Jack Aker vs. Roosevelt Davis — Career Comparison

Jack Aker
Silent GenerationCaliforniaThrows RightBats RightNorth AmericaKansas City AthleticsAmerican LeagueRelief Pitcher
Roosevelt Davis
Greatest GenerationOklahomaThrows RightBats RightNorth AmericaSt. Louis StarsNegro National LeagueStarting PitcherAll-Star

Roosevelt Davis 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 4.1 and 1.355 for Roosevelt Davis. 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 Roosevelt Davis

Jack Aker
Career
Per 9 Innings
11
11
Roosevelt Davis
Careerverified
Per 9 Inningsverified
20
20
Jack Aker
Careerverified
Per 9 Inningsverified
495
5.97
Roosevelt Davis
Career
Per 9 Innings
305
1.78
Jack Aker
Career
Per 9 Innings
0
0
Roosevelt Davis
Careerverified
Per 9 Inningsverified
167
0.97
Jack Aker
Career
Per 9 Innings
47
0.57
Roosevelt Davis
Careerverified
Per 9 Innings
97
0.57
Jack Aker
Careerverified
Per 9 Innings
45
0.54
Roosevelt Davis
Career
Per 9 Inningsverified
62
0.36
Jack Aker
Career
Per 9 Innings
51.09
51.09
Roosevelt Davis
Careerverified
Per 9 Inningsverified
61.01
61.01
Jack Aker
Career
Per 9 Innings
0
0
Roosevelt Davis
Careerverified
Per 9 Inningsverified
54.75
54.75
Jack Aker
Career
Per 9 Innings
0
0
Roosevelt Davis
Careerverified
Per 9 Inningsverified
89
0.52
Jack Aker
Career
Per 9 Innings
0
0
Roosevelt Davis
Careerverified
Per 9 Inningsverified
9
0.05
Jack Aker
Careerverified
Per 9 Inningsverified
123
1.48
Roosevelt Davis
Career
Per 9 Innings
14
0.08
Jack Aker
Careerverified
Per 9 Inningsverified
272
3.28
Roosevelt Davis
Career
Per 9 Innings
704
4.1
Jack Aker
Careerverified
Per 9 Inningsverified
3.28
3.28
Roosevelt Davis
Career
Per 9 Innings
4.1
4.1
Jack Aker
Careerverified
Per 9 Inningsverified
3.45
3.45
Roosevelt Davis
Career
Per 9 Innings
4.17
4.17
Jack Aker
Career
Per 9 Innings
4.29
4.29
Roosevelt Davis
Careerverified
Per 9 Inningsverified
3.43
3.43
Jack Aker
Careerverified
Per 9 Inningsverified
0.244
0.244
Roosevelt Davis
Career
Per 9 Innings
0.316
0.316
Jack Aker
Career
Per 9 Innings
2238
27
Roosevelt Davis
Careerverified
Per 9 Innings
4635
27
Jack Aker
Career
Per 9 Innings
746
9
Roosevelt Davis
Careerverified
Per 9 Innings
1545
9
Jack Aker
Careerverified
Per 9 Inningsverified
679
8.19
Roosevelt Davis
Career
Per 9 Innings
1702
9.91
Jack Aker
Careerverified
Per 9 Inningsverified
8.19
8.19
Roosevelt Davis
Career
Per 9 Innings
9.91
9.91
Jack Aker
Career
Per 9 Innings
64
0.77
Roosevelt Davis
Careerverified
