Dan Jennings vs. Joe Kiefer — Career Comparison

Dan Jennings
MillenialCaliforniaThrows LeftBats LeftNorth AmericaChicago White SoxAmerican LeagueRelief Pitcher
Joe Kiefer
Lost GenerationNew YorkThrows RightBats RightNorth AmericaBoston Red SoxAmerican LeagueStarting Pitcher

Joe Kiefer built a career as a starting pitcher and Dan Jennings as a reliever — different jobs with different demands — but on the metrics that apply to both, a comparison is still worth making. Dan Jennings posted stronger surface numbers — ERA 3.1 and WHIP 1.486 compared to 6.16 and 1.732 for Joe Kiefer. By the career numbers, Dan Jennings had the better of this cross-role comparison — though era context would sharpen the verdict.

Pitching Stats for Dan Jennings and Joe Kiefer

Dan Jennings
Careerverified
Per 9 Inningsverified
8
8
Joe Kiefer
Career
Per 9 Innings
3
3
Dan Jennings
Careerverified
Per 9 Inningsverified
390
10.07
Joe Kiefer
Career
Per 9 Innings
15
2.72
Dan Jennings
Career
Per 9 Innings
1
0.03
Joe Kiefer
Careerverified
Per 9 Inningsverified
4
0.72
Dan Jennings
Careerverified
Per 9 Inningsverified
17
0.44
Joe Kiefer
Career
Per 9 Innings
0
0
Dan Jennings
Career
Per 9 Inningsverified
20
0.52
Joe Kiefer
Careerverified
Per 9 Innings
5
0.91
Dan Jennings
Careerverified
Per 9 Inningsverified
45.95
45.95
Joe Kiefer
Career
Per 9 Innings
0
0
Dan Jennings
Career
Per 9 Innings
0.26
0.26
Joe Kiefer
Careerverified
Per 9 Inningsverified
26.67
26.67
Dan Jennings
Career
Per 9 Innings
0
0
Joe Kiefer
Career
Per 9 Innings
0
0
Dan Jennings
Career
Per 9 Innings
0
0
Joe Kiefer
Career
Per 9 Innings
0
0
Dan Jennings
Careerverified
Per 9 Inningsverified
2
0.05
Joe Kiefer
Career
Per 9 Innings
0
0
Dan Jennings
Career
Per 9 Inningsverified
120
3.1
Joe Kiefer
Careerverified
Per 9 Innings
34
6.16
Dan Jennings
Careerverified
Per 9 Inningsverified
3.1
3.1
Joe Kiefer
Career
Per 9 Innings
6.16
6.16
Dan Jennings
Careerverified
Per 9 Inningsverified
3.96
3.96
Joe Kiefer
Career
Per 9 Innings
5.42
5.42
Dan Jennings
Careerverified
Per 9 Inningsverified
3.74
3.74
Joe Kiefer
Career
Per 9 Innings
5.21
5.21
Dan Jennings
Careerverified
Per 9 Inningsverified
0.259
0.259
Joe Kiefer
Career
Per 9 Innings
0.277
0.277
Dan Jennings
Careerverified
Per 9 Innings
1046
27
Joe Kiefer
Career
Per 9 Innings
149
27
Dan Jennings
Careerverified
Per 9 Innings
348.2
9
Joe Kiefer
Career
Per 9 Innings
49.2
9
Dan Jennings
Career
Per 9 Inningsverified
341
8.8
Joe Kiefer
Careerverified
Per 9 Innings
56
10.15
Dan Jennings
Careerverified
Per 9 Inningsverified
8.8
8.8
