Jack Aker vs. Lefty Williams — Career Comparison

Jack Aker
Silent GenerationCaliforniaThrows RightBats RightNorth AmericaKansas City AthleticsAmerican LeagueRelief Pitcher
Lefty Williams
Lost GenerationVirginiaThrows LeftBats LeftNorth AmericaHomestead GraysNegro National League IIStarting Pitcher

Lefty Williams 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 4.41 and 1.319 for Lefty Williams. 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 Lefty Williams

Jack Aker
Careerverified
Per 9 Inningsverified
11
11
Lefty Williams
Career
Per 9 Innings
8
8
Jack Aker
Careerverified
Per 9 Inningsverified
495
5.97
Lefty Williams
Career
Per 9 Innings
60
1.5
Jack Aker
Career
Per 9 Innings
0
0
Lefty Williams
Careerverified
Per 9 Inningsverified
40
1
Jack Aker
Careerverified
Per 9 Innings
47
0.57
Lefty Williams
Career
Per 9 Inningsverified
28
0.7
Jack Aker
Career
Per 9 Innings
45
0.54
Lefty Williams
Careerverified
Per 9 Inningsverified
12
0.3
Jack Aker
Career
Per 9 Innings
51.09
51.09
Lefty Williams
Careerverified
Per 9 Inningsverified
70
70
Jack Aker
Career
Per 9 Innings
0
0
Lefty Williams
Careerverified
Per 9 Inningsverified
66.67
66.67
Jack Aker
Career
Per 9 Innings
0
0
Lefty Williams
Careerverified
Per 9 Inningsverified
28
0.7
Jack Aker
Career
Per 9 Innings
0
0
Lefty Williams
Careerverified
Per 9 Inningsverified
4
0.1
Jack Aker
Careerverified
Per 9 Inningsverified
123
1.48
Lefty Williams
Career
Per 9 Innings
0
0
Jack Aker
Career
Per 9 Inningsverified
272
3.28
Lefty Williams
Careerverified
Per 9 Innings
176
4.41
Jack Aker
Careerverified
Per 9 Inningsverified
3.28
3.28
Lefty Williams
Career
Per 9 Innings
4.41
4.41
Jack Aker
Career
Per 9 Innings
3.45
3.45
Lefty Williams
Careerverified
Per 9 Inningsverified
3.34
3.34
Jack Aker
Career
Per 9 Innings
4.29
4.29
Lefty Williams
Careerverified
Per 9 Inningsverified
3.35
3.35
Jack Aker
Careerverified
Per 9 Inningsverified
0.244
0.244
Lefty Williams
Career
Per 9 Innings
0.271
0.271
Jack Aker
Careerverified
Per 9 Innings
2238
27
Lefty Williams
Career
Per 9 Innings
1078
27
Jack Aker
Careerverified
Per 9 Innings
746
9
Lefty Williams
Career
Per 9 Innings
359.1
9
Jack Aker
Career
Per 9 Inningsverified
679
8.19
Lefty Williams
Careerverified
Per 9 Innings
369
9.24
Jack Aker
Careerverified
Per 9 Inningsverified
8.19
8.19
Lefty Williams
Career
Per 9 Innings
9.24
9.24
Jack Aker
Career
Per 9 Innings
64
0.77
Lefty Williams
Careerverified
Per 9 Inningsverified
6
0.15
Jack Aker
Career
Per 9 Innings
0.77
0.77
Lefty Williams
Careerverified
Per 9 Inningsverified
0.15
0.15
Jack Aker
Career
Per 9 Innings
0.13
0.13
Lefty Williams
Careerverified
Per 9 Inningsverified
0.1
0.1
Jack Aker
Career
Per 9 Innings
274
3.31
Lefty Williams
Careerverified
Per 9 Inningsverified
105
2.63
Jack Aker
Career
Per 9 Innings
68
0.82
Lefty Williams
Careerverified
Per 9 Inningsverified
0
0
Jack Aker
Career
Per 9 Innings
3.31
3.31
Lefty Williams
Careerverified
Per 9 Inningsverified
2.63
2.63
Jack Aker
Careerverified
Per 9 Inningsverified
404
4.87
Lefty Williams
Career
Per 9 Innings
148
3.71
Jack Aker
Careerverified
Per 9 Inningsverified
4.87
4.87
Lefty Williams
Career
Per 9 Innings
3.71
3.71
Jack Aker
Career
Per 9 Innings
0.82
0.82
Lefty Williams
Careerverified
Per 9 Inningsverified
2.47
2.47
Jack Aker
Careerverified
Per 9 Inningsverified
0.909
0.909
Lefty Williams
Career
Per 9 Innings
0.704
0.704
Jack Aker
Career
Per 9 Innings
13
0.16
Lefty Williams
Careerverified
Per 9 Inningsverified
2
0.05
Jack Aker
Career
Per 9 Innings
40
0.48
Lefty Williams
Careerverified
Per 9 Inningsverified
9
0.23
Jack Aker
Career
Per 9 Innings
0
0
Lefty Williams
Career
Per 9 Innings
0
0
Jack Aker
Careerverified
Per 9 Innings
3144
37.93
Lefty Williams
Career
Per 9 Inningsverified
1522
38.12
Jack Aker
Careerverified
Per 9 Inningsverified
321
3.87
Lefty Williams
Career
Per 9 Innings
13
0.33
Jack Aker
Career
Per 9 Inningsverified
312
3.76
Lefty Williams
Careerverified
Per 9 Innings
209
5.23
Jack Aker
Careerverified
Per 9 Inningsverified
3.76
3.76
Lefty Williams
Career
Per 9 Innings
5.23
5.23
Jack Aker
Careerverified
Per 9 Inningsverified
32
0.39
Lefty Williams
Career
Per 9 Innings
47
1.18
Jack Aker
Career
Per 9 Innings
12
0.14
Lefty Williams
Careerverified
Per 9 Inningsverified
0
0
Jack Aker
Career
Per 9 Innings
19
0.23
Lefty Williams
Careerverified
Per 9 Inningsverified
32
0.8
Jack Aker
Careerverified
Per 9 Inningsverified
1.278
1.278
Lefty Williams
Career
Per 9 Innings
1.319
1.319
Jack Aker
Careerverified
Per 9 Innings
2786
33.61
Lefty Williams
Career
Per 9 Inningsverified
1361
34.09
Jack Aker
Careerverified
Per 9 Inningsverified
0.63
0.63
Lefty Williams
Career
Per 9 Innings
3.48
3.48
Jack Aker
Careerverified
Per 9 Inningsverified
0.265
0.265
Lefty Williams
Career
Per 9 Innings
0.301
0.301
Jack Aker
Career
Per 9 Innings
37.93
37.93
Lefty Williams
Careerverified
Per 9 Inningsverified
38.12
38.12

