Jack Aker vs. Jim Duffalo — Career Comparison

Jack Aker
Silent GenerationCaliforniaThrows RightBats RightNorth AmericaKansas City AthleticsAmerican LeagueRelief Pitcher
Jim Duffalo
Silent GenerationPennsylvaniaThrows RightBats RightNorth AmericaSan Francisco GiantsNational LeagueRelief Pitcher

On the career pitching numbers, Jack Aker posted a stronger line than Jim Duffalo. Jack Aker posted stronger numbers in ERA (3.28 vs 3.39) and WHIP (1.369 vs 1.428). By the career numbers, Jack Aker had the better of this comparison — though ERA and WHIP alone don't account for era, park factors, or the defenses each pitcher worked behind.

Pitching Stats for Jack Aker and Jim Duffalo

Jack Aker
Careerverified
Per 9 Inningsverified
11
11
Jim Duffalo
Career
Per 9 Innings
5
5
Jack Aker
Careerverified
Per 9 Inningsverified
495
5.97
Jim Duffalo
Career
Per 9 Innings
141
4.26
Jack Aker
Career
Per 9 Innings
0
0
Jim Duffalo
Careerverified
Per 9 Inningsverified
14
0.42
Jack Aker
Careerverified
Per 9 Inningsverified
47
0.57
Jim Duffalo
Career
Per 9 Innings
15
0.45
Jack Aker
Career
Per 9 Innings
45
0.54
Jim Duffalo
Careerverified
Per 9 Inningsverified
8
0.24
Jack Aker
Career
Per 9 Innings
51.09
51.09
Jim Duffalo
Careerverified
Per 9 Inningsverified
65.22
65.22
Jack Aker
Career
Per 9 Innings
0
0
Jim Duffalo
Careerverified
Per 9 Inningsverified
9.93
9.93
Jack Aker
Career
Per 9 Innings
0
0
Jim Duffalo
Careerverified
Per 9 Inningsverified
2
0.06
Jack Aker
Career
Per 9 Innings
0
0
Jim Duffalo
Career
Per 9 Innings
0
0
Jack Aker
Careerverified
Per 9 Inningsverified
123
1.48
Jim Duffalo
Career
Per 9 Innings
6
0.18
Jack Aker
Career
Per 9 Inningsverified
272
3.28
Jim Duffalo
Careerverified
Per 9 Innings
112
3.39
Jack Aker
Careerverified
Per 9 Inningsverified
3.28
3.28
Jim Duffalo
Career
Per 9 Innings
3.39
3.39
Jack Aker
Careerverified
Per 9 Inningsverified
3.45
3.45
Jim Duffalo
Career
Per 9 Innings
3.56
3.56
Jack Aker
Careerverified
Per 9 Inningsverified
4.29
4.29
Jim Duffalo
Career
Per 9 Innings
4.44
4.44
Jack Aker
Career
Per 9 Innings
0.244
0.244
Jim Duffalo
Careerverified
Per 9 Inningsverified
0.221
0.221
Jack Aker
Careerverified
Per 9 Innings
2238
27
Jim Duffalo
Career
Per 9 Innings
893
27
Jack Aker
Careerverified
Per 9 Innings
746
9
Jim Duffalo
Career
Per 9 Innings
297.2
9
Jack Aker
Career
Per 9 Innings
679
8.19
Jim Duffalo
Careerverified
Per 9 Inningsverified
248
7.5
Jack Aker
Career
Per 9 Innings
8.19
8.19
Jim Duffalo
Careerverified