Joe Kiefer
Career
Per 9 Innings
10.15
10.15
Dan Jennings
Career
Per 9 Innings
25
0.65
Joe Kiefer
Careerverified
Per 9 Inningsverified
2
0.36
Dan Jennings
Career
Per 9 Innings
0.65
0.65
Joe Kiefer
Careerverified
Per 9 Inningsverified
0.36
0.36
Dan Jennings
Careerverified
Per 9 Inningsverified
0.06
0.06
Joe Kiefer
Career
Per 9 Innings
0.13
0.13
Dan Jennings
Career
Per 9 Inningsverified
157
4.05
Joe Kiefer
Careerverified
Per 9 Innings
30
5.44
Dan Jennings
Career
Per 9 Innings
20
0.52
Joe Kiefer
Careerverified
Per 9 Inningsverified
0
0
Dan Jennings
Careerverified
Per 9 Inningsverified
4.05
4.05
Joe Kiefer
Career
Per 9 Innings
5.44
5.44
Dan Jennings
Careerverified
Per 9 Inningsverified
281
7.25
Joe Kiefer
Career
Per 9 Innings
9
1.63
Dan Jennings
Careerverified
Per 9 Inningsverified
7.25
7.25
Joe Kiefer
Career
Per 9 Innings
1.63
1.63
Dan Jennings
Careerverified
Per 9 Inningsverified
0.72
0.72
Joe Kiefer
Career
Per 9 Innings
0.6
0.6
Dan Jennings
Careerverified
Per 9 Inningsverified
1.256
1.256
Joe Kiefer
Career
Per 9 Innings
0.785
0.785
Dan Jennings
Career
Per 9 Innings
19
0.49
Joe Kiefer
Careerverified
Per 9 Inningsverified
1
0.18
Dan Jennings
Career
Per 9 Inningsverified
8
0.21
Joe Kiefer
Careerverified
Per 9 Innings
4
0.72
Dan Jennings
Career
Per 9 Innings
1
0.03
Joe Kiefer
Careerverified
Per 9 Inningsverified
0
0
Dan Jennings
Careerverified
Per 9 Innings
1512
39.03
Joe Kiefer
Career
Per 9 Inningsverified
236
42.77
Dan Jennings
Careerverified
Per 9 Inningsverified
77
1.99
Joe Kiefer
Career
Per 9 Innings
8
1.45
Dan Jennings
Career
Per 9 Inningsverified
141
3.64
Joe Kiefer
Careerverified
Per 9 Innings
39
7.07
Dan Jennings
Careerverified
Per 9 Inningsverified
3.64
3.64
Joe Kiefer
Career
Per 9 Innings
7.07
7.07
Dan Jennings
Career
Per 9 Innings
12
0.31
Joe Kiefer
Careerverified
Per 9 Inningsverified
0
0
Dan Jennings
Career
Per 9 Innings
16
0.41
Joe Kiefer
Careerverified
Per 9 Inningsverified
0
0
Dan Jennings
Careerverified
Per 9 Inningsverified
46
1.19
Joe Kiefer
Career
Per 9 Innings
0
0
Dan Jennings
Careerverified
Per 9 Inningsverified
1.428
1.428
Joe Kiefer
Career
Per 9 Innings
1.732
1.732
Dan Jennings
Careerverified
Per 9 Innings
1319
34.05
Joe Kiefer
Career
Per 9 Inningsverified
202
36.6
Dan Jennings
Careerverified
Per 9 Inningsverified
0.36
0.36
Joe Kiefer
Career
Per 9 Innings
2.6
2.6
Dan Jennings
Career
Per 9 Innings
0.312
0.312
Joe Kiefer
Careerverified
Per 9 Inningsverified
0.283
0.283
Dan Jennings
Career
Per 9 Innings
39.03
39.03
Joe Kiefer
Careerverified
Per 9 Inningsverified
42.77
42.77

