Ron Mahay vs. Jeff Niemann — Career Comparison

Ron Mahay
Gen XIllinoisThrows LeftBats LeftNorth AmericaTexas RangersAmerican LeagueRelief Pitcher
Jeff Niemann
MillenialTexasThrows RightBats RightNorth AmericaTampa Bay RaysAmerican LeagueStarting Pitcher

Jeff Niemann built a career as a starting pitcher and Ron Mahay as a reliever — different jobs with different demands — but on the metrics that apply to both, a comparison is still worth making. Jeff Niemann led in home run suppression (HR9+ 99 vs 73), run prevention (ERA+ 105 vs 91), and skill-based run prevention (DICE+ 99 vs 86). Role difference aside, Jeff Niemann holds a clear edge on every meaningful shared measure.

Pitching Stats for Ron Mahay and Jeff Niemann

Ron Mahay
Careerverified
Per 9 Inningsverified
14
14
Jeff Niemann
Career
Per 9 Innings
5
5
Ron Mahay
Careerverified
Per 9 Inningsverified
514
8.14
Jeff Niemann
Career
Per 9 Innings
97
1.6
Ron Mahay
Career
Per 9 Innings
3
0.05
Jeff Niemann
Careerverified
Per 9 Inningsverified
92
1.52
Ron Mahay
Career
Per 9 Innings
27
0.43
Jeff Niemann
Careerverified
Per 9 Inningsverified
40
0.66
Ron Mahay
Careerverified
Per 9 Inningsverified
12
0.19
Jeff Niemann
Career
Per 9 Innings
26
0.43
Ron Mahay
Careerverified
Per 9 Inningsverified
69.23
69.23
Jeff Niemann
Career
Per 9 Innings
60.61
60.61
Ron Mahay
Career
Per 9 Innings
0.58
0.58
Jeff Niemann
Careerverified
Per 9 Inningsverified
94.85
94.85
Ron Mahay
Career
Per 9 Innings
0
0
Jeff Niemann
Careerverified
Per 9 Inningsverified
4
0.07
Ron Mahay
Career
Per 9 Innings
0
0
Jeff Niemann
Careerverified
Per 9 Inningsverified
3
0.05
Ron Mahay
Careerverified
Per 9 Inningsverified
4
0.06
Jeff Niemann
Career
Per 9 Innings
0
0
Ron Mahay
Careerverified
Per 9 Inningsverified
242
3.83
Jeff Niemann
Career
Per 9 Innings
247
4.08
Ron Mahay
Careerverified
Per 9 Inningsverified
3.83
3.83
Jeff Niemann
Career
Per 9 Innings
4.08
4.08
Ron Mahay
Career
Per 9 Innings
4.28
4.28
Jeff Niemann
Careerverified
Per 9 Inningsverified
3.86
3.86
Ron Mahay
Career
Per 9 Innings
4.52
4.52
Jeff Niemann
Careerverified
Per 9 Inningsverified
4.16
4.16
Ron Mahay
Careerverified
Per 9 Inningsverified
0.249
0.249
Jeff Niemann
Career
Per 9 Innings
0.251
0.251
Ron Mahay
Careerverified
Per 9 Innings
1704
27
Jeff Niemann
Career
Per 9 Innings
1633
27
Ron Mahay
Careerverified
Per 9 Innings
568
9
Jeff Niemann
Career
Per 9 Innings
544.1
9
Ron Mahay
Career
Per 9 Inningsverified
539
8.54
Jeff Niemann
Careerverified
Per 9 Innings
523
8.65
Ron Mahay
Careerverified
Per 9 Inningsverified
8.54
8.54
