Jack Aker vs. Jon Duplantier — Career Comparison

Jack Aker
Silent GenerationCaliforniaThrows RightBats RightNorth AmericaKansas City AthleticsAmerican LeagueRelief Pitcher
Jon Duplantier
MillenialDelawareThrows RightBats LeftNorth AmericaArizona DiamondbacksNational LeagueStarting Pitcher

Jon Duplantier 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 6.7 and 1.711 for Jon Duplantier. 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 Jon Duplantier

Jack Aker
Careerverified
Per 9 Inningsverified
11
11
Jon Duplantier
Career
Per 9 Innings
2
2
Jack Aker
Careerverified
Per 9 Inningsverified
495
5.97
Jon Duplantier
Career
Per 9 Innings
19
3.44
Jack Aker
Career
Per 9 Innings
0
0
Jon Duplantier
Careerverified
Per 9 Inningsverified
7
1.27
Jack Aker
Careerverified
Per 9 Inningsverified
47
0.57
Jon Duplantier
Career
Per 9 Innings
1
0.18
Jack Aker
Career
Per 9 Inningsverified
45
0.54
Jon Duplantier
Careerverified
Per 9 Innings
4
0.72
Jack Aker
Careerverified
Per 9 Inningsverified
51.09
51.09
Jon Duplantier
Career
Per 9 Innings
20
20
Jack Aker
Career
Per 9 Innings
0
0
Jon Duplantier
Careerverified
Per 9 Inningsverified
36.84
36.84
Jack Aker
Career
Per 9 Innings
0
0
Jon Duplantier
Career
Per 9 Innings
0
0
Jack Aker
Career
Per 9 Innings
0
0
Jon Duplantier
Career
Per 9 Innings
0
0
Jack Aker
Careerverified
Per 9 Inningsverified
123
1.48
Jon Duplantier
Career
Per 9 Innings
1
0.18
Jack Aker
Career
Per 9 Inningsverified
272
3.28
Jon Duplantier
Careerverified
Per 9 Innings
37
6.7
Jack Aker
Careerverified
Per 9 Inningsverified
3.28
3.28
Jon Duplantier
Career
Per 9 Innings
6.7
6.7
Jack Aker
Careerverified
Per 9 Inningsverified
3.45
3.45
Jon Duplantier
Career
Per 9 Innings
6.5
6.5
Jack Aker
Careerverified
Per 9 Inningsverified
4.29
4.29
Jon Duplantier
Career
Per 9 Innings
4.97
4.97
Jack Aker
Careerverified
Per 9 Inningsverified
0.244
0.244
Jon Duplantier
Career
Per 9 Innings
0.294
0.294
Jack Aker
Careerverified
Per 9 Innings
2238
27
Jon Duplantier
Career
Per 9 Innings
149
27
Jack Aker
Careerverified
Per 9 Innings
746
9
Jon Duplantier
Career
Per 9 Innings
49.2
9
Jack Aker
Career
Per 9 Inningsverified
679
8.19
Jon Duplantier
Careerverified
Per 9 Innings
58
10.51
Jack Aker
Careerverified
Per 9 Inningsverified
8.19
8.19
Jon Duplantier
Career
Per 9 Innings
10.51
10.51
Jack Aker
Career
Per 9 Inningsverified
64
0.77
Jon Duplantier
Careerverified
Per 9 Innings
7
1.27
Jack Aker
Careerverified
Per 9 Inningsverified
0.77
0.77
Jon Duplantier
Career
Per 9 Innings
1.27
1.27
Jack Aker
Careerverified
Per 9 Inningsverified
0.13
0.13
Jon Duplantier
Career
Per 9 Innings
0.37
0.37
Jack Aker
Career
Per 9 Inningsverified
274
3.31
Jon Duplantier
Careerverified
Per 9 Innings
26
4.71
Jack Aker
Career
Per 9 Innings
68
0.82
Jon Duplantier
Careerverified
Per 9 Inningsverified
1
0.18
Jack Aker
Careerverified
Per 9 Inningsverified
3.31
3.31
Jon Duplantier
Career
Per 9 Innings
4.71
4.71
Jack Aker
Careerverified
Per 9 Innings
404
4.87
Jon Duplantier
Career
Per 9 Inningsverified
46
8.34
Jack Aker
Career
Per 9 Innings
4.87
4.87
Jon Duplantier
Careerverified
Per 9 Inningsverified
8.34
8.34
Jack Aker
Career
Per 9 Innings
0.82
0.82
Jon Duplantier
Careerverified
Per 9 Inningsverified
2.42
2.42
Jack Aker
Career
Per 9 Innings
0.909
0.909
Jon Duplantier
Careerverified
Per 9 Inningsverified
1.45
1.45
Jack Aker
Career
Per 9 Inningsverified
13
0.16
Jon Duplantier
Careerverified
Per 9 Innings
2
0.36
Jack Aker
Career
Per 9 Inningsverified
40
0.48
Jon Duplantier
Careerverified
Per 9 Innings
7
1.27
Jack Aker
Career
Per 9 Innings
0
0
Jon Duplantier
Career
Per 9 Innings
0
0
Jack Aker
Careerverified
Per 9 Innings
3144
37.93
Jon Duplantier
Career
Per 9 Inningsverified
233
42.22
Jack Aker
Careerverified
Per 9 Inningsverified
321
3.87
Jon Duplantier
Career
Per 9 Innings
5
0.91
Jack Aker
Career
Per 9 Inningsverified
312
3.76
Jon Duplantier
Careerverified
Per 9 Innings
37
6.7
Jack Aker
Careerverified
Per 9 Inningsverified
3.76
3.76
Jon Duplantier
Career
Per 9 Innings
6.7
6.7
Jack Aker
Career
Per 9 Innings
32
0.39
Jon Duplantier
Careerverified
Per 9 Inningsverified
2
0.36
Jack Aker
Career
Per 9 Inningsverified
12
0.14
Jon Duplantier
Careerverified
Per 9 Innings
1
0.18
Jack Aker
Careerverified
Per 9 Innings
19
0.23
Jon Duplantier
Career
Per 9 Inningsverified
6
1.09
Jack Aker
Careerverified
Per 9 Inningsverified
1.278
1.278
Jon Duplantier
Career
Per 9 Innings
1.691
1.691
Jack Aker
Careerverified
Per 9 Innings
2786
33.61
Jon Duplantier
Career
Per 9 Inningsverified
197
35.7
Jack Aker
Careerverified
Per 9 Inningsverified
0.63
0.63
Jon Duplantier
Career
Per 9 Innings
1.95
1.95
Jack Aker
Careerverified
Per 9 Inningsverified
0.265
0.265
Jon Duplantier
Career
Per 9 Innings
0.354
0.354
Jack Aker
Career
Per 9 Innings
37.93
37.93
Jon Duplantier
Careerverified
Per 9 Inningsverified
42.22
42.22

