Billy Hart vs. Carl Mays — Career Comparison

Billy Hart
Pre-GenerationalMissouriNorth AmericaSt. Louis BrownsAmerican AssociationRelief Pitcher
Carl Mays
Lost GenerationKentuckyThrows RightBats LeftNorth AmericaBoston Red SoxAmerican LeagueStarting Pitcher

Carl Mays built a career as a starting pitcher and Billy Hart as a reliever — different jobs with different demands — but on the metrics that apply to both, a comparison is still worth making. Carl Mays posted stronger surface numbers — ERA 2.92 and WHIP 1.207 compared to 3.67 and 1.262 for Billy Hart. By the career numbers, Carl Mays had the better of this cross-role comparison — though era context would sharpen the verdict.

Pitching Stats for Billy Hart and Carl Mays

Billy Hart
Career
Per 9 Innings
1
1
Carl Mays
Careerverified
Per 9 Inningsverified
15
15
Billy Hart
Career
Per 9 Innings
26
1.16
Carl Mays
Careerverified
Per 9 Inningsverified
490
1.46
Billy Hart
Career
Per 9 Inningsverified
24
1.07
Carl Mays
Careerverified
Per 9 Innings
325
0.97
Billy Hart
Career
Per 9 Innings
12
0.54
Carl Mays
Careerverified
Per 9 Inningsverified
207
0.62
Billy Hart
Careerverified
Per 9 Inningsverified
8
0.36
Carl Mays
Career
Per 9 Innings
126
0.38
Billy Hart
Career
Per 9 Innings
60
60
Carl Mays
Careerverified
Per 9 Inningsverified
62.16
62.16
Billy Hart
Careerverified
Per 9 Inningsverified
92.31
92.31
Carl Mays
Career
Per 9 Innings
66.33
66.33
Billy Hart
Career
Per 9 Inningsverified
20
0.89
Carl Mays
Careerverified
Per 9 Innings
231
0.69
Billy Hart
Career
Per 9 Innings
0
0
Carl Mays
Careerverified
Per 9 Inningsverified
29
0.09
Billy Hart
Career
Per 9 Innings
0
0
Carl Mays
Careerverified
Per 9 Inningsverified
31
0.09
Billy Hart
Careerverified
Per 9 Innings
82
3.67
Carl Mays
Career
Per 9 Inningsverified
979
2.92
Billy Hart
Career
Per 9 Innings
3.67
3.67
Carl Mays
Careerverified
Per 9 Inningsverified
2.92
2.92
Billy Hart
Career
Per 9 Innings
3.21
3.21
Carl Mays
Careerverified
Per 9 Inningsverified
2.94
2.94
Billy Hart
Career
Per 9 Innings
3.67
3.67
Carl Mays
Careerverified
Per 9 Inningsverified
3.56
3.56
Billy Hart
Careerverified
Per 9 Inningsverified
0.24
0.24
Carl Mays
Career
Per 9 Innings
0.252
0.252
Billy Hart
Career
Per 9 Innings
604
27
Carl Mays
Careerverified
Per 9 Innings
9064
27
Billy Hart
Career
Per 9 Innings
201.1
9
Carl Mays
Careerverified
Per 9 Innings
3021.1
9
Billy Hart
Careerverified
Per 9 Inningsverified
188
8.4
Carl Mays
Career
Per 9 Innings
2912
8.67
Billy Hart
Careerverified
Per 9 Inningsverified
8.4
8.4
Carl Mays
Career
Per 9 Innings
8.67
8.67
Billy Hart
Careerverified
Per 9 Innings
6
0.27
Carl Mays
Career
Per 9 Inningsverified
73
0.22
Billy Hart
Career
Per 9 Innings
0.27
0.27
Carl Mays
Careerverified
Per 9 Inningsverified
0.22
0.22
Billy Hart
Career
Per 9 Innings
0.23
0.23
Carl Mays
Careerverified
Per 9 Inningsverified
0.15
0.15
Billy Hart
Careerverified
Per 9 Innings
66
2.95
Carl Mays
Career
Per 9 Inningsverified
734
2.19
Billy Hart
Career
Per 9 Innings
0
0
Carl Mays
Career
Per 9 Innings
0
0
Billy Hart
Career
Per 9 Innings
2.95
2.95
Carl Mays
Careerverified
Per 9 Inningsverified
2.19
2.19
Billy Hart
Career
Per 9 Inningsverified
95
4.25
Carl Mays
Careerverified
Per 9 Innings
862
2.57
Billy Hart
Careerverified
Per 9 Inningsverified
4.25
4.25
Carl Mays
Career
Per 9 Innings
2.57
2.57
Billy Hart
Careerverified
Per 9 Inningsverified
3.65
3.65
Carl Mays
Career
Per 9 Innings
1.76
1.76
Billy Hart
Careerverified
Per 9 Inningsverified
0.8
0.8
Carl Mays
Career
Per 9 Innings
0.528
0.528
Billy Hart
Careerverified
Per 9 Innings
12
0.54
Carl Mays
Career
Per 9 Inningsverified
34
0.1
Billy Hart
Careerverified
Per 9 Innings
16
0.72
Carl Mays
Career
Per 9 Inningsverified
89
0.27
Billy Hart
Careerverified
Per 9 Innings
0
0
Carl Mays
Career
Per 9 Innings
1
0
Billy Hart
Career
Per 9 Inningsverified
866
38.71
Carl Mays
Careerverified
Per 9 Innings
12385
36.89
Billy Hart
Career
Per 9 Innings
2
0.09
Carl Mays
Careerverified
Per 9 Inningsverified
125
0.37
Billy Hart
Careerverified
Per 9 Innings
111
4.96
Carl Mays
Career
Per 9 Inningsverified
1211
3.61
Billy Hart
Career
Per 9 Innings
4.96
4.96
Carl Mays
Careerverified
Per 9 Inningsverified
3.61
3.61
Billy Hart
Career
Per 9 Innings
0
0
Carl Mays
Career
Per 9 Innings
0
0
Billy Hart
Career
Per 9 Innings
0
0
Carl Mays
Career
Per 9 Innings
0
0
Billy Hart
Career
Per 9 Innings
0
0
Carl Mays
Career
Per 9 Innings
0
0
Billy Hart
Career
Per 9 Innings
1.262
1.262
Carl Mays
Careerverified
Per 9 Inningsverified
1.207
1.207
Billy Hart
Career
Per 9 Inningsverified
784
35.05
Carl Mays
Careerverified
Per 9 Innings
11562
34.44
Billy Hart
Career
Per 9 Innings
4.27
4.27
Carl Mays
Careerverified
Per 9 Inningsverified
2.47
2.47
Billy Hart
Career
Per 9 Innings
0.267
0.267
Carl Mays
Career
Per 9 Innings
0.267
0.267
Billy Hart
Careerverified
Per 9 Inningsverified
38.71
38.71
Carl Mays
Career
Per 9 Innings
36.89
36.89