Jeff Niemann
Career
Per 9 Innings
8.65
8.65
Ron Mahay
Career
Per 9 Innings
75
1.19
Jeff Niemann
Careerverified
Per 9 Inningsverified
65
1.07
Ron Mahay
Career
Per 9 Innings
1.19
1.19
Jeff Niemann
Careerverified
Per 9 Inningsverified
1.07
1.07
Ron Mahay
Careerverified
Per 9 Inningsverified
0.15
0.15
Jeff Niemann
Career
Per 9 Innings
0.67
0.67
Ron Mahay
Career
Per 9 Innings
266
4.21
Jeff Niemann
Careerverified
Per 9 Inningsverified
177
2.93
Ron Mahay
Career
Per 9 Innings
22
0.35
Jeff Niemann
Careerverified
Per 9 Inningsverified
8
0.13
Ron Mahay
Career
Per 9 Innings
4.21
4.21
Jeff Niemann
Careerverified
Per 9 Inningsverified
2.93
2.93
Ron Mahay
Careerverified
Per 9 Inningsverified
470
7.45
Jeff Niemann
Career
Per 9 Innings
409
6.76
Ron Mahay
Careerverified
Per 9 Inningsverified
7.45
7.45
Jeff Niemann
Career
Per 9 Innings
6.76
6.76
Ron Mahay
Career
Per 9 Innings
0.91
0.91
Jeff Niemann
Careerverified
Per 9 Inningsverified
4.22
4.22
Ron Mahay
Careerverified
Per 9 Inningsverified
1.296
1.296
Jeff Niemann
Career
Per 9 Innings
1.077
1.077
Ron Mahay
Career
Per 9 Innings
28
0.44
Jeff Niemann
Careerverified
Per 9 Inningsverified
19
0.31
Ron Mahay
Careerverified
Per 9 Inningsverified
10
0.16
Jeff Niemann
Career
Per 9 Innings
24
0.4
Ron Mahay
Career
Per 9 Innings
1
0.02
Jeff Niemann
Careerverified
Per 9 Inningsverified
0
0
Ron Mahay
Careerverified
Per 9 Inningsverified
2474
39.2
Jeff Niemann
Career
Per 9 Innings
2306
38.13
Ron Mahay
Careerverified
Per 9 Inningsverified
100
1.58
Jeff Niemann
Career
Per 9 Innings
3
0.05
Ron Mahay
Career
Per 9 Inningsverified
273
4.33
Jeff Niemann
Careerverified
Per 9 Innings
264
4.36
Ron Mahay
Careerverified
Per 9 Inningsverified
4.33
4.33
Jeff Niemann
Career
Per 9 Innings
4.37
4.37
Ron Mahay
Career
Per 9 Innings
12
0.19
Jeff Niemann
Careerverified
Per 9 Inningsverified
11
0.18
Ron Mahay
Career
Per 9 Innings
19
0.3
Jeff Niemann
Careerverified
Per 9 Inningsverified
11
0.18
Ron Mahay
Career
Per 9 Innings
41
0.65
Jeff Niemann
Careerverified
Per 9 Inningsverified
46
0.76
Ron Mahay
Career
Per 9 Innings
1.417
1.417
Jeff Niemann
Careerverified
Per 9 Inningsverified
1.286
1.286
Ron Mahay
Careerverified
Per 9 Innings
2167
34.34
Jeff Niemann
Career
Per 9 Inningsverified
2083
34.44
Ron Mahay
Careerverified
Per 9 Inningsverified
0.53
0.53
Jeff Niemann
Career
Per 9 Innings
2.72
2.72
Ron Mahay
Career
Per 9 Innings
0.286
0.286
Jeff Niemann
Careerverified
Per 9 Inningsverified
0.285
0.285
Ron Mahay
Careerverified
Per 9 Inningsverified
39.2
39.2
Jeff Niemann
Career
Per 9 Innings
38.13
38.13

