Lou Mahaffey vs. Jake Peavy — Career Comparison

Lou Mahaffey
Pre-GenerationalKentuckyThrows RightBats RightNorth AmericaLouisville ColonelsNational LeagueRelief Pitcher
Jake Peavy
MillenialAlabamaThrows RightBats RightNorth AmericaSan Diego PadresNational LeagueStarting PitcherCy Young AwardAll-Star

Jake Peavy built a career as a starting pitcher and Lou Mahaffey as a reliever — different jobs with different demands — but on the metrics that apply to both, a comparison is still worth making. Lou Mahaffey posted stronger surface numbers — ERA 3 and WHIP 1.667 compared to 3.63 and 1.213 for Jake Peavy. By the career numbers, Lou Mahaffey had the better of this cross-role comparison — though era context would sharpen the verdict.

Pitching Stats for Lou Mahaffey and Jake Peavy

Lou Mahaffey
Career
Per 9 Innings
1
1
Jake Peavy
Careerverified
Per 9 Inningsverified
15
15
Lou Mahaffey
Career
Per 9 Innings
1
1
Jake Peavy
Careerverified
Per 9 Inningsverified
388
1.47
Lou Mahaffey
Career
Per 9 Innings
1
1
Jake Peavy
Careerverified
Per 9 Inningsverified
377
1.43
Lou Mahaffey
Career
Per 9 Innings
0
0
Jake Peavy
Careerverified
Per 9 Inningsverified
152
0.58
Lou Mahaffey
Careerverified
Per 9 Innings
1
1
Jake Peavy
Career
Per 9 Inningsverified
126
0.48
Lou Mahaffey
Career
Per 9 Innings
0
0
Jake Peavy
Careerverified
Per 9 Inningsverified
54.68
54.68
Lou Mahaffey
Careerverified
Per 9 Inningsverified
100
100
Jake Peavy
Career
Per 9 Innings
97.16
97.16
Lou Mahaffey
Career
Per 9 Inningsverified
1
1
Jake Peavy
Careerverified
Per 9 Innings
15
0.06
Lou Mahaffey
Career
Per 9 Innings
0
0
Jake Peavy
Careerverified
Per 9 Inningsverified
6
0.02
Lou Mahaffey
Career
Per 9 Innings
0
0
Jake Peavy
Career
Per 9 Innings
0
0
Lou Mahaffey
Careerverified
Per 9 Inningsverified
3
3
Jake Peavy
Career
Per 9 Innings
960
3.63
Lou Mahaffey
Careerverified
Per 9 Inningsverified
3
3
Jake Peavy
Career
Per 9 Innings
3.63
3.63
Lou Mahaffey
Career
Per 9 Innings
4.55
4.55
Jake Peavy
Careerverified
Per 9 Inningsverified
3.3
3.3
Lou Mahaffey
Career
Per 9 Innings
4.44
4.44
Jake Peavy
Careerverified
Per 9 Inningsverified
3.55
3.55
Lou Mahaffey
Career
Per 9 Innings
0.278
0.278
Jake Peavy
Careerverified
Per 9 Inningsverified
0.239
0.239
Lou Mahaffey
Career
Per 9 Innings
27
27
Jake Peavy
Careerverified
Per 9 Innings
7131
27
Lou Mahaffey
Career
Per 9 Innings
9
9
Jake Peavy
Careerverified
Per 9 Innings
2377
9
Lou Mahaffey
Careerverified
Per 9 Innings
10
10
Jake Peavy
Career
Per 9 Inningsverified
2134
8.08
Lou Mahaffey
Career
Per 9 Innings
10
10
Jake Peavy
Careerverified
Per 9 Inningsverified
8.08
8.08
Lou Mahaffey
Careerverified
Per 9 Inningsverified
0
0
Jake Peavy
Career
Per 9 Innings
259
0.98
Lou Mahaffey
Careerverified
Per 9 Inningsverified
0
0
Jake Peavy
Career
Per 9 Innings
0.98
0.98
Lou Mahaffey
Careerverified
Per 9 Inningsverified
0
0
Jake Peavy
Career
Per 9 Innings
0.67
0.67
Lou Mahaffey
Careerverified
Per 9 Innings
5
5
Jake Peavy
Career
Per 9 Inningsverified
708
2.68
Lou Mahaffey
Careerverified
Per 9 Inningsverified
0
0
Jake Peavy
Career
Per 9 Innings
42
0.16
Lou Mahaffey
Career
Per 9 Innings
5
5
Jake Peavy
Careerverified
Per 9 Inningsverified
2.68
2.68
Lou Mahaffey
Career
Per 9 Innings
1
1
Jake Peavy
Careerverified
Per 9 Inningsverified
2207
8.36
Lou Mahaffey
Career
Per 9 Innings
1
1
Jake Peavy
Careerverified
Per 9 Inningsverified
8.36
8.36
Lou Mahaffey
Career
Per 9 Innings
1
1
Jake Peavy
Careerverified
Per 9 Inningsverified
5.69
5.69
Lou Mahaffey
Career
Per 9 Innings
0.667
0.667
Jake Peavy
Careerverified
Per 9 Inningsverified
1.226
1.226
Lou Mahaffey
Careerverified
Per 9 Innings
1
1
Jake Peavy
Career
Per 9 Inningsverified
46
0.17
Lou Mahaffey
Careerverified
Per 9 Inningsverified
0
0
Jake Peavy
Career
Per 9 Innings
78
0.3
Lou Mahaffey
Careerverified
Per 9 Inningsverified
0
0
Jake Peavy
Career
Per 9 Innings
14
0.05
Lou Mahaffey
Career
Per 9 Inningsverified
41
41
Jake Peavy
Careerverified
Per 9 Innings
9838
37.25
Lou Mahaffey
Career
Per 9 Innings
0
0
Jake Peavy
Careerverified
Per 9 Inningsverified
3
0.01
Lou Mahaffey
Careerverified
Per 9 Innings
9
9
Jake Peavy
Career
Per 9 Inningsverified
1011
3.83
Lou Mahaffey
Career
Per 9 Innings
9
9
Jake Peavy
Careerverified
Per 9 Inningsverified
3.83
3.83
Lou Mahaffey
Careerverified
Per 9 Inningsverified
0
0
Jake Peavy
Career
Per 9 Innings
63
0.24
Lou Mahaffey
Careerverified
Per 9 Inningsverified
0
0
Jake Peavy
Career
Per 9 Innings
62
0.23
Lou Mahaffey
Career
Per 9 Innings
0
0
Jake Peavy
Careerverified
Per 9 Inningsverified
166
0.63
Lou Mahaffey
Career
Per 9 Innings
1.667
1.667
Jake Peavy
Careerverified
Per 9 Inningsverified
1.196
1.196
Lou Mahaffey
Career
Per 9 Inningsverified
36
36
Jake Peavy
Careerverified
Per 9 Innings
8927
33.8
Lou Mahaffey
Career
Per 9 Innings
9
9
Jake Peavy
Careerverified
Per 9 Inningsverified
2.61
2.61
Lou Mahaffey
Careerverified
Per 9 Inningsverified
0.286
0.286
Jake Peavy
Career
Per 9 Innings
0.29
0.29
Lou Mahaffey
Careerverified
Per 9 Inningsverified
41
41
Jake Peavy
Career
Per 9 Innings
37.25
37.25

