
Charlie Kerfeld
Career
Per 600 PA
0.043
0.043
Jeremy Affeldt
Careerverified
Per 600 PAverified
0.357
0.357
Charlie Kerfeld
Career
Per 600 PA
0.08
0.08
Jeremy Affeldt
Careerverified
Per 600 PAverified
0.273
0.273
Charlie Kerfeld
Career
Per 600 PA
0.1
0.1
Jeremy Affeldt
Career
Per 600 PA
0
0
Charlie Kerfeld
Career
Per 600 PA
0
0
Jeremy Affeldt
Careerverified
Per 600 PAverified
2
63.16
Charlie Kerfeld
Career
Per 600 PA
1
20.69
Jeremy Affeldt
Careerverified
Per 600 PAverified
2
63.16
Charlie Kerfeld
Career
Per 600 PA
1
20.69
Jeremy Affeldt
Careerverified
Per 600 PAverified
0.98
30.85
Charlie Kerfeld
Career
Per 600 PA
-1.72
-35.51
Jeremy Affeldt
Career
Per 600 PA
0
0
Charlie Kerfeld
Career
Per 600 PA
0
0
Jeremy Affeldt
Careerverified
Per 600 PAverified
2
63.16
Charlie Kerfeld
Career
Per 600 PA
1
20.69
Jeremy Affeldt
Career
Per 600 PA
0
0
Charlie Kerfeld
Career
Per 600 PA
0
0
Jeremy Affeldt
Careerverified
Per 600 PAverified
6
189.47
Charlie Kerfeld
Career
Per 600 PA
16
331.03
Jeremy Affeldt
Careerverified
Per 600 PAverified
3.17
3.17
Charlie Kerfeld
Career
Per 600 PA
1.81
1.81
Jeremy Affeldt
Careerverified
Per 600 PAverified
0.33
0.33
Charlie Kerfeld
Career
Per 600 PA
0.06
0.06
Jeremy Affeldt
Career
Per 600 PA
0
0
Charlie Kerfeld
Careerverified
Per 600 PAverified
2
41.38
Jeremy Affeldt
Career
Per 600 PA
0
0
Charlie Kerfeld
Career
Per 600 PA
0
0
Jeremy Affeldt
Career
Per 600 PA
0
0
Charlie Kerfeld
Career
Per 600 PA
0
0
Jeremy Affeldt
Career
Per 600 PA
0
0
Charlie Kerfeld
Career
Per 600 PA
0
0
Jeremy Affeldt
Career
Per 600 PA
0
0
Charlie Kerfeld
Career
Per 600 PA
0
0
Jeremy Affeldt
Career
Per 600 PA
0
0
Charlie Kerfeld
Career
Per 600 PA
0
0
Jeremy Affeldt
Career
Per 600 PA
Charlie Kerfeld
Career
Per 600 PA