Fielding Stats for Ron Mahay and Jeff Niemann

Ron Mahay
Careerverified
Per 9 Inningsverified
15
15
Jeff Niemann
Career
Per 9 Innings
5
5
Ron Mahay
Careerverified
Per 9 Inningsverified
519
7.63
Jeff Niemann
Career
Per 9 Innings
97
1.6
Ron Mahay
Career
Per 9 Innings
8
0.12
Jeff Niemann
Careerverified
Per 9 Inningsverified
92
1.52
Ron Mahay
Careerverified
Per 9 Innings
1836
27
Jeff Niemann
Career
Per 9 Innings
1633
27
Ron Mahay
Careerverified
Per 9 Innings
612
9
Jeff Niemann
Career
Per 9 Innings
544.1
9
Ron Mahay
Careerverified
Per 9 Inningsverified
35
0.51
Jeff Niemann
Career
Per 9 Innings
29
0.48
Ron Mahay
Careerverified
Per 9 Innings
56
0.82
Jeff Niemann
Career
Per 9 Inningsverified
54
0.89
Ron Mahay
Career
Per 9 Innings
7
0.1
Jeff Niemann
Careerverified
Per 9 Inningsverified
1
0.02
Ron Mahay
Careerverified
Per 9 Inningsverified
98
1.44
Jeff Niemann
Career
Per 9 Innings
84
1.39
Ron Mahay
Careerverified
Per 9 Innings
91
1.34
Jeff Niemann
Career
Per 9 Inningsverified
83
1.37
Ron Mahay
Career
Per 9 Innings
92.86
92.86
Jeff Niemann
Careerverified
Per 9 Inningsverified
98.81
98.81
Ron Mahay
Career
Per 9 Innings
0.175
0.175
Jeff Niemann
Careerverified
Per 9 Inningsverified
0.856
0.856
Ron Mahay
Career
Per 9 Innings
1.54
1.54
Jeff Niemann
Careerverified
Per 9 Inningsverified
94.85
94.85
Ron Mahay
Career
Per 9 Innings
3
0.04
Jeff Niemann
Careerverified
Per 9 Inningsverified
8
0.13
Ron Mahay
Career
Per 9 Innings
0
0
Jeff Niemann
Career
Per 9 Innings
0
0
Ron Mahay
Career
Per 9 Innings
0
0
Jeff Niemann
Career
Per 9 Innings
0
0
Ron Mahay
Career
Per 9 Innings
0
0
Jeff Niemann
Career
Per 9 Innings
0
0
Ron Mahay
Career
Per 9 Innings
0
0
Jeff Niemann
Career
Per 9 Innings
0
0

