Dan Jennings vs. Jim Mertz — Career Comparison

Dan Jennings
MillenialCaliforniaThrows LeftBats LeftNorth AmericaChicago White SoxAmerican LeagueRelief Pitcher
Jim Mertz
Greatest GenerationOhioThrows RightBats RightNorth AmericaWashington SenatorsAmerican LeagueStarting Pitcher

Jim Mertz 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 4.63 and 1.431 for Jim Mertz. 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 Jim Mertz

Dan Jennings
Careerverified
Per 9 Inningsverified
8
8
Jim Mertz
Career
Per 9 Innings
1
1
Dan Jennings
Careerverified
Per 9 Inningsverified
390
10.07
Jim Mertz
Career
Per 9 Innings
33
2.55
Dan Jennings
Career
Per 9 Innings
1
0.03
Jim Mertz
Careerverified
Per 9 Inningsverified
10
0.77
Dan Jennings
Careerverified
Per 9 Inningsverified
17
0.44
Jim Mertz
Career
Per 9 Innings
5
0.39
Dan Jennings
Career
Per 9 Inningsverified
20
0.52
Jim Mertz
Careerverified
Per 9 Innings
7
0.54
Dan Jennings
Careerverified
Per 9 Inningsverified
45.95
45.95
Jim Mertz
Career
Per 9 Innings
41.67
41.67
Dan Jennings
Career
Per 9 Innings
0.26
0.26
Jim Mertz
Careerverified
Per 9 Inningsverified
30.3
30.3
Dan Jennings
Career
Per 9 Innings
0
0
Jim Mertz
Careerverified
Per 9 Inningsverified
2
0.15
Dan Jennings
Career
Per 9 Innings
0
0
Jim Mertz
Career
Per 9 Innings
0
0
Dan Jennings
Career
Per 9 Innings
2
0.05
Jim Mertz
Careerverified
Per 9 Inningsverified
3
0.23
Dan Jennings
Career
Per 9 Inningsverified
120
3.1
Jim Mertz
Careerverified
Per 9 Innings
60
4.63
Dan Jennings
Careerverified
Per 9 Inningsverified
3.1
3.1
Jim Mertz
Career
Per 9 Innings
4.63
4.63
Dan Jennings
Career
Per 9 Innings
3.96
3.96
Jim Mertz
Careerverified
Per 9 Inningsverified
3.86
3.86
Dan Jennings
Careerverified
Per 9 Inningsverified
3.74
3.74
Jim Mertz
Career
Per 9 Innings
4.36
4.36
Dan Jennings
Career
Per 9 Innings
0.259
0.259
Jim Mertz
Careerverified
Per 9 Inningsverified
0.247
0.247
Dan Jennings
Careerverified
Per 9 Innings
1046
27
Jim Mertz
Career
Per 9 Innings
350
27
Dan Jennings
Careerverified
Per 9 Innings
348.2
9
Jim Mertz
Career
Per 9 Innings
116.2
9
Dan Jennings
Career
Per 9 Innings
341
8.8
Jim Mertz
Careerverified
Per 9 Inningsverified
109
8.41
Dan Jennings
Career
Per 9 Innings
8.8
8.8
Jim Mertz
Careerverified
Per 9 Inningsverified
8.41
8.41
Dan Jennings
Career
Per 9 Innings
25
0.65
Jim Mertz
Careerverified
Per 9 Inningsverified
7
0.54
Dan Jennings
Career
Per 9 Innings
0.65
0.65
Jim Mertz
Careerverified
Per 9 Inningsverified
0.54
0.54
Dan Jennings
Careerverified
Per 9 Inningsverified
0.06
0.06
Jim Mertz
Career
Per 9 Innings
0.21
0.21
Dan Jennings
Career
Per 9 Inningsverified
157
4.05
Jim Mertz
Careerverified
Per 9 Innings
58
4.47
Dan Jennings
Career
Per 9 Innings
20
0.52
Jim Mertz
Careerverified
Per 9 Inningsverified
0
0
Dan Jennings
Careerverified
Per 9 Inningsverified
4.05
4.05
Jim Mertz
Career
Per 9 Innings
4.47
4.47
Dan Jennings
Careerverified
Per 9 Inningsverified
281
7.25
Jim Mertz
Career
Per 9 Innings
53
4.09
Dan Jennings
Careerverified
Per 9 Inningsverified
7.25
7.25
Jim Mertz
Career
Per 9 Innings
4.09
4.09
Dan Jennings
Career
Per 9 Innings
0.72
0.72
Jim Mertz
Careerverified
Per 9 Inningsverified
1.61
1.61
Dan Jennings
Careerverified
Per 9 Inningsverified
1.256
1.256
Jim Mertz
Career
Per 9 Innings
0.951
0.951
Dan Jennings
Career
Per 9 Innings
19
0.49
Jim Mertz
Careerverified
Per 9 Inningsverified
2
0.15
Dan Jennings
Career
Per 9 Innings
8
0.21
Jim Mertz
Careerverified
Per 9 Inningsverified
0
0
Dan Jennings
Career
Per 9 Inningsverified
1
0.03
Jim Mertz
Career
Per 9 Innings
1
0.08
Dan Jennings
Careerverified
Per 9 Inningsverified
1512
39.03
Jim Mertz
Career
Per 9 Innings
499
38.49
Dan Jennings
Careerverified
Per 9 Inningsverified
77
1.99
Jim Mertz
Career
Per 9 Innings
12
0.93
Dan Jennings
Career
Per 9 Inningsverified
141
3.64
Jim Mertz
Careerverified
Per 9 Innings
65
5.01
Dan Jennings
Careerverified
Per 9 Inningsverified
3.64
3.64
Jim Mertz
Career
Per 9 Innings
5.01
5.01
Dan Jennings
Career
Per 9 Innings
12
0.31
Jim Mertz
Careerverified
Per 9 Inningsverified
0
0
Dan Jennings
Career
Per 9 Innings
16
0.41
Jim Mertz
Careerverified
Per 9 Inningsverified
0
0
Dan Jennings
Careerverified
Per 9 Inningsverified
46
1.19
Jim Mertz
Career
Per 9 Innings
0
0
Dan Jennings
Careerverified
Per 9 Inningsverified
1.428
1.428
Jim Mertz
Career
Per 9 Innings
1.431
1.431
Dan Jennings
Careerverified
Per 9 Inningsverified
1319
34.05
Jim Mertz
Career
Per 9 Innings
441
34.02
Dan Jennings
Careerverified
Per 9 Inningsverified
0.36
0.36
Jim Mertz
Career
Per 9 Innings
1.97
1.97
Dan Jennings
Career
Per 9 Innings
0.312
0.312
Jim Mertz
Careerverified
Per 9 Inningsverified
0.268
0.268
Dan Jennings
Careerverified
Per 9 Inningsverified
39.03
39.03
Jim Mertz
Career
Per 9 Innings
38.49
38.49