Per 9 Inningsverified
7.5
7.5
Jack Aker
Career
Per 9 Inningsverified
64
0.77
Jim Duffalo
Careerverified
Per 9 Innings
27
0.82
Jack Aker
Careerverified
Per 9 Inningsverified
0.77
0.77
Jim Duffalo
Career
Per 9 Innings
0.82
0.82
Jack Aker
Careerverified
Per 9 Inningsverified
0.13
0.13
Jim Duffalo
Career
Per 9 Innings
0.19
0.19
Jack Aker
Career
Per 9 Inningsverified
274
3.31
Jim Duffalo
Careerverified
Per 9 Innings
155
4.69
Jack Aker
Career
Per 9 Innings
68
0.82
Jim Duffalo
Careerverified
Per 9 Inningsverified
22
0.67
Jack Aker
Careerverified
Per 9 Inningsverified
3.31
3.31
Jim Duffalo
Career
Per 9 Innings
4.69
4.69
Jack Aker
Careerverified
Per 9 Innings
404
4.87
Jim Duffalo
Career
Per 9 Inningsverified
210
6.35
Jack Aker
Career
Per 9 Innings
4.87
4.87
Jim Duffalo
Careerverified
Per 9 Inningsverified
6.35
6.35
Jack Aker
Career
Per 9 Innings
0.82
0.82
Jim Duffalo
Careerverified
Per 9 Inningsverified
1.49
1.49
Jack Aker
Career
Per 9 Innings
0.909
0.909
Jim Duffalo
Careerverified
Per 9 Inningsverified
1.226
1.226
Jack Aker
Career
Per 9 Inningsverified
13
0.16
Jim Duffalo
Careerverified
Per 9 Innings
12
0.36
Jack Aker
Career
Per 9 Innings
40
0.48
Jim Duffalo
Careerverified
Per 9 Inningsverified
11
0.33
Jack Aker
Career
Per 9 Innings
0
0
Jim Duffalo
Career
Per 9 Innings
0
0
Jack Aker
Careerverified
Per 9 Innings
3144
37.93
Jim Duffalo
Career
Per 9 Inningsverified
1288
38.94
Jack Aker
Careerverified
Per 9 Inningsverified
321
3.87
Jim Duffalo
Career
Per 9 Innings
54
1.63
Jack Aker
Career
Per 9 Inningsverified
312
3.76
Jim Duffalo
Careerverified
Per 9 Innings
131
3.96
Jack Aker
Careerverified
Per 9 Inningsverified
3.76
3.76
Jim Duffalo
Career
Per 9 Innings
3.96
3.96
Jack Aker
Career
Per 9 Innings
32
0.39
Jim Duffalo
Careerverified
Per 9 Inningsverified
0
0
Jack Aker
Career
Per 9 Innings
12
0.14
Jim Duffalo
Careerverified
Per 9 Inningsverified
0
0
Jack Aker
Careerverified
Per 9 Inningsverified
19
0.23
Jim Duffalo
Career
Per 9 Innings
0
0
Jack Aker
Careerverified
Per 9 Inningsverified
1.278
1.278
Jim Duffalo
Career
Per 9 Innings
1.354
1.354
Jack Aker
Careerverified
Per 9 Innings
2786
33.61
Jim Duffalo
Career
Per 9 Inningsverified
1122
33.92
Jack Aker
Careerverified
Per 9 Inningsverified
0.63
0.63
Jim Duffalo
Career
Per 9 Innings
0.93
0.93
Jack Aker
Career
Per 9 Innings
0.265
0.265
Jim Duffalo
Careerverified
Per 9 Inningsverified
0.25
0.25
Jack Aker
Career
Per 9 Innings
37.93
37.93
Jim Duffalo
Careerverified
Per 9 Inningsverified
38.94
38.94