Fielding Stats for Billy Hart and Carl Mays

Billy Hart
Career
Per 9 Inningsverified
1
1
Carl Mays
Careerverified
Per 9 Innings
15
Billy Hart
Career
Per 9 Inningsverified
27
1.19
Carl Mays
Careerverified
Per 9 Innings
490
Billy Hart
Career
Per 9 Innings
0
0
Carl Mays
Career
Per 9 Innings
0
Billy Hart
Careerverified
Per 9 Inningsverified
615
27
Carl Mays
Career
Per 9 Innings
0
Billy Hart
Careerverified
Per 9 Inningsverified
205
9
Carl Mays
Career
Per 9 Innings
0
Billy Hart
Career
Per 9 Inningsverified
8
0.35
Carl Mays
Careerverified
Per 9 Innings
174
Billy Hart
Career
Per 9 Inningsverified
24
1.05
Carl Mays
Careerverified
Per 9 Innings
1138
Billy Hart
Careerverified
Per 9 Innings
2
0.09
Carl Mays
Career
Per 9 Inningsverified
44
Billy Hart
Career
Per 9 Inningsverified
34
1.49
Carl Mays
Careerverified
Per 9 Innings
1356
Billy Hart
Career
Per 9 Inningsverified
32
1.4
Carl Mays
Careerverified
Per 9 Innings
1312
Billy Hart
Career
Per 9 Inningsverified
94.12
94.12
Carl Mays
Careerverified
Per 9 Innings
96.76
Billy Hart
Career
Per 9 Inningsverified
1.185
1.185
Carl Mays
Careerverified
Per 9 Innings
2.678
Billy Hart
Career
Per 9 Innings
0
0
Carl Mays
Career
Per 9 Innings
0
Billy Hart
Career
Per 9 Innings
0
0
Carl Mays
Careerverified
Per 9 Innings
56
Billy Hart
Career
Per 9 Innings
0
0
Carl Mays
Career
Per 9 Innings
0
Billy Hart
Career
Per 9 Innings
0
0
Carl Mays
Career
Per 9 Innings
0
Billy Hart
Career
Per 9 Innings
0
0
Carl Mays
Career
Per 9 Innings
0
Billy Hart
Career
Per 9 Innings
0
0
Carl Mays
Career
Per 9 Innings
0