Fielding Stats for Jack Aker and Lefty Williams

Jack Aker
Careerverified
Per 9 Inningsverified
11
11
Lefty Williams
Career
Per 9 Innings
8
8
Jack Aker
Careerverified
Per 9 Inningsverified
495
5.97
Lefty Williams
Career
Per 9 Innings
65
1.53
Jack Aker
Career
Per 9 Innings
0
0
Lefty Williams
Careerverified
Per 9 Inningsverified
42
0.99
Jack Aker
Careerverified
Per 9 Innings
2240
27
Lefty Williams
Career
Per 9 Innings
1150
27
Jack Aker
Careerverified
Per 9 Innings
746.2
9
Lefty Williams
Career
Per 9 Innings
383.1
9
Jack Aker
Careerverified
Per 9 Inningsverified
65
0.78
Lefty Williams
Career
Per 9 Innings
20
0.47
Jack Aker
Careerverified
Per 9 Innings
167
2.01
Lefty Williams
Career
Per 9 Inningsverified
113
2.65
Jack Aker
Career
Per 9 Inningsverified
8
0.1
Lefty Williams
Careerverified
Per 9 Innings
7
0.16
Jack Aker
Careerverified
Per 9 Innings
240
2.89
Lefty Williams
Career
Per 9 Inningsverified
140
3.29
Jack Aker
Careerverified
Per 9 Innings
232
2.8
Lefty Williams
Career
Per 9 Inningsverified
133
3.12
Jack Aker
Careerverified
Per 9 Inningsverified
96.67
96.67
Lefty Williams
Career
Per 9 Innings
95
95
Jack Aker
Career
Per 9 Innings
0.469
0.469
Lefty Williams
Careerverified
Per 9 Inningsverified
2.046
2.046
Jack Aker
Career
Per 9 Innings
0
0
Lefty Williams
Careerverified
Per 9 Inningsverified
64.62
64.62
Jack Aker
Careerverified
Per 9 Inningsverified
20
0.24
Lefty Williams
Career
Per 9 Innings
3
0.07
Jack Aker
Career
Per 9 Innings
0
0
Lefty Williams
Career
Per 9 Innings
0
0
Jack Aker
Career
Per 9 Innings
0
0
Lefty Williams
Career
Per 9 Innings
0
0
Jack Aker
Career
Per 9 Innings
0
0
Lefty Williams
Career
Per 9 Innings
0
0
Jack Aker
Career
Per 9 Innings
0
0
Lefty Williams
Career
Per 9 Innings
0
0