Fielding Stats for Dan Jennings and Joe Kiefer

Dan Jennings
Careerverified
Per 9 Inningsverified
8
8
Joe Kiefer
Career
Per 9 Innings
3
Dan Jennings
Careerverified
Per 9 Inningsverified
390
10.07
Joe Kiefer
Career
Per 9 Innings
15
Dan Jennings
Careerverified
Per 9 Inningsverified
1
0.03
Joe Kiefer
Career
Per 9 Innings
0
Dan Jennings
Careerverified
Per 9 Inningsverified
1046
27
Joe Kiefer
Career
Per 9 Innings
0
Dan Jennings
Careerverified
Per 9 Inningsverified
348.2
9
Joe Kiefer
Career
Per 9 Innings
0
Dan Jennings
Careerverified
Per 9 Inningsverified
18
0.46
Joe Kiefer
Career
Per 9 Innings
1
Dan Jennings
Careerverified
Per 9 Inningsverified
54
1.39
Joe Kiefer
Career
Per 9 Innings
17
Dan Jennings
Career
Per 9 Innings
4
0.1
Joe Kiefer
Careerverified
Per 9 Inningsverified
2
Dan Jennings
Careerverified
Per 9 Inningsverified
76
1.96
Joe Kiefer
Career
Per 9 Innings
20
Dan Jennings
Careerverified
Per 9 Inningsverified
72
1.86
Joe Kiefer
Career
Per 9 Innings
18
Dan Jennings
Careerverified
Per 9 Inningsverified
94.74
94.74
Joe Kiefer
Career
Per 9 Innings
90
Dan Jennings
Career
Per 9 Inningsverified
0.185
0.185
Joe Kiefer
Careerverified
Per 9 Innings
1.2
Dan Jennings
Careerverified
Per 9 Inningsverified
0.26
0.26
Joe Kiefer
Career
Per 9 Innings
0
Dan Jennings
Careerverified
Per 9 Inningsverified
2
0.05
Joe Kiefer
Career
Per 9 Innings
1
Dan Jennings
Career
Per 9 Innings
0
0
Joe Kiefer
Career
Per 9 Innings
0
Dan Jennings
Career
Per 9 Innings
0
0
Joe Kiefer
Career
Per 9 Innings
0
Dan Jennings
Career
Per 9 Innings
0
0
Joe Kiefer
Career
Per 9 Innings
0
Dan Jennings
Career
Per 9 Innings
0
0
Joe Kiefer
Career
Per 9 Innings
0

