Fred Hahn vs. Jason Jennings — Career Comparison

Fred Hahn
Silent GenerationNew YorkThrows LeftBats RightNorth AmericaSt. Louis CardinalsNational LeagueRelief Pitcher
Jason Jennings
Gen XTexasThrows RightBats LeftNorth AmericaColorado RockiesNational LeagueStarting PitcherRookie of the Year

Jason Jennings built a career as a starting pitcher and Fred Hahn as a reliever — different jobs with different demands — but on the metrics that apply to both, a comparison is still worth making. Fred Hahn posted stronger surface numbers — ERA 0 and WHIP 1.500 compared to 4.95 and 1.594 for Jason Jennings. By the career numbers, Fred Hahn had the better of this cross-role comparison — though era context would sharpen the verdict.

Pitching Stats for Fred Hahn and Jason Jennings

Fred Hahn
Career
Per 9 Innings
1
1
Jason Jennings
Careerverified
Per 9 Inningsverified
9
9
Fred Hahn
Career
Per 9 Inningsverified
1
4.5
Jason Jennings
Careerverified
Per 9 Innings
225
1.79
Fred Hahn
Career
Per 9 Innings
0
0
Jason Jennings
Careerverified
Per 9 Inningsverified
180
1.44
Fred Hahn
Career
Per 9 Innings
0
0
Jason Jennings
Careerverified
Per 9 Inningsverified
62
0.49
Fred Hahn
Careerverified
Per 9 Inningsverified
0
0
Jason Jennings
Career
Per 9 Innings
74
0.59
Fred Hahn
Career
Per 9 Innings
Jason Jennings
Careerverified
Per 9 Inningsverified
45.59
45.59
Fred Hahn
Career
Per 9 Innings
0
0
Jason Jennings
Careerverified
Per 9 Inningsverified
80
80
Fred Hahn
Career
Per 9 Innings
0
0
Jason Jennings
Careerverified
Per 9 Inningsverified
6
0.05
Fred Hahn
Career
Per 9 Innings
0
0
Jason Jennings
Careerverified
Per 9 Inningsverified
3
0.02
Fred Hahn
Career
Per 9 Innings
0
0
Jason Jennings
Careerverified
Per 9 Inningsverified
1
0.01
Fred Hahn
Careerverified
Per 9 Inningsverified
0
0
Jason Jennings
Career
Per 9 Innings
621
4.95
Fred Hahn
Careerverified
Per 9 Inningsverified
0
0
Jason Jennings
Career
Per 9 Innings
4.95
4.95
Fred Hahn
Careerverified
Per 9 Inningsverified
3.63
3.63
Jason Jennings
Career
Per 9 Innings
5.16
5.16
Fred Hahn
Careerverified
Per 9 Inningsverified
4.5
4.5
Jason Jennings
Career
Per 9 Innings
4.68
4.68
Fred Hahn
Careerverified
Per 9 Inningsverified
0.25
0.25
Jason Jennings
Career
Per 9 Innings
0.285
0.285
Fred Hahn
Career
Per 9 Innings
6
27
Jason Jennings
Careerverified
Per 9 Innings
3385
27
Fred Hahn
Career
Per 9 Innings
2
9
Jason Jennings
Careerverified
Per 9 Innings
1128.1
9
Fred Hahn
Careerverified
Per 9 Inningsverified
2
9
Jason Jennings
Career
Per 9 Innings
1253
9.99
Fred Hahn
Careerverified
Per 9 Inningsverified
9
9
Jason Jennings
Career
Per 9 Innings
9.99
9.99
Fred Hahn
Careerverified
Per 9 Inningsverified
0
0
Jason Jennings
Career
Per 9 Innings
137
1.09
Fred Hahn
Careerverified
Per 9 Inningsverified
0
0
Jason Jennings
Career
Per 9 Innings
1.09
1.09
Fred Hahn
Careerverified
Per 9 Inningsverified
0
0
Jason Jennings
Career
Per 9 Innings
0.61
0.61
Fred Hahn
Careerverified
Per 9 Innings
1
4.5
Jason Jennings
Career
Per 9 Inningsverified
505
4.03
Fred Hahn
Careerverified
Per 9 Inningsverified
0
0
Jason Jennings
Career
Per 9 Innings
41
0.33
Fred Hahn
Career
Per 9 Innings
4.5
4.5
Jason Jennings
Careerverified
Per 9 Inningsverified
4.03
4.03
Fred Hahn
Career
Per 9 Innings
0
0
Jason Jennings
Careerverified
Per 9 Inningsverified
749
5.97
Fred Hahn
Career
Per 9 Innings
0
0
Jason Jennings
Careerverified
Per 9 Inningsverified
5.97
5.97
Fred Hahn
Career
Per 9 Innings
0
0
Jason Jennings
Careerverified
Per 9 Inningsverified
3.33
3.33
Fred Hahn
Career
Per 9 Innings
0.5
0.5
Jason Jennings
Careerverified
Per 9 Inningsverified
1.111
1.111
Fred Hahn
Careerverified
Per 9 Inningsverified
0
0
Jason Jennings
Career
Per 9 Innings
51
0.41
Fred Hahn
Careerverified
Per 9 Inningsverified
0
0
Jason Jennings
Career
Per 9 Innings
34
0.27
Fred Hahn
Careerverified
Per 9 Inningsverified
0
0
Jason Jennings
Career
Per 9 Innings
1
0.01
Fred Hahn
Career
Per 9 Inningsverified
9
40.5
Jason Jennings
Careerverified
Per 9 Innings
5032
40.14
Fred Hahn
Career
Per 9 Inningsverified
1
4.5
Jason Jennings
Careerverified
Per 9 Innings
8
0.06
Fred Hahn
Careerverified
Per 9 Innings
2
9
Jason Jennings
Career
Per 9 Inningsverified
661
5.27
Fred Hahn
Career
Per 9 Innings
9
9
Jason Jennings
Careerverified
Per 9 Inningsverified
5.27
5.27
Fred Hahn
Careerverified
Per 9 Inningsverified
0
0
Jason Jennings
Career
Per 9 Innings
55
0.44
Fred Hahn
Careerverified
Per 9 Inningsverified
0
0
Jason Jennings
Career
Per 9 Innings
34
0.27
Fred Hahn
Career
Per 9 Innings
0
0
Jason Jennings
Careerverified
Per 9 Inningsverified
120
0.96
Fred Hahn
Careerverified
Per 9 Inningsverified
1.5
1.5
Jason Jennings
Career
Per 9 Innings
1.558
1.558
Fred Hahn
Career
Per 9 Inningsverified
8
36
Jason Jennings
Careerverified
Per 9 Innings
4404
35.13
Fred Hahn
Careerverified
Per 9 Inningsverified
2
2
Jason Jennings
Career
Per 9 Innings
2.94
2.94
Fred Hahn
Careerverified
Per 9 Inningsverified
0.25
0.25
Jason Jennings
Career
Per 9 Innings
0.317
0.317
Fred Hahn
Careerverified
Per 9 Inningsverified
40.5
40.5
Jason Jennings
Career
Per 9 Innings
40.14
40.14