Hitting Stats for Billy Hart and Carl Mays

Billy Hart
Career
Per 600 PA
1
1
Carl Mays
Careerverified
Per 600 PAverified
15
15
Billy Hart
Career
Per 600 PA
27
182.02
Carl Mays
Careerverified
Per 600 PAverified
502
251.21
Billy Hart
Career
Per 600 PA
89
600
Carl Mays
Careerverified
Per 600 PA
1199
600
Billy Hart
Career
Per 600 PA
78
525.84
Carl Mays
Careerverified
Per 600 PAverified
1085
542.95
Billy Hart
Career
Per 600 PA
0.192
0.192
Carl Mays
Careerverified
Per 600 PAverified
0.268
0.268
Billy Hart
Career
Per 600 PA
0.577
0.577
Carl Mays
Careerverified
Per 600 PAverified
0.684
0.684
Billy Hart
Career
Per 600 PA
15
101.12
Carl Mays
Careerverified
Per 600 PAverified
291
145.62
Billy Hart
Career
Per 600 PA
13
87.64
Carl Mays
Careerverified
Per 600 PAverified
233
116.6
Billy Hart
Career
Per 600 PA
1
6.74
Carl Mays
Careerverified
Per 600 PAverified
32
16.01
Billy Hart
Career
Per 600 PA
0
0
Carl Mays
Careerverified
Per 600 PAverified
21
10.51
Billy Hart
Career
Per 600 PAverified
1
6.74
Carl Mays
Careerverified
Per 600 PA
5
2.5
Billy Hart
Career
Per 600 PA
2
13.48
Carl Mays
Careerverified
Per 600 PAverified
58
29.02
Billy Hart
Career
Per 600 PA
0.133
0.133
Carl Mays
Careerverified
Per 600 PAverified
0.199
0.199
Billy Hart
Careerverified
Per 600 PAverified
0.013
0.013
Carl Mays
Career
Per 600 PA
0.005
0.005
Billy Hart
Careerverified
Per 600 PAverified
0.067
0.067
Carl Mays
Career
Per 600 PA
0.017
0.017
Billy Hart
Career
Per 600 PA
6.62
44.61
Carl Mays
Careerverified
Per 600 PAverified
121.02
60.56
Billy Hart
Career
Per 600 PA
19
128.09
Carl Mays
Careerverified
Per 600 PAverified
380
190.16
Billy Hart
Career
Per 600 PA
26
175.28
Carl Mays
Careerverified
Per 600 PAverified
361
180.65
Billy Hart
Career
Per 600 PA
0.292
0.292
Carl Mays
Careerverified
Per 600 PAverified
0.313
0.313
Billy Hart
Career
Per 600 PA
0.244
0.244
Carl Mays
Careerverified
Per 600 PAverified
0.35
0.35
Billy Hart
Career
Per 600 PA
0.536
0.536
Carl Mays
Careerverified
Per 600 PAverified
0.663
0.663
Billy Hart
Career
Per 600 PA
0.051
0.051
Carl Mays
Careerverified
Per 600 PAverified
0.082
0.082
Billy Hart
Career
Per 600 PA
0.192
0.192
Carl Mays
Careerverified
Per 600 PAverified
0.228
0.228
Billy Hart
Career
Per 600 PA
0.492
0.492
Carl Mays
Careerverified
Per 600 PAverified
0.567
0.567
Billy Hart
Career
Per 600 PA
0.182
0.182
Carl Mays
Careerverified
Per 600 PAverified
0.297
0.297
Billy Hart
Career
Per 600 PA
7
47.19
Carl Mays
Careerverified
Per 600 PAverified
113
56.55
Billy Hart
Career
Per 600 PA
8
53.93
Carl Mays
Careerverified
Per 600 PAverified
110
55.05
Billy Hart
Career
Per 600 PA
14
94.38
Carl Mays
Careerverified
Per 600 PAverified
218
109.09
Billy Hart
Career
Per 600 PA
7.35
49.55
Carl Mays
Careerverified
Per 600 PAverified
139.67
69.89
Billy Hart
Career
Per 600 PAverified
2
13.48
Carl Mays
Careerverified
Per 600 PA
4
2
Billy Hart
Career
Per 600 PAverified
9
60.67
Carl Mays
Careerverified
Per 600 PA
66
33.03
Billy Hart
Career
Per 600 PA
0
0
Carl Mays
Career
Per 600 PA
0
0
Billy Hart
Careerverified
Per 600 PAverified
0
0
Carl Mays
Career
Per 600 PA
116
58.05
Billy Hart
Career
Per 600 PA
Carl Mays
Careerverified
Per 600 PAverified
10.34
10.34
Billy Hart
Career
Per 600 PA
Carl Mays
Careerverified
Per 600 PAverified
0.57
0.57
Billy Hart
Career
Per 600 PA
0
0
Carl Mays
Careerverified
Per 600 PAverified
44
22.02
Billy Hart
Career
Per 600 PA
0
0
Carl Mays
Career
Per 600 PA
0
0
Billy Hart
Career
Per 600 PA
0
0
Carl Mays
Career
Per 600 PA
0
0
Billy Hart
Career
Per 600 PAverified
1
6.74
Carl Mays
Career
Per 600 PA
1
0.5
Billy Hart
Career
Per 600 PA
0
0
Carl Mays
Careerverified
Per 600 PAverified
1
0.5
Billy Hart
Career
Per 600 PAverified
1
6.74
Carl Mays
Careerverified
Per 600 PA
2
1
Billy Hart
Careerverified
Per 600 PAverified
100
100
Carl Mays
Career
Per 600 PA
50
50