Hitting Stats for Dan Jennings and Joe Kiefer

Dan Jennings
Careerverified
Per 600 PAverified
8
8
Joe Kiefer
Career
Per 600 PA
3
3
Dan Jennings
Careerverified
Per 600 PAverified
390
58500
Joe Kiefer
Career
Per 600 PA
15
692.31
Dan Jennings
Career
Per 600 PA
4
600
Joe Kiefer
Careerverified
Per 600 PA
13
600
Dan Jennings
Career
Per 600 PA
4
600
Joe Kiefer
Careerverified
Per 600 PA
13
600
Dan Jennings
Careerverified
Per 600 PAverified
0.5
0.5
Joe Kiefer
Career
Per 600 PA
0.077
0.077
Dan Jennings
Careerverified
Per 600 PAverified
1.25
1.25
Joe Kiefer
Career
Per 600 PA
0.231
0.231
Dan Jennings
Careerverified
Per 600 PAverified
2
300
Joe Kiefer
Career
Per 600 PA
1
46.15
Dan Jennings
Careerverified
Per 600 PAverified
1
150
Joe Kiefer
Career
Per 600 PA
0
0
Dan Jennings
Career
Per 600 PAverified
1
150
Joe Kiefer
Career
Per 600 PA
1
46.15
Dan Jennings
Career
Per 600 PA
0
0
Joe Kiefer
Career
Per 600 PA
0
0
Dan Jennings
Career
Per 600 PA
0
0
Joe Kiefer
Career
Per 600 PA
0
0
Dan Jennings
Career
Per 600 PAverified
1
150
Joe Kiefer
Career
Per 600 PA
1
46.15
Dan Jennings
Career
Per 600 PA
0.5
0.5
Joe Kiefer
Careerverified
Per 600 PAverified
1
1
Dan Jennings
Career
Per 600 PA
0
0
Joe Kiefer
Career
Per 600 PA
0
0
Dan Jennings
Career
Per 600 PA
0
0
Joe Kiefer
Career
Per 600 PA
0
0
Dan Jennings
Careerverified
Per 600 PAverified
1.25
186.79
Joe Kiefer
Career
Per 600 PA
0.17
7.75
Dan Jennings
Careerverified
Per 600 PAverified
3
450
Joe Kiefer
Career
Per 600 PA
2
92.31
Dan Jennings
Careerverified
Per 600 PAverified
2
300
Joe Kiefer
Career
Per 600 PA
1
46.15
Dan Jennings
Careerverified
Per 600 PAverified
0.5
0.5
Joe Kiefer
Career
Per 600 PA
0.077
0.077
Dan Jennings
Careerverified
Per 600 PAverified
0.75
0.75
Joe Kiefer
Career
Per 600 PA
0.154
0.154
Dan Jennings
Careerverified
Per 600 PAverified
1.25
1.25
Joe Kiefer
Career
Per 600 PA
0.231
0.231
Dan Jennings
Careerverified
Per 600 PAverified
0.25
0.25
Joe Kiefer
Career
Per 600 PA
0.077
0.077
Dan Jennings
Careerverified
Per 600 PAverified
0.413
0.413
Joe Kiefer
Career
Per 600 PA
0.073
0.073
Dan Jennings
Careerverified
Per 600 PAverified
1.5
1.5
Joe Kiefer
Career
Per 600 PA
0.167
0.167
Dan Jennings
Careerverified
Per 600 PAverified
0.667
0.667
Joe Kiefer
Career
Per 600 PA
0.1
0.1
Dan Jennings
Careerverified
Per 600 PAverified
1
150
Joe Kiefer
Career
Per 600 PA
0
0
Dan Jennings
Career
Per 600 PA
0
0
Joe Kiefer
Career
Per 600 PA
0
0
Dan Jennings
Careerverified
Per 600 PAverified
1
150
Joe Kiefer
Career
Per 600 PA
0
0
Dan Jennings
Careerverified
Per 600 PAverified
1.2
180.17
Joe Kiefer
Career
Per 600 PA
-0.53
-24.67
Dan Jennings
Career
Per 600 PA
0
0
Joe Kiefer
Career
Per 600 PA
0
0
Dan Jennings
Career
Per 600 PA
0
0
Joe Kiefer
Career
Per 600 PA
0
0
Dan Jennings
Career
Per 600 PA
0
0
Joe Kiefer
Career
Per 600 PA
0
0
Dan Jennings
Careerverified
Per 600 PA
1
150
Joe Kiefer
Career
Per 600 PAverified
3
138.46
Dan Jennings
Career
Per 600 PA
4
4
Joe Kiefer
Careerverified
Per 600 PAverified
4.33
4.33
Dan Jennings
Career
Per 600 PA
0
0
Joe Kiefer
Career
Per 600 PA
0
0
Dan Jennings
Career
Per 600 PA
0
0
Joe Kiefer
Career
Per 600 PA
0
0
Dan Jennings
Career
Per 600 PA
0
0
Joe Kiefer
Career
Per 600 PA
0
0
Dan Jennings
Career
Per 600 PA
0
0
Joe Kiefer
Career
Per 600 PA
0
0
Dan Jennings
Career
Per 600 PA
0
0
Joe Kiefer
Career
Per 600 PA
0
0
Dan Jennings
Career
Per 600 PA
0
0
Joe Kiefer
Career
Per 600 PA
0
0
Dan Jennings
Career
Per 600 PA
0
0
Joe Kiefer
Career
Per 600 PA
0
0
Dan Jennings
Career
Per 600 PA
Joe Kiefer
Career
Per 600 PA