Jack Aker vs. Kei Igawa — Career Comparison

Jack Aker
Silent GenerationCaliforniaThrows RightBats RightNorth AmericaKansas City AthleticsAmerican LeagueRelief Pitcher
Kei Igawa
Gen XJapanThrows LeftBats LeftAsiaNew York YankeesAmerican LeagueStarting Pitcher

Kei Igawa built a career as a starting pitcher and Jack Aker as a reliever — different jobs with different demands — but on the metrics that apply to both, a comparison is still worth making. Jack Aker posted stronger surface numbers — ERA 3.28 and WHIP 1.369 compared to 6.66 and 1.772 for Kei Igawa. By the career numbers, Jack Aker had the better of this cross-role comparison — though era context would sharpen the verdict.

Pitching Stats for Jack Aker and Kei Igawa

Jack Aker
Careerverified
Per 9 Inningsverified
11
11
Kei Igawa
Career
Per 9 Innings
2
2
Jack Aker
Careerverified
Per 9 Inningsverified
495
5.97
Kei Igawa
Career
Per 9 Innings
16
2.01
Jack Aker
Career
Per 9 Innings
0
0
Kei Igawa
Careerverified
Per 9 Inningsverified
13
1.63
Jack Aker
Careerverified
Per 9 Inningsverified
47
0.57
Kei Igawa
Career
Per 9 Innings
2
0.25
Jack Aker
Career
Per 9 Innings
45
0.54
Kei Igawa
Careerverified
Per 9 Inningsverified
4
0.5
Jack Aker
Careerverified
Per 9 Inningsverified
51.09
51.09
Kei Igawa
Career
Per 9 Innings
33.33
33.33
Jack Aker
Career
Per 9 Innings
0
0
Kei Igawa
Careerverified
Per 9 Inningsverified
81.25
81.25
Jack Aker
Career
Per 9 Innings
0
0
Kei Igawa
Career
Per 9 Innings
0
0
Jack Aker
Career
Per 9 Innings
0
0
Kei Igawa
Career
Per 9 Innings
0
0
Jack Aker
Careerverified
Per 9 Inningsverified
123
1.48
Kei Igawa
Career
Per 9 Innings
0
0
Jack Aker
Career
Per 9 Inningsverified
272
3.28
Kei Igawa
Careerverified
Per 9 Innings
53
6.66
Jack Aker
Careerverified
Per 9 Inningsverified
3.28
3.28
Kei Igawa
Career
Per 9 Innings
6.66
6.66
Jack Aker
Careerverified
Per 9 Inningsverified
3.45
3.45
Kei Igawa
Career
Per 9 Innings
7.12
7.12
Jack Aker
Careerverified
Per 9 Inningsverified
4.29
4.29
Kei Igawa
Career
Per 9 Innings
5.96
5.96
Jack Aker
Careerverified
Per 9 Inningsverified
0.244
0.244
Kei Igawa
Career
Per 9 Innings
0.302
0.302
Jack Aker
Careerverified
Per 9 Innings
2238
27
Kei Igawa
Career
Per 9 Innings
215
27
Jack Aker
Careerverified
Per 9 Innings
746
9
Kei Igawa
Career
Per 9 Innings
71.2
9
Jack Aker
Career
Per 9 Inningsverified
679
8.19
Kei Igawa
Careerverified
Per 9 Innings
89
11.18
Jack Aker
Careerverified
Per 9 Inningsverified
8.19
8.19
Kei Igawa
Career
Per 9 Innings
11.18
11.18
Jack Aker
Career
Per 9 Inningsverified
64
0.77
Kei Igawa
Careerverified
Per 9 Innings
15
1.88
Jack Aker
Careerverified
Per 9 Inningsverified
0.77
0.77
Kei Igawa
Career
Per 9 Innings
1.88
1.88
Jack Aker
Careerverified
Per 9 Inningsverified
0.13
0.13
Kei Igawa
Career
Per 9 Innings
0.94
0.94
Jack Aker
Career
Per 9 Inningsverified
274
3.31
Kei Igawa
Careerverified
Per 9 Innings
37
4.65
Jack Aker
Career
Per 9 Innings
68
0.82
Kei Igawa
Careerverified
Per 9 Inningsverified
1
0.13
Jack Aker
Careerverified
Per 9 Inningsverified
3.31
3.31
Kei Igawa
Career
Per 9 Innings
4.65
4.65
Jack Aker
Careerverified
Per 9 Innings
404
4.87
Kei Igawa
Career
Per 9 Inningsverified
53
6.66
Jack Aker
Career
Per 9 Innings
4.87
4.87
Kei Igawa
Careerverified
Per 9 Inningsverified
6.66
6.66
Jack Aker
Career
Per 9 Innings
0.82
0.82
Kei Igawa
Careerverified
Per 9 Inningsverified
3.31
3.31
Jack Aker
Career
Per 9 Innings
0.909
0.909
Kei Igawa
Careerverified
Per 9 Inningsverified
1.256
1.256
Jack Aker
Career
Per 9 Inningsverified
13
0.16
Kei Igawa
Careerverified
Per 9 Innings
5
0.63
Jack Aker
Career
Per 9 Inningsverified
40
0.48
Kei Igawa
Careerverified
Per 9 Innings
4
0.5
Jack Aker
Careerverified
Per 9 Inningsverified
0
0
Kei Igawa
Career
Per 9 Innings
1
0.13
Jack Aker
Careerverified
Per 9 Innings
3144
37.93
Kei Igawa
Career
Per 9 Inningsverified
337
42.32
Jack Aker
Careerverified
Per 9 Inningsverified
321
3.87
Kei Igawa
Career
Per 9 Innings
1
0.13
Jack Aker
Career
Per 9 Inningsverified
312
3.76
Kei Igawa
Careerverified
Per 9 Innings
54
6.78
Jack Aker
Careerverified
Per 9 Inningsverified
3.76
3.76
Kei Igawa
Career
Per 9 Innings
6.78
6.78
Jack Aker
Career
Per 9 Innings
32
0.39
Kei Igawa
Careerverified
Per 9 Inningsverified
0
0
Jack Aker
Career
Per 9 Innings
12
0.14
Kei Igawa
Careerverified
Per 9 Inningsverified
1
0.13
Jack Aker
Careerverified
Per 9 Innings
19
0.23
Kei Igawa
Career
Per 9 Inningsverified
7
0.88
Jack Aker
Careerverified
Per 9 Inningsverified
1.278
1.278
Kei Igawa
Career
Per 9 Innings
1.758
1.758
Jack Aker
Careerverified
Per 9 Innings
2786
33.61
Kei Igawa
Career
Per 9 Inningsverified
295
37.05
Jack Aker
Careerverified
Per 9 Inningsverified
0.63
0.63
Kei Igawa
Career
Per 9 Innings
3.38
3.38
Jack Aker
Careerverified
Per 9 Inningsverified
0.265
0.265
Kei Igawa
Career
Per 9 Innings
0.326
0.326
Jack Aker
Career
Per 9 Innings
37.93
37.93
Kei Igawa
Careerverified
Per 9 Inningsverified
42.32
42.32