Per 9 Inningsverified
57
0.33
Jack Aker
Career
Per 9 Innings
0.77
0.77
Roosevelt Davis
Careerverified
Per 9 Inningsverified
0.33
0.33
Jack Aker
Careerverified
Per 9 Inningsverified
0.13
0.13
Roosevelt Davis
Career
Per 9 Innings
0.19
0.19
Jack Aker
Careerverified
Per 9 Innings
274
3.31
Roosevelt Davis
Career
Per 9 Inningsverified
391
2.28
Jack Aker
Career
Per 9 Innings
68
0.82
Roosevelt Davis
Careerverified
Per 9 Inningsverified
0
0
Jack Aker
Career
Per 9 Innings
3.31
3.31
Roosevelt Davis
Careerverified
Per 9 Inningsverified
2.28
2.28
Jack Aker
Career
Per 9 Inningsverified
404
4.87
Roosevelt Davis
Careerverified
Per 9 Innings
689
4.01
Jack Aker
Careerverified
Per 9 Inningsverified
4.87
4.87
Roosevelt Davis
Career
Per 9 Innings
4.01
4.01
Jack Aker
Career
Per 9 Innings
0.82
0.82
Roosevelt Davis
Careerverified
Per 9 Inningsverified
2.26
2.26
Jack Aker
Careerverified
Per 9 Inningsverified
0.909
0.909
Roosevelt Davis
Career
Per 9 Innings
0.699
0.699
Jack Aker
Careerverified
Per 9 Innings
13
0.16
Roosevelt Davis
Career
Per 9 Inningsverified
14
0.08
Jack Aker
Careerverified
Per 9 Innings
40
0.48
Roosevelt Davis
Career
Per 9 Inningsverified
42
0.24
Jack Aker
Career
Per 9 Innings
0
0
Roosevelt Davis
Career
Per 9 Innings
0
0
Jack Aker
Career
Per 9 Inningsverified
3144
37.93
Roosevelt Davis
Careerverified
Per 9 Innings
5996
34.93
Jack Aker
Careerverified
Per 9 Inningsverified
321
3.87
Roosevelt Davis
Career
Per 9 Innings
63
0.37
Jack Aker
Careerverified
Per 9 Inningsverified
312
3.76
Roosevelt Davis
Career
Per 9 Innings
859
5
Jack Aker
Careerverified
Per 9 Inningsverified
3.76
3.76
Roosevelt Davis
Career
Per 9 Innings
5
5
Jack Aker
Careerverified
Per 9 Inningsverified
32
0.39
Roosevelt Davis
Career
Per 9 Innings
167
0.97
Jack Aker
Career
Per 9 Innings
12
0.14
Roosevelt Davis
Careerverified
Per 9 Inningsverified
1
0.01
Jack Aker
Career
Per 9 Innings
19
0.23
Roosevelt Davis
Careerverified
Per 9 Inningsverified
122
0.71
Jack Aker
Careerverified
Per 9 Inningsverified
1.278
1.278
Roosevelt Davis
Career
Per 9 Innings
1.355
1.355
Jack Aker
Career
Per 9 Inningsverified
2786
33.61
Roosevelt Davis
Careerverified
Per 9 Innings
5395
31.43
Jack Aker
Careerverified
Per 9 Inningsverified
0.63
0.63
Roosevelt Davis
Career
Per 9 Innings
2.82
2.82
Jack Aker
Careerverified
Per 9 Inningsverified
0.265
0.265
Roosevelt Davis
Career
Per 9 Innings
0.354
0.354
Jack Aker
Careerverified
Per 9 Inningsverified
37.93
37.93
Roosevelt Davis
Career
Per 9 Innings
34.93
34.93