Fielding Stats for Fred Hahn and Jason Jennings

Fred Hahn
Career
Per 9 Innings
1
Jason Jennings
Careerverified
Per 9 Inningsverified
9
9
Fred Hahn
Career
Per 9 Innings
1
Jason Jennings
Careerverified
Per 9 Inningsverified
225
1.79
Fred Hahn
Career
Per 9 Innings
0
Jason Jennings
Careerverified
Per 9 Inningsverified
180
1.44
Fred Hahn
Career
Per 9 Innings
0
Jason Jennings
Careerverified
Per 9 Inningsverified
3385
27
Fred Hahn
Career
Per 9 Innings
0
Jason Jennings
Careerverified
Per 9 Inningsverified
1128.1
9
Fred Hahn
Career
Per 9 Innings
0
Jason Jennings
Careerverified
Per 9 Inningsverified
84
0.67
Fred Hahn
Career
Per 9 Innings
1
Jason Jennings
Careerverified
Per 9 Inningsverified
141
1.12
Fred Hahn
Careerverified
Per 9 Inningsverified
0
Jason Jennings
Career
Per 9 Innings
9
0.07
Fred Hahn
Career
Per 9 Innings
1
Jason Jennings
Careerverified
Per 9 Inningsverified
234
1.87
Fred Hahn
Career
Per 9 Innings
1
Jason Jennings
Careerverified
Per 9 Inningsverified
225
1.79
Fred Hahn
Careerverified
Per 9 Innings
100
Jason Jennings
Career
Per 9 Inningsverified
96.15
96.15
Fred Hahn
Career
Per 9 Innings
1
Jason Jennings
Career
Per 9 Inningsverified
1
1
Fred Hahn
Career
Per 9 Innings
0
Jason Jennings
Careerverified
Per 9 Inningsverified
80
80
Fred Hahn
Career
Per 9 Innings
0
Jason Jennings
Careerverified
Per 9 Inningsverified
13
0.1
Fred Hahn
Career
Per 9 Innings
0
Jason Jennings
Career
Per 9 Innings
0
0
Fred Hahn
Career
Per 9 Innings
0
Jason Jennings
Career
Per 9 Innings
0
0
Fred Hahn
Career
Per 9 Innings
0
Jason Jennings
Career
Per 9 Innings
0
0
Fred Hahn
Career
Per 9 Innings
0
Jason Jennings
Career
Per 9 Innings
0
0