Hitting Stats for Jack Aker and Lefty Williams

Jack Aker
Careerverified
Per 600 PAverified
11
11
Lefty Williams
Career
Per 600 PA
8
8
Jack Aker
Careerverified
Per 600 PAverified
496
2861.54
Lefty Williams
Career
Per 600 PA
65
234.94
Jack Aker
Career
Per 600 PA
104
600
Lefty Williams
Careerverified
Per 600 PA
166
600
Jack Aker
Career
Per 600 PA
92
530.77
Lefty Williams
Careerverified
Per 600 PAverified
149
538.55
Jack Aker
Career
Per 600 PA
0.076
0.076
Lefty Williams
Careerverified
Per 600 PAverified
0.228
0.228
Jack Aker
Career
Per 600 PA
0.279
0.279
Lefty Williams
Careerverified
Per 600 PAverified
0.575
0.575
Jack Aker
Career
Per 600 PA
7
40.38
Lefty Williams
Careerverified
Per 600 PAverified
34
122.89
Jack Aker
Career
Per 600 PA
5
28.85
Lefty Williams
Careerverified
Per 600 PAverified
27
97.59
Jack Aker
Career
Per 600 PA
2
11.54
Lefty Williams
Careerverified
Per 600 PAverified
7
25.3
Jack Aker
Career
Per 600 PA
0
0
Lefty Williams
Career
Per 600 PA
0
0
Jack Aker
Career
Per 600 PA
0
0
Lefty Williams
Career
Per 600 PA
0
0
Jack Aker
Career
Per 600 PA
2
11.54
Lefty Williams
Careerverified
Per 600 PAverified
7
25.3
Jack Aker
Careerverified
Per 600 PAverified
0.286
0.286
Lefty Williams
Career
Per 600 PA
0.206
0.206
Jack Aker
Career
Per 600 PA
0
0
Lefty Williams
Career
Per 600 PA
0
0
Jack Aker
Career
Per 600 PA
0
0
Lefty Williams
Career
Per 600 PA
0
0
Jack Aker
Career
Per 600 PA
0.81
4.66
Lefty Williams
Careerverified
Per 600 PAverified
10.87
39.28
Jack Aker
Career
Per 600 PA
9
51.92
Lefty Williams
Careerverified
Per 600 PAverified
41
148.19
Jack Aker
Career
Per 600 PA
9
51.92
Lefty Williams
Careerverified
Per 600 PAverified
41
148.19
Jack Aker
Career
Per 600 PA
0.096
0.096
Lefty Williams
Careerverified
Per 600 PAverified
0.263
0.263
Jack Aker
Career
Per 600 PA
0.098
0.098
Lefty Williams
Careerverified
Per 600 PAverified
0.275
0.275
Jack Aker
Career
Per 600 PA
0.194
0.194
Lefty Williams
Careerverified
Per 600 PAverified
0.538
0.538
Jack Aker
Career
Per 600 PA
0.022
0.022
Lefty Williams
Careerverified
Per 600 PAverified
0.047
0.047
Jack Aker
Career
Per 600 PA
0.068
0.068
Lefty Williams
Careerverified
Per 600 PAverified
0.187
0.187
Jack Aker
Career
Per 600 PA
0.128
0.128
Lefty Williams
Careerverified
Per 600 PAverified
0.417
0.417
Jack Aker
Career
Per 600 PA
0.171
0.171
Lefty Williams
Careerverified
Per 600 PAverified
0.235
0.235
Jack Aker
Career
Per 600 PA
3
17.31
Lefty Williams
Careerverified
Per 600 PAverified
28
101.2
Jack Aker
Career
Per 600 PA
4
23.08
Lefty Williams
Careerverified
Per 600 PAverified
16
57.83
Jack Aker
Career
Per 600 PA
7
40.38
Lefty Williams
Careerverified
Per 600 PAverified
44
159.04
Jack Aker
Career
Per 600 PA
-4.13
-23.83
Lefty Williams
Careerverified
Per 600 PAverified
12.47
45.07
Jack Aker
Career
Per 600 PAverified
1
5.77
Lefty Williams
Career
Per 600 PA
1
3.61
Jack Aker
Career
Per 600 PA
1
5.77
Lefty Williams
Careerverified
Per 600 PAverified
6
21.69
Jack Aker
Career
Per 600 PA
0
0
Lefty Williams
Career
Per 600 PA
0
0
Jack Aker
Career
Per 600 PA
51
294.23
Lefty Williams
Careerverified
Per 600 PAverified
4
14.46
Jack Aker
Career
Per 600 PA
2.04
2.04
Lefty Williams
Careerverified
Per 600 PAverified
41.5
41.5
Jack Aker
Career
Per 600 PA
0.02
0.02
Lefty Williams
Careerverified
Per 600 PAverified
1.5
1.5
Jack Aker
Career
Per 600 PAverified
10
57.69
Lefty Williams
Career
Per 600 PA
10
36.14
Jack Aker
Career
Per 600 PA
0
0
Lefty Williams
Career
Per 600 PA
0
0
Jack Aker
Career
Per 600 PA
1
5.77
Lefty Williams
Careerverified
Per 600 PAverified
0
0
Jack Aker
Career
Per 600 PA
0
0
Lefty Williams
Career
Per 600 PA
0
0
Jack Aker
Career
Per 600 PA
0
0
Lefty Williams
Career
Per 600 PA
0
0
Jack Aker
Career
Per 600 PA
0
0
Lefty Williams
Career
Per 600 PA
0
0
Jack Aker
Career
Per 600 PA
Lefty Williams
Career
Per 600 PA