Fielding Stats for Jack Aker and Roosevelt Davis

Jack Aker
Career
Per 9 Innings
11
11
Roosevelt Davis
Careerverified
Per 9 Inningsverified
20
20
Jack Aker
Careerverified
Per 9 Inningsverified
495
5.97
Roosevelt Davis
Career
Per 9 Innings
306
1.99
Jack Aker
Career
Per 9 Innings
0
0
Roosevelt Davis
Careerverified
Per 9 Inningsverified
171
1.11
Jack Aker
Career
Per 9 Innings
2240
27
Roosevelt Davis
Careerverified
Per 9 Innings
4159
27
Jack Aker
Career
Per 9 Innings
746.2
9
Roosevelt Davis
Careerverified
Per 9 Innings
1386.1
9
Jack Aker
Careerverified
Per 9 Inningsverified
65
0.78
Roosevelt Davis
Career
Per 9 Innings
27
0.18
Jack Aker
Career
Per 9 Innings
167
2.01
Roosevelt Davis
Careerverified
Per 9 Inningsverified
389
2.53
Jack Aker
Careerverified
Per 9 Inningsverified
8
0.1
Roosevelt Davis
Career
Per 9 Innings
22
0.14
Jack Aker
Career
Per 9 Inningsverified
240
2.89
Roosevelt Davis
Careerverified
Per 9 Innings
438
2.84
Jack Aker
Career
Per 9 Inningsverified
232
2.8
Roosevelt Davis
Careerverified
Per 9 Innings
416
2.7
Jack Aker
Careerverified
Per 9 Inningsverified
96.67
96.67
Roosevelt Davis
Career
Per 9 Innings
94.98
94.98
Jack Aker
Career
Per 9 Innings
0.469
0.469
Roosevelt Davis
Careerverified
Per 9 Inningsverified
1.36
1.36
Jack Aker
Career
Per 9 Innings
0
0
Roosevelt Davis
Careerverified
Per 9 Inningsverified
55.88
55.88
Jack Aker
Career
Per 9 Inningsverified
20
0.24
Roosevelt Davis
Careerverified
Per 9 Innings
22
0.14
Jack Aker
Career
Per 9 Innings
0
0
Roosevelt Davis
Career
Per 9 Innings
0
0
Jack Aker
Career
Per 9 Innings
0
0
Roosevelt Davis
Career
Per 9 Innings
0
0
Jack Aker
Career
Per 9 Innings
0
0
Roosevelt Davis
Career
Per 9 Innings
0
0
Jack Aker
Career
Per 9 Innings
0
0
Roosevelt Davis
Career
Per 9 Innings
0
0