Hitting Stats for Fred Hahn and Jason Jennings

Fred Hahn
Career
Per 600 PA
1
Jason Jennings
Careerverified
Per 600 PAverified
9
9
Fred Hahn
Career
Per 600 PA
1
Jason Jennings
Careerverified
Per 600 PAverified
234
371.43
Fred Hahn
Career
Per 600 PA
0
Jason Jennings
Careerverified
Per 600 PAverified
378
600
Fred Hahn
Career
Per 600 PA
0
Jason Jennings
Careerverified
Per 600 PAverified
329
522.22
Fred Hahn
Career
Per 600 PA
Jason Jennings
Careerverified
Per 600 PAverified
0.207
0.207
Fred Hahn
Career
Per 600 PA
Jason Jennings
Careerverified
Per 600 PAverified
0.569
0.569
Fred Hahn
Career
Per 600 PA
0
Jason Jennings
Careerverified
Per 600 PAverified
68
107.94
Fred Hahn
Career
Per 600 PA
0
Jason Jennings
Careerverified
Per 600 PAverified
52
82.54
Fred Hahn
Career
Per 600 PA
0
Jason Jennings
Careerverified
Per 600 PAverified
14
22.22
Fred Hahn
Career
Per 600 PA
0
Jason Jennings
Career
Per 600 PA
0
0
Fred Hahn
Career
Per 600 PA
0
Jason Jennings
Careerverified
Per 600 PAverified
2
3.17
Fred Hahn
Career
Per 600 PA
0
Jason Jennings
Careerverified
Per 600 PAverified
16
25.4
Fred Hahn
Career
Per 600 PA
Jason Jennings
Careerverified
Per 600 PAverified
0.235
0.235
Fred Hahn
Career
Per 600 PA
Jason Jennings
Careerverified
Per 600 PAverified
0.006
0.006
Fred Hahn
Career
Per 600 PA
Jason Jennings
Careerverified
Per 600 PAverified
0.029
0.029
Fred Hahn
Career
Per 600 PA
Jason Jennings
Careerverified
Per 600 PAverified
23.11
36.69
Fred Hahn
Career
Per 600 PA
0
Jason Jennings
Careerverified
Per 600 PAverified
88
139.68
Fred Hahn
Career
Per 600 PA
0
Jason Jennings
Careerverified
Per 600 PAverified
88
139.68
Fred Hahn
Career
Per 600 PA
Jason Jennings
Careerverified
Per 600 PAverified
0.251
0.251
Fred Hahn
Career
Per 600 PA
Jason Jennings
Careerverified
Per 600 PAverified
0.268
0.268
Fred Hahn
Career
Per 600 PA
Jason Jennings
Careerverified
Per 600 PAverified
0.519
0.519
Fred Hahn
Career
Per 600 PA
Jason Jennings
Careerverified
Per 600 PAverified
0.061
0.061
Fred Hahn
Career
Per 600 PA
Jason Jennings
Careerverified
Per 600 PAverified
0.18
0.18
Fred Hahn
Career
Per 600 PA
Jason Jennings
Careerverified
Per 600 PAverified
0.412
0.412
Fred Hahn
Career
Per 600 PA
Jason Jennings
Careerverified
Per 600 PAverified
0.266
0.266
Fred Hahn
Career
Per 600 PA
0
Jason Jennings
Careerverified
Per 600 PAverified
18
28.57
Fred Hahn
Career
Per 600 PA
0
Jason Jennings
Careerverified
Per 600 PAverified
26
41.27
Fred Hahn
Career
Per 600 PA
0
Jason Jennings
Careerverified
Per 600 PAverified
42
66.67
Fred Hahn
Career
Per 600 PA
Jason Jennings
Careerverified
Per 600 PAverified
24.22
38.44
Fred Hahn
Career
Per 600 PA
0
Jason Jennings
Careerverified
Per 600 PAverified
1
1.59
Fred Hahn
Career
Per 600 PA
0
Jason Jennings
Careerverified
Per 600 PAverified
19
30.16
Fred Hahn
Career
Per 600 PA
0
Jason Jennings
Career
Per 600 PA
0
0
Fred Hahn
Careerverified
Per 600 PAverified
0
Jason Jennings
Career
Per 600 PA
80
126.98
Fred Hahn
Career
Per 600 PA
Jason Jennings
Careerverified
Per 600 PAverified
4.73
4.73
Fred Hahn
Career
Per 600 PA
Jason Jennings
Careerverified
Per 600 PAverified
0.24
0.24
Fred Hahn
Career
Per 600 PA
0
Jason Jennings
Careerverified
Per 600 PAverified
28
44.44
Fred Hahn
Career
Per 600 PA
0
Jason Jennings
Careerverified
Per 600 PAverified
1
1.59
Fred Hahn
Careerverified
Per 600 PAverified
0
Jason Jennings
Career
Per 600 PA
1
1.59
Fred Hahn
Career
Per 600 PA
0
Jason Jennings
Career
Per 600 PA
0
0
Fred Hahn
Career
Per 600 PA
0
Jason Jennings
Career
Per 600 PA
0
0
Fred Hahn
Career
Per 600 PA
0
Jason Jennings
Career
Per 600 PA
0
0
Fred Hahn
Career
Per 600 PA
Jason Jennings
Career
Per 600 PA