Fielding Stats for Jack Aker and Kei Igawa

Jack Aker
Careerverified
Per 9 Inningsverified
11
11
Kei Igawa
Career
Per 9 Innings
2
2
Jack Aker
Careerverified
Per 9 Inningsverified
495
5.97
Kei Igawa
Career
Per 9 Innings
16
2.01
Jack Aker
Career
Per 9 Innings
0
0
Kei Igawa
Careerverified
Per 9 Inningsverified
13
1.63
Jack Aker
Careerverified
Per 9 Innings
2240
27
Kei Igawa
Career
Per 9 Innings
215
27
Jack Aker
Careerverified
Per 9 Innings
746.2
9
Kei Igawa
Career
Per 9 Innings
71.2
9
Jack Aker
Careerverified
Per 9 Inningsverified
65
0.78
Kei Igawa
Career
Per 9 Innings
1
0.13
Jack Aker
Careerverified
Per 9 Inningsverified
167
2.01
Kei Igawa
Career
Per 9 Innings
4
0.5
Jack Aker
Career
Per 9 Inningsverified
8
0.1
Kei Igawa
Careerverified
Per 9 Innings
1
0.13
Jack Aker
Careerverified
Per 9 Inningsverified
240
2.89
Kei Igawa
Career
Per 9 Innings
6
0.75
Jack Aker
Careerverified
Per 9 Inningsverified
232
2.8
Kei Igawa
Career
Per 9 Innings
5
0.63
Jack Aker
Careerverified
Per 9 Inningsverified
96.67
96.67
Kei Igawa
Career
Per 9 Innings
83.33
83.33
Jack Aker
Careerverified
Per 9 Inningsverified
0.469
0.469
Kei Igawa
Career
Per 9 Innings
0.313
0.313
Jack Aker
Career
Per 9 Innings
0
0
Kei Igawa
Careerverified
Per 9 Inningsverified
81.25
81.25
Jack Aker
Careerverified
Per 9 Inningsverified
20
0.24
Kei Igawa
Career
Per 9 Innings
1
0.13
Jack Aker
Career
Per 9 Innings
0
0
Kei Igawa
Career
Per 9 Innings
0
0
Jack Aker
Career
Per 9 Innings
0
0
Kei Igawa
Career
Per 9 Innings
0
0
Jack Aker
Career
Per 9 Innings
0
0
Kei Igawa
Career
Per 9 Innings
0
0
Jack Aker
Career
Per 9 Innings
0
0
Kei Igawa
Career
Per 9 Innings
0
0