Hitting Stats for Jack Aker and Roosevelt Davis

Jack Aker
Career
Per 600 PA
11
11
Roosevelt Davis
Careerverified
Per 600 PAverified
20
20
Jack Aker
Careerverified
Per 600 PAverified
496
2861.54
Roosevelt Davis
Career
Per 600 PA
307
296.14
Jack Aker
Career
Per 600 PA
104
600
Roosevelt Davis
Careerverified
Per 600 PA
622
600
Jack Aker
Career
Per 600 PA
92
530.77
Roosevelt Davis
Careerverified
Per 600 PAverified
569
548.87
Jack Aker
Career
Per 600 PA
0.076
0.076
Roosevelt Davis
Careerverified
Per 600 PAverified
0.178
0.178
Jack Aker
Career
Per 600 PA
0.279
0.279
Roosevelt Davis
Careerverified
Per 600 PAverified
0.472
0.472
Jack Aker
Career
Per 600 PA
7
40.38
Roosevelt Davis
Careerverified
Per 600 PAverified
101
97.43
Jack Aker
Career
Per 600 PA
5
28.85
Roosevelt Davis
Careerverified
Per 600 PAverified
85
81.99
Jack Aker
Career
Per 600 PAverified
2
11.54
Roosevelt Davis
Careerverified
Per 600 PA
11
10.61
Jack Aker
Career
Per 600 PA
0
0
Roosevelt Davis
Careerverified
Per 600 PAverified
2
1.93
Jack Aker
Career
Per 600 PA
0
0
Roosevelt Davis
Careerverified
Per 600 PAverified
3
2.89
Jack Aker
Career
Per 600 PA
2
11.54
Roosevelt Davis
Careerverified
Per 600 PAverified
16
15.43
Jack Aker
Careerverified
Per 600 PAverified
0.286
0.286
Roosevelt Davis
Career
Per 600 PA
0.158
0.158
Jack Aker
Career
Per 600 PA
0
0
Roosevelt Davis
Careerverified
Per 600 PAverified
0.005
0.005
Jack Aker
Career
Per 600 PA
0
0
Roosevelt Davis
Careerverified
Per 600 PAverified
0.03
0.03
Jack Aker
Career
Per 600 PA
0.81
4.66
Roosevelt Davis
Careerverified
Per 600 PAverified
28.77
27.75
Jack Aker
Career
Per 600 PA
9
51.92
Roosevelt Davis
Careerverified
Per 600 PAverified
125
120.58
Jack Aker
Career
Per 600 PA
9
51.92
Roosevelt Davis
Careerverified
Per 600 PAverified
130
125.4
Jack Aker
Career
Per 600 PA
0.096
0.096
Roosevelt Davis
Careerverified
Per 600 PAverified
0.217
0.217
Jack Aker
Career
Per 600 PA
0.098
0.098
Roosevelt Davis
Careerverified
Per 600 PAverified
0.22
0.22
Jack Aker
Career
Per 600 PA
0.194
0.194
Roosevelt Davis
Careerverified
Per 600 PAverified
0.437
0.437
Jack Aker
Career
Per 600 PA
0.022
0.022
Roosevelt Davis
Careerverified
Per 600 PAverified
0.042
0.042
Jack Aker
Career
Per 600 PA
0.068
0.068
Roosevelt Davis
Careerverified
Per 600 PAverified
0.153
0.153
Jack Aker
Career
Per 600 PA
0.128
0.128
Roosevelt Davis
Careerverified
Per 600 PAverified
0.329
0.329
Jack Aker
Career
Per 600 PA
0.171
0.171
Roosevelt Davis
Careerverified
Per 600 PAverified
0.173
0.173
Jack Aker
Career
Per 600 PA
3
17.31
Roosevelt Davis
Careerverified
Per 600 PAverified
34
32.8
Jack Aker
Career
Per 600 PA
4
23.08
Roosevelt Davis
Careerverified
Per 600 PAverified
33
31.83
Jack Aker
Career
Per 600 PA
7
40.38
Roosevelt Davis
Careerverified
Per 600 PAverified
64
61.74
Jack Aker
Career
Per 600 PA
-4.13
-23.83
Roosevelt Davis
Careerverified
Per 600 PAverified
28.18
27.18
Jack Aker
Career
Per 600 PAverified
1
5.77
Roosevelt Davis
Career
Per 600 PA
1
0.96
Jack Aker
Career
Per 600 PA
1
5.77
Roosevelt Davis
Careerverified
Per 600 PAverified
28
27.01
Jack Aker
Career
Per 600 PA
0
0
Roosevelt Davis
Career
Per 600 PA
0
0
Jack Aker
Career
Per 600 PA
51
294.23
Roosevelt Davis
Careerverified
Per 600 PAverified
0
0
Jack Aker
Careerverified
Per 600 PAverified
2.04
2.04
Roosevelt Davis
Career
Per 600 PA
Jack Aker
Careerverified
Per 600 PAverified
0.02
0.02
Roosevelt Davis
Career
Per 600 PA
Jack Aker
Career
Per 600 PAverified
10
57.69
Roosevelt Davis
Careerverified
Per 600 PA
23
22.19
Jack Aker
Career
Per 600 PA
0
0
Roosevelt Davis
Careerverified
Per 600 PAverified
1
0.96
Jack Aker
Career
Per 600 PA
1
5.77
Roosevelt Davis
Careerverified
Per 600 PAverified
0
0
Jack Aker
Career
Per 600 PA
0
0
Roosevelt Davis
Career
Per 600 PA
0
0
Jack Aker
Career
Per 600 PA
0
0
Roosevelt Davis
Career
Per 600 PA
0
0
Jack Aker
Career
Per 600 PA
0
0
Roosevelt Davis
Career
Per 600 PA
0
0
Jack Aker
Career
Per 600 PA
Roosevelt Davis
Career
Per 600 PA