Hitting Stats for Ron Mahay and Jeff Niemann

Ron Mahay
Careerverified
Per 600 PAverified
15
15
Jeff Niemann
Career
Per 600 PA
5
5
Ron Mahay
Careerverified
Per 600 PAverified
520
10400
Jeff Niemann
Career
Per 600 PA
97
4157.14
Ron Mahay
Careerverified
Per 600 PA
30
600
Jeff Niemann
Career
Per 600 PA
14
600
Ron Mahay
Careerverified
Per 600 PAverified
28
560
Jeff Niemann
Career
Per 600 PA
13
557.14
Ron Mahay
Careerverified
Per 600 PAverified
0.214
0.214
Jeff Niemann
Career
Per 600 PA
0.077
0.077
Ron Mahay
Careerverified
Per 600 PAverified
0.7
0.7
Jeff Niemann
Career
Per 600 PA
0.214
0.214
Ron Mahay
Careerverified
Per 600 PAverified
6
120
Jeff Niemann
Career
Per 600 PA
1
42.86
Ron Mahay
Careerverified
Per 600 PA
2
40
Jeff Niemann
Career
Per 600 PAverified
1
42.86
Ron Mahay
Careerverified
Per 600 PAverified
3
60
Jeff Niemann
Career
Per 600 PA
0
0
Ron Mahay
Career
Per 600 PA
0
0
Jeff Niemann
Career
Per 600 PA
0
0
Ron Mahay
Careerverified
Per 600 PAverified
1
20
Jeff Niemann
Career
Per 600 PA
0
0
Ron Mahay
Careerverified
Per 600 PAverified
4
80
Jeff Niemann
Career
Per 600 PA
0
0
Ron Mahay
Careerverified
Per 600 PAverified
0.667
0.667
Jeff Niemann
Career
Per 600 PA
0
0
Ron Mahay
Careerverified
Per 600 PAverified
0.036
0.036
Jeff Niemann
Career
Per 600 PA
0
0
Ron Mahay
Careerverified
Per 600 PAverified
0.167
0.167
Jeff Niemann
Career
Per 600 PA
0
0
Ron Mahay
Careerverified
Per 600 PAverified
3.39
67.89
Jeff Niemann
Career
Per 600 PA
0.07
2.93
Ron Mahay
Careerverified
Per 600 PAverified
12
240
Jeff Niemann
Career
Per 600 PA
1
42.86
Ron Mahay
Careerverified
Per 600 PAverified
8
160
Jeff Niemann
Career
Per 600 PA
1
42.86
Ron Mahay
Careerverified
Per 600 PAverified
0.267
0.267
Jeff Niemann
Career
Per 600 PA
0.077
0.077
Ron Mahay
Careerverified
Per 600 PAverified
0.429
0.429
Jeff Niemann
Career
Per 600 PA
0.077
0.077
Ron Mahay
Careerverified
Per 600 PAverified
0.695
0.695
Jeff Niemann
Career
Per 600 PA
0.154
0.154
Ron Mahay
Careerverified
Per 600 PAverified
0.214
0.214
Jeff Niemann
Career
Per 600 PA
0
0
Ron Mahay
Careerverified
Per 600 PAverified
0.227
0.227
Jeff Niemann
Career
Per 600 PA
0.054
0.054
Ron Mahay
Careerverified
Per 600 PAverified
0.636
0.636
Jeff Niemann
Career
Per 600 PA
0.083
0.083
Ron Mahay
Careerverified
Per 600 PAverified
0.263
0.263
Jeff Niemann
Career
Per 600 PA
0.25
0.25
Ron Mahay
Careerverified
Per 600 PAverified
3
60
Jeff Niemann
Career
Per 600 PA
0
0
Ron Mahay
Careerverified
Per 600 PAverified
3
60
Jeff Niemann
Career
Per 600 PA
0
0
Ron Mahay
Careerverified
Per 600 PAverified
5
100
Jeff Niemann
Career
Per 600 PA
0
0
Ron Mahay
Careerverified
Per 600 PAverified
3.09
61.84
Jeff Niemann
Career
Per 600 PA
-0.69
-29.45
Ron Mahay
Careerverified
Per 600 PAverified
1
20
Jeff Niemann
Career
Per 600 PA
0
0
Ron Mahay
Careerverified
Per 600 PAverified
1
20
Jeff Niemann
Career
Per 600 PA
0
0
Ron Mahay
Career
Per 600 PA
0
0
Jeff Niemann
Career
Per 600 PA
0
0
Ron Mahay
Careerverified
Per 600 PAverified
8
160
Jeff Niemann
Career
Per 600 PA
9
385.71
Ron Mahay
Careerverified
Per 600 PAverified
3.75
3.75
Jeff Niemann
Career
Per 600 PA
1.56
1.56
Ron Mahay
Careerverified
Per 600 PAverified
0.13
0.13
Jeff Niemann
Career
Per 600 PA
0
0
Ron Mahay
Career
Per 600 PA
0
0
Jeff Niemann
Careerverified
Per 600 PAverified
1
42.86
Ron Mahay
Career
Per 600 PA
0
0
Jeff Niemann
Career
Per 600 PA
0
0
Ron Mahay
Career
Per 600 PA
0
0
Jeff Niemann
Career
Per 600 PA
0
0
Ron Mahay
Career
Per 600 PA
0
0
Jeff Niemann
Career
Per 600 PA
0
0
Ron Mahay
Career
Per 600 PA
0
0
Jeff Niemann
Career
Per 600 PA
0
0
Ron Mahay
Career
Per 600 PA
0
0
Jeff Niemann
Career
Per 600 PA
0
0
Ron Mahay
Career
Per 600 PA
Jeff Niemann
Career
Per 600 PA