Fielding Stats for Dan Jennings and Jim Mertz

Dan Jennings
Careerverified
Per 9 Inningsverified
8
8
Jim Mertz
Career
Per 9 Innings
1
Dan Jennings
Careerverified
Per 9 Inningsverified
390
10.07
Jim Mertz
Career
Per 9 Innings
33
Dan Jennings
Careerverified
Per 9 Inningsverified
1
0.03
Jim Mertz
Career
Per 9 Innings
0
Dan Jennings
Careerverified
Per 9 Inningsverified
1046
27
Jim Mertz
Career
Per 9 Innings
0
Dan Jennings
Careerverified
Per 9 Inningsverified
348.2
9
Jim Mertz
Career
Per 9 Innings
0
Dan Jennings
Careerverified
Per 9 Inningsverified
18
0.46
Jim Mertz
Career
Per 9 Innings
3
Dan Jennings
Careerverified
Per 9 Inningsverified
54
1.39
Jim Mertz
Career
Per 9 Innings
26
Dan Jennings
Career
Per 9 Innings
4
0.1
Jim Mertz
Careerverified
Per 9 Inningsverified
3
Dan Jennings
Careerverified
Per 9 Inningsverified
76
1.96
Jim Mertz
Career
Per 9 Innings
32
Dan Jennings
Careerverified
Per 9 Inningsverified
72
1.86
Jim Mertz
Career
Per 9 Innings
29
Dan Jennings
Careerverified
Per 9 Inningsverified
94.74
94.74
Jim Mertz
Career
Per 9 Innings
90.63
Dan Jennings
Career
Per 9 Inningsverified
0.185
0.185
Jim Mertz
Careerverified
Per 9 Innings
0.879
Dan Jennings
Careerverified
Per 9 Inningsverified
0.26
0.26
Jim Mertz
Career
Per 9 Innings
0
Dan Jennings
Career
Per 9 Inningsverified
2
0.05
Jim Mertz
Career
Per 9 Innings
2
Dan Jennings
Career
Per 9 Innings
0
0
Jim Mertz
Career
Per 9 Innings
0
Dan Jennings
Career
Per 9 Innings
0
0
Jim Mertz
Career
Per 9 Innings
0
Dan Jennings
Career
Per 9 Innings
0
0
Jim Mertz
Career
Per 9 Innings
0
Dan Jennings
Career
Per 9 Innings
0
0
Jim Mertz
Career
Per 9 Innings
0