Fielding Stats for Jack Aker and Jon Duplantier

Jack Aker
Careerverified
Per 9 Inningsverified
11
11
Jon Duplantier
Career
Per 9 Innings
2
2
Jack Aker
Careerverified
Per 9 Inningsverified
495
5.97
Jon Duplantier
Career
Per 9 Innings
19
3.44
Jack Aker
Career
Per 9 Innings
0
0
Jon Duplantier
Careerverified
Per 9 Inningsverified
7
1.27
Jack Aker
Careerverified
Per 9 Innings
2240
27
Jon Duplantier
Career
Per 9 Innings
149
27
Jack Aker
Careerverified
Per 9 Innings
746.2
9
Jon Duplantier
Career
Per 9 Innings
49.2
9
Jack Aker
Careerverified
Per 9 Inningsverified
65
0.78
Jon Duplantier
Career
Per 9 Innings
2
0.36
Jack Aker
Careerverified
Per 9 Inningsverified
167
2.01
Jon Duplantier
Career
Per 9 Innings
3
0.54
Jack Aker
Career
Per 9 Innings
8
0.1
Jon Duplantier
Careerverified
Per 9 Inningsverified
0
0
Jack Aker
Careerverified
Per 9 Inningsverified
240
2.89
Jon Duplantier
Career
Per 9 Innings
5
0.91
Jack Aker
Careerverified
Per 9 Inningsverified
232
2.8
Jon Duplantier
Career
Per 9 Innings
5
0.91
Jack Aker
Career
Per 9 Innings
96.67
96.67
Jon Duplantier
Careerverified
Per 9 Inningsverified
100
100
Jack Aker
Careerverified
Per 9 Inningsverified
0.469
0.469
Jon Duplantier
Career
Per 9 Innings
0.263
0.263
Jack Aker
Career
Per 9 Innings
0
0
Jon Duplantier
Careerverified
Per 9 Inningsverified
36.84
36.84
Jack Aker
Careerverified
Per 9 Inningsverified
20
0.24
Jon Duplantier
Career
Per 9 Innings
1
0.18
Jack Aker
Career
Per 9 Innings
0
0
Jon Duplantier
Career
Per 9 Innings
0
0
Jack Aker
Career
Per 9 Innings
0
0
Jon Duplantier
Career
Per 9 Innings
0
0
Jack Aker
Career
Per 9 Innings
0
0
Jon Duplantier
Career
Per 9 Innings
0
0
Jack Aker
Career
Per 9 Innings
0
0
Jon Duplantier
Career
Per 9 Innings
0
0