Fielding Stats for Jack Aker and Jim Duffalo

Jack Aker
Careerverified
Per 9 Inningsverified
11
11
Jim Duffalo
Career
Per 9 Innings
5
5
Jack Aker
Careerverified
Per 9 Inningsverified
495
5.97
Jim Duffalo
Career
Per 9 Innings
141
4.26
Jack Aker
Career
Per 9 Innings
0
0
Jim Duffalo
Careerverified
Per 9 Inningsverified
14
0.42
Jack Aker
Careerverified
Per 9 Innings
2240
27
Jim Duffalo
Career
Per 9 Innings
893
27
Jack Aker
Careerverified
Per 9 Innings
746.2
9
Jim Duffalo
Career
Per 9 Innings
297.2
9
Jack Aker
Careerverified
Per 9 Inningsverified
65
0.78
Jim Duffalo
Career
Per 9 Innings
19
0.57
Jack Aker
Careerverified
Per 9 Inningsverified
167
2.01
Jim Duffalo
Career
Per 9 Innings
46
1.39
Jack Aker
Career
Per 9 Innings
8
0.1
Jim Duffalo
Careerverified
Per 9 Inningsverified
3
0.09
Jack Aker
Careerverified
Per 9 Inningsverified
240
2.89
Jim Duffalo
Career
Per 9 Innings
68
2.06
Jack Aker
Careerverified
Per 9 Inningsverified
232
2.8
Jim Duffalo
Career
Per 9 Innings
65
1.97
Jack Aker
Careerverified
Per 9 Inningsverified
96.67
96.67
Jim Duffalo
Career
Per 9 Innings
95.59
95.59
Jack Aker
Careerverified
Per 9 Inningsverified
0.469
0.469
Jim Duffalo
Career
Per 9 Innings
0.461
0.461
Jack Aker
Career
Per 9 Innings
0
0
Jim Duffalo
Careerverified
Per 9 Inningsverified
9.93
9.93
Jack Aker
Careerverified
Per 9 Inningsverified
20
0.24
Jim Duffalo
Career
Per 9 Innings
2
0.06
Jack Aker
Career
Per 9 Innings
0
0
Jim Duffalo
Career
Per 9 Innings
0
0
Jack Aker
Career
Per 9 Innings
0
0
Jim Duffalo
Career
Per 9 Innings
0
0
Jack Aker
Career
Per 9 Innings
0
0
Jim Duffalo
Career
Per 9 Innings
0
0
Jack Aker
Career
Per 9 Innings
0
0
Jim Duffalo
Career
Per 9 Innings
0
0