Hitting Stats for Dan Jennings and Jim Mertz

Dan Jennings
Careerverified
Per 600 PAverified
8
8
Jim Mertz
Career
Per 600 PA
1
1
Dan Jennings
Careerverified
Per 600 PAverified
390
58500
Jim Mertz
Career
Per 600 PA
33
460.47
Dan Jennings
Career
Per 600 PA
4
600
Jim Mertz
Careerverified
Per 600 PA
43
600
Dan Jennings
Career
Per 600 PAverified
4
600
Jim Mertz
Careerverified
Per 600 PA
38
530.23
Dan Jennings
Careerverified
Per 600 PAverified
0.5
0.5
Jim Mertz
Career
Per 600 PA
0.184
0.184
Dan Jennings
Careerverified
Per 600 PAverified
1.25
1.25
Jim Mertz
Career
Per 600 PA
0.512
0.512
Dan Jennings
Career
Per 600 PAverified
2
300
Jim Mertz
Careerverified
Per 600 PA
7
97.67
Dan Jennings
Career
Per 600 PAverified
1
150
Jim Mertz
Careerverified
Per 600 PA
6
83.72
Dan Jennings
Careerverified
Per 600 PAverified
1
150
Jim Mertz
Career
Per 600 PA
0
0
Dan Jennings
Career
Per 600 PA
0
0
Jim Mertz
Careerverified
Per 600 PAverified
1
13.95
Dan Jennings
Career
Per 600 PA
0
0
Jim Mertz
Career
Per 600 PA
0
0
Dan Jennings
Career
Per 600 PAverified
1
150
Jim Mertz
Career
Per 600 PA
1
13.95
Dan Jennings
Careerverified
Per 600 PAverified
0.5
0.5
Jim Mertz
Career
Per 600 PA
0.143
0.143
Dan Jennings
Career
Per 600 PA
0
0
Jim Mertz
Career
Per 600 PA
0
0
Dan Jennings
Career
Per 600 PA
0
0
Jim Mertz
Career
Per 600 PA
0
0
Dan Jennings
Career
Per 600 PAverified
1.25
186.79
Jim Mertz
Careerverified
Per 600 PA
1.88
26.28
Dan Jennings
Career
Per 600 PAverified
3
450
Jim Mertz
Careerverified
Per 600 PA
9
125.58
Dan Jennings
Career
Per 600 PAverified
2
300
Jim Mertz
Careerverified
Per 600 PA
9
125.58
Dan Jennings
Careerverified
Per 600 PAverified
0.5
0.5
Jim Mertz
Career
Per 600 PA
0.225
0.225
Dan Jennings
Careerverified
Per 600 PAverified
0.75
0.75
Jim Mertz
Career
Per 600 PA
0.237
0.237
Dan Jennings
Careerverified
Per 600 PAverified
1.25
1.25
Jim Mertz
Career
Per 600 PA
0.462
0.462
Dan Jennings
Careerverified
Per 600 PAverified
0.25
0.25
Jim Mertz
Career
Per 600 PA
0.053
0.053
Dan Jennings
Careerverified
Per 600 PAverified
0.413
0.413
Jim Mertz
Career
Per 600 PA
0.161
0.161
Dan Jennings
Careerverified
Per 600 PAverified
1.5
1.5
Jim Mertz
Career
Per 600 PA
0.344
0.344
Dan Jennings
Careerverified
Per 600 PAverified
0.667
0.667
Jim Mertz
Career
Per 600 PA
0.28
0.28
Dan Jennings
Career
Per 600 PAverified
1
150
Jim Mertz
Careerverified
Per 600 PA
3
41.86
Dan Jennings
Career
Per 600 PA
0
0
Jim Mertz
Careerverified
Per 600 PAverified
3
41.86
Dan Jennings
Career
Per 600 PAverified
1
150
Jim Mertz
Careerverified
Per 600 PA
6
83.72
Dan Jennings
Career
Per 600 PAverified
1.2
180.17
Jim Mertz
Careerverified
Per 600 PA
1.83
25.55
Dan Jennings
Career
Per 600 PA
0
0
Jim Mertz
Career
Per 600 PA
0
0
Dan Jennings
Career
Per 600 PA
0
0
Jim Mertz
Careerverified
Per 600 PAverified
2
27.91
Dan Jennings
Career
Per 600 PA
0
0
Jim Mertz
Career
Per 600 PA
0
0
Dan Jennings
Careerverified
Per 600 PAverified
1
150
Jim Mertz
Career
Per 600 PA
13
181.4
Dan Jennings
Careerverified
Per 600 PAverified
4
4
Jim Mertz
Career
Per 600 PA
3.31
3.31
Dan Jennings
Career
Per 600 PA
0
0
Jim Mertz
Careerverified
Per 600 PAverified
0.15
0.15
Dan Jennings
Career
Per 600 PA
0
0
Jim Mertz
Careerverified
Per 600 PAverified
3
41.86
Dan Jennings
Career
Per 600 PA
0
0
Jim Mertz
Career
Per 600 PA
0
0
Dan Jennings
Careerverified
Per 600 PAverified
0
0
Jim Mertz
Career
Per 600 PA
1
13.95
Dan Jennings
Career
Per 600 PA
0
0
Jim Mertz
Career
Per 600 PA
0
0
Dan Jennings
Career
Per 600 PA
0
0
Jim Mertz
Career
Per 600 PA
0
0
Dan Jennings
Career
Per 600 PA
0
0
Jim Mertz
Career
Per 600 PA
0
0
Dan Jennings
Career
Per 600 PA
Jim Mertz
Career
Per 600 PA