Hitting Stats for Jack Aker and Jon Duplantier

Jack Aker
Careerverified
Per 600 PAverified
11
11
Jon Duplantier
Career
Per 600 PA
2
2
Jack Aker
Careerverified
Per 600 PAverified
496
2861.54
Jon Duplantier
Career
Per 600 PA
19
1036.36
Jack Aker
Careerverified
Per 600 PA
104
600
Jon Duplantier
Career
Per 600 PA
11
600
Jack Aker
Careerverified
Per 600 PA
92
530.77
Jon Duplantier
Career
Per 600 PAverified
10
545.45
Jack Aker
Career
Per 600 PA
0.076
0.076
Jon Duplantier
Careerverified
Per 600 PAverified
0.1
0.1
Jack Aker
Career
Per 600 PA
0.279
0.279
Jon Duplantier
Careerverified
Per 600 PAverified
0.318
0.318
Jack Aker
Careerverified
Per 600 PA
7
40.38
Jon Duplantier
Career
Per 600 PAverified
1
54.55
Jack Aker
Careerverified
Per 600 PA
5
28.85
Jon Duplantier
Career
Per 600 PAverified
1
54.55
Jack Aker
Careerverified
Per 600 PAverified
2
11.54
Jon Duplantier
Career
Per 600 PA
0
0
Jack Aker
Career
Per 600 PA
0
0
Jon Duplantier
Career
Per 600 PA
0
0
Jack Aker
Career
Per 600 PA
0
0
Jon Duplantier
Career
Per 600 PA
0
0
Jack Aker
Careerverified
Per 600 PAverified
2
11.54
Jon Duplantier
Career
Per 600 PA
0
0
Jack Aker
Careerverified
Per 600 PAverified
0.286
0.286
Jon Duplantier
Career
Per 600 PA
0
0
Jack Aker
Career
Per 600 PA
0
0
Jon Duplantier
Career
Per 600 PA
0
0
Jack Aker
Career
Per 600 PA
0
0
Jon Duplantier
Career
Per 600 PA
0
0
Jack Aker
Careerverified
Per 600 PA
0.81
4.66
Jon Duplantier
Career
Per 600 PAverified
0.2
10.81
Jack Aker
Careerverified
Per 600 PA
9
51.92
Jon Duplantier
Career
Per 600 PAverified
1
54.55
Jack Aker
Careerverified
Per 600 PA
9
51.92
Jon Duplantier
Career
Per 600 PAverified
2
109.09
Jack Aker
Career
Per 600 PA
0.096
0.096
Jon Duplantier
Careerverified
Per 600 PAverified
0.182
0.182
Jack Aker
Career
Per 600 PA
0.098
0.098
Jon Duplantier
Careerverified
Per 600 PAverified
0.1
0.1
Jack Aker
Career
Per 600 PA
0.194
0.194
Jon Duplantier
Careerverified
Per 600 PAverified
0.282
0.282
Jack Aker
Careerverified
Per 600 PAverified
0.022
0.022
Jon Duplantier
Career
Per 600 PA
0
0
Jack Aker
Career
Per 600 PA
0.068
0.068
Jon Duplantier
Careerverified
Per 600 PAverified
0.107
0.107
Jack Aker
Career
Per 600 PA
0.128
0.128
Jon Duplantier
Careerverified
Per 600 PAverified
0.222
0.222
Jack Aker
Career
Per 600 PA
0.171
0.171
Jon Duplantier
Careerverified
Per 600 PAverified
0.333
0.333
Jack Aker
Careerverified
Per 600 PA
3
17.31
Jon Duplantier
Career
Per 600 PAverified
1
54.55
Jack Aker
Careerverified
Per 600 PAverified
4
23.08
Jon Duplantier
Career
Per 600 PA
0
0
Jack Aker
Careerverified
Per 600 PA
7
40.38
Jon Duplantier
Career
Per 600 PAverified
1
54.55
Jack Aker
Career
Per 600 PA
-4.13
-23.83
Jon Duplantier
Careerverified
Per 600 PAverified
-0.07
-3.92
Jack Aker
Career
Per 600 PA
1
5.77
Jon Duplantier
Career
Per 600 PAverified
1
54.55
Jack Aker
Careerverified
Per 600 PAverified
1
5.77
Jon Duplantier
Career
Per 600 PA
0
0
Jack Aker
Career
Per 600 PA
0
0
Jon Duplantier
Career
Per 600 PA
0
0
Jack Aker
Career
Per 600 PAverified
51
294.23
Jon Duplantier
Careerverified
Per 600 PA
7
381.82
Jack Aker
Careerverified
Per 600 PAverified
2.04
2.04
Jon Duplantier
Career
Per 600 PA
1.57
1.57
Jack Aker
Careerverified
Per 600 PAverified
0.02
0.02
Jon Duplantier
Career
Per 600 PA
0
0
Jack Aker
Careerverified
Per 600 PAverified
10
57.69
Jon Duplantier
Career
Per 600 PA
0
0
Jack Aker
Career
Per 600 PA
0
0
Jon Duplantier
Career
Per 600 PA
0
0
Jack Aker
Career
Per 600 PA
1
5.77
Jon Duplantier
Careerverified
Per 600 PAverified
0
0
Jack Aker
Career
Per 600 PA
0
0
Jon Duplantier
Career
Per 600 PA
0
0
Jack Aker
Career
Per 600 PA
0
0
Jon Duplantier
Career
Per 600 PA
0
0
Jack Aker
Career
Per 600 PA
0
0
Jon Duplantier
Career
Per 600 PA
0
0
Jack Aker
Career
Per 600 PA
Jon Duplantier
Career
Per 600 PA