Hitting Stats for Jack Aker and Kei Igawa

Jack Aker
Careerverified
Per 600 PAverified
11
11
Kei Igawa
Career
Per 600 PA
2
2
Jack Aker
Careerverified
Per 600 PA
496
2861.54
Kei Igawa
Career
Per 600 PAverified
16
4800
Jack Aker
Careerverified
Per 600 PA
104
600
Kei Igawa
Career
Per 600 PA
2
600
Jack Aker
Careerverified
Per 600 PAverified
92
530.77
Kei Igawa
Career
Per 600 PA
0
0
Jack Aker
Careerverified
Per 600 PAverified
0.076
0.076
Kei Igawa
Career
Per 600 PA
Jack Aker
Career
Per 600 PA
0.279
0.279
Kei Igawa
Careerverified
Per 600 PAverified
1.25
1.25
Jack Aker
Careerverified
Per 600 PAverified
7
40.38
Kei Igawa
Career
Per 600 PA
0
0
Jack Aker
Careerverified
Per 600 PAverified
5
28.85
Kei Igawa
Career
Per 600 PA
0
0
Jack Aker
Careerverified
Per 600 PAverified
2
11.54
Kei Igawa
Career
Per 600 PA
0
0
Jack Aker
Career
Per 600 PA
0
0
Kei Igawa
Career
Per 600 PA
0
0
Jack Aker
Career
Per 600 PA
0
0
Kei Igawa
Career
Per 600 PA
0
0
Jack Aker
Careerverified
Per 600 PAverified
2
11.54
Kei Igawa
Career
Per 600 PA
0
0
Jack Aker
Careerverified
Per 600 PAverified
0.286
0.286
Kei Igawa
Career
Per 600 PA
Jack Aker
Career
Per 600 PA
0
0
Kei Igawa
Career
Per 600 PA
Jack Aker
Career
Per 600 PA
0
0
Kei Igawa
Career
Per 600 PA
Jack Aker
Career
Per 600 PA
0.81
4.66
Kei Igawa
Careerverified
Per 600 PAverified
1
300
Jack Aker
Careerverified
Per 600 PAverified
9
51.92
Kei Igawa
Career
Per 600 PA
0
0
Jack Aker
Careerverified
Per 600 PA
9
51.92
Kei Igawa
Career
Per 600 PAverified
1
300
Jack Aker
Career
Per 600 PA
0.096
0.096
Kei Igawa
Careerverified
Per 600 PAverified
1
1
Jack Aker
Careerverified
Per 600 PAverified
0.098
0.098
Kei Igawa
Career
Per 600 PA
Jack Aker
Careerverified
Per 600 PAverified
0.194
0.194
Kei Igawa
Career
Per 600 PA
Jack Aker
Careerverified
Per 600 PAverified
0.022
0.022
Kei Igawa
Career
Per 600 PA
Jack Aker
Careerverified
Per 600 PAverified
0.068
0.068
Kei Igawa
Career
Per 600 PA
Jack Aker
Careerverified
Per 600 PAverified
0.128
0.128
Kei Igawa
Career
Per 600 PA
Jack Aker
Careerverified
Per 600 PAverified
0.171
0.171
Kei Igawa
Career
Per 600 PA
Jack Aker
Careerverified
Per 600 PAverified
3
17.31
Kei Igawa
Career
Per 600 PA
0
0
Jack Aker
Careerverified
Per 600 PAverified
4
23.08
Kei Igawa
Career
Per 600 PA
0
0
Jack Aker
Careerverified
Per 600 PAverified
7
40.38
Kei Igawa
Career
Per 600 PA
0
0
Jack Aker
Career
Per 600 PA
-4.13
-23.83
Kei Igawa
Careerverified
Per 600 PAverified
0.39
115.59
Jack Aker
Careerverified
Per 600 PAverified
1
5.77
Kei Igawa
Career
Per 600 PA
0
0
Jack Aker
Career
Per 600 PA
1
5.77
Kei Igawa
Career
Per 600 PAverified
1
300
Jack Aker
Career
Per 600 PA
0
0
Kei Igawa
Career
Per 600 PA
0
0
Jack Aker
Career
Per 600 PA
51
294.23
Kei Igawa
Careerverified
Per 600 PAverified
0
0
Jack Aker
Careerverified
Per 600 PAverified
2.04
2.04
Kei Igawa
Career
Per 600 PA
Jack Aker
Careerverified
Per 600 PAverified
0.02
0.02
Kei Igawa
Career
Per 600 PA
Jack Aker
Careerverified
Per 600 PA
10
57.69
Kei Igawa
Career
Per 600 PAverified
1
300
Jack Aker
Career
Per 600 PA
0
0
Kei Igawa
Career
Per 600 PA
0
0
Jack Aker
Career
Per 600 PA
1
5.77
Kei Igawa
Careerverified
Per 600 PAverified
0
0
Jack Aker
Career
Per 600 PA
0
0
Kei Igawa
Career
Per 600 PA
0
0
Jack Aker
Career
Per 600 PA
0
0
Kei Igawa
Career
Per 600 PA
0
0
Jack Aker
Career
Per 600 PA
0
0
Kei Igawa
Career
Per 600 PA
0
0
Jack Aker
Career
Per 600 PA
Kei Igawa
Career
Per 600 PA