Hitting Stats for Jack Aker and Jim Duffalo

Jack Aker
Careerverified
Per 600 PAverified
11
11
Jim Duffalo
Career
Per 600 PA
5
5
Jack Aker
Careerverified
Per 600 PAverified
496
2861.54
Jim Duffalo
Career
Per 600 PA
142
1252.94
Jack Aker
Careerverified
Per 600 PA
104
600
Jim Duffalo
Career
Per 600 PA
68
600
Jack Aker
Careerverified
Per 600 PA
92
530.77
Jim Duffalo
Career
Per 600 PAverified
63
555.88
Jack Aker
Career
Per 600 PA
0.076
0.076
Jim Duffalo
Careerverified
Per 600 PAverified
0.127
0.127
Jack Aker
Career
Per 600 PA
0.279
0.279
Jim Duffalo
Careerverified
Per 600 PAverified
0.404
0.404
Jack Aker
Career
Per 600 PA
7
40.38
Jim Duffalo
Careerverified
Per 600 PAverified
8
70.59
Jack Aker
Career
Per 600 PA
5
28.85
Jim Duffalo
Career
Per 600 PAverified
5
44.12
Jack Aker
Career
Per 600 PA
2
11.54
Jim Duffalo
Career
Per 600 PAverified
2
17.65
Jack Aker
Career
Per 600 PA
0
0
Jim Duffalo
Career
Per 600 PA
0
0
Jack Aker
Career
Per 600 PA
0
0
Jim Duffalo
Careerverified
Per 600 PAverified
1
8.82
Jack Aker
Career
Per 600 PA
2
11.54
Jim Duffalo
Careerverified
Per 600 PAverified
3
26.47
Jack Aker
Career
Per 600 PA
0.286
0.286
Jim Duffalo
Careerverified
Per 600 PAverified
0.375
0.375
Jack Aker
Career
Per 600 PA
0
0
Jim Duffalo
Careerverified
Per 600 PAverified
0.016
0.016
Jack Aker
Career
Per 600 PA
0
0
Jim Duffalo
Careerverified
Per 600 PAverified
0.125
0.125
Jack Aker
Career
Per 600 PA
0.81
4.66
Jim Duffalo
Careerverified
Per 600 PAverified
2.61
23.07
Jack Aker
Career
Per 600 PA
9
51.92
Jim Duffalo
Careerverified
Per 600 PAverified
13
114.71
Jack Aker
Career
Per 600 PA
9
51.92
Jim Duffalo
Careerverified
Per 600 PAverified
11
97.06
Jack Aker
Career
Per 600 PA
0.096
0.096
Jim Duffalo
Careerverified
Per 600 PAverified
0.167
0.167
Jack Aker
Career
Per 600 PA
0.098
0.098
Jim Duffalo
Careerverified
Per 600 PAverified
0.206
0.206
Jack Aker
Career
Per 600 PA
0.194
0.194
Jim Duffalo
Careerverified
Per 600 PAverified
0.373
0.373
Jack Aker
Career
Per 600 PA
0.022
0.022
Jim Duffalo
Careerverified
Per 600 PAverified
0.079
0.079
Jack Aker
Career
Per 600 PA
0.068
0.068
Jim Duffalo
Careerverified
Per 600 PAverified
0.127
0.127
Jack Aker
Career
Per 600 PA
0.128
0.128
Jim Duffalo
Careerverified
Per 600 PAverified
0.286
0.286
Jack Aker
Career
Per 600 PA
0.171
0.171
Jim Duffalo
Careerverified
Per 600 PAverified
0.206
0.206
Jack Aker
Career
Per 600 PA
3
17.31
Jim Duffalo
Career
Per 600 PAverified
3
26.47
Jack Aker
Career
Per 600 PA
4
23.08
Jim Duffalo
Careerverified
Per 600 PAverified
5
44.12
Jack Aker
Career
Per 600 PA
7
40.38
Jim Duffalo
Career
Per 600 PAverified
7
61.76
Jack Aker
Career
Per 600 PA
-4.13
-23.83
Jim Duffalo
Careerverified
Per 600 PAverified
0.52
4.61
Jack Aker
Career
Per 600 PA
1
5.77
Jim Duffalo
Career
Per 600 PAverified
1
8.82
Jack Aker
Career
Per 600 PA
1
5.77
Jim Duffalo
Careerverified
Per 600 PAverified
2
17.65
Jack Aker
Career
Per 600 PA
0
0
Jim Duffalo
Career
Per 600 PA
0
0
Jack Aker
Career
Per 600 PA
51
294.23
Jim Duffalo
Careerverified
Per 600 PAverified
28
247.06
Jack Aker
Career
Per 600 PA
2.04
2.04
Jim Duffalo
Careerverified
Per 600 PAverified
2.43
2.43
Jack Aker
Career
Per 600 PA
0.02
0.02
Jim Duffalo
Careerverified
Per 600 PAverified
0.07
0.07
Jack Aker
Careerverified
Per 600 PAverified
10
57.69
Jim Duffalo
Career
Per 600 PA
2
17.65
Jack Aker
Career
Per 600 PA
0
0
Jim Duffalo
Career
Per 600 PA
0
0
Jack Aker
Career
Per 600 PAverified
1
5.77
Jim Duffalo
Career
Per 600 PA
1
8.82
Jack Aker
Career
Per 600 PA
0
0
Jim Duffalo
Career
Per 600 PA
0
0
Jack Aker
Career
Per 600 PA
0
0
Jim Duffalo
Career
Per 600 PA
0
0
Jack Aker
Career
Per 600 PA
0
0
Jim Duffalo
Career
Per 600 PA
0
0
Jack Aker
Career
Per 600 PA
Jim Duffalo
Career
Per 600 PA