Fielding Stats for Lou Mahaffey and Jake Peavy

Lou Mahaffey
Career
Per 9 Innings
1
1
Jake Peavy
Careerverified
Per 9 Inningsverified
15
15
Lou Mahaffey
Career
Per 9 Innings
1
1
Jake Peavy
Careerverified
Per 9 Inningsverified
388
1.47
Lou Mahaffey
Career
Per 9 Innings
0
0
Jake Peavy
Careerverified
Per 9 Inningsverified
377
1.43
Lou Mahaffey
Career
Per 9 Innings
27
27
Jake Peavy
Careerverified
Per 9 Innings
7131
27
Lou Mahaffey
Career
Per 9 Innings
9
9
Jake Peavy
Careerverified
Per 9 Innings
2377
9
Lou Mahaffey
Career
Per 9 Innings
0
0
Jake Peavy
Careerverified
Per 9 Inningsverified
183
0.69
Lou Mahaffey
Career
Per 9 Innings
1
1
Jake Peavy
Careerverified
Per 9 Inningsverified
270
1.02
Lou Mahaffey
Careerverified
Per 9 Inningsverified
0
0
Jake Peavy
Career
Per 9 Innings
16
0.06
Lou Mahaffey
Career
Per 9 Innings
1
1
Jake Peavy
Careerverified
Per 9 Inningsverified
469
1.78
Lou Mahaffey
Career
Per 9 Innings
1
1
Jake Peavy
Careerverified
Per 9 Inningsverified
453
1.72
Lou Mahaffey
Careerverified
Per 9 Inningsverified
100
100
Jake Peavy
Career
Per 9 Innings
96.59
96.59
Lou Mahaffey
Career
Per 9 Innings
1
1
Jake Peavy
Careerverified
Per 9 Inningsverified
1.168
1.168
Lou Mahaffey
Career
Per 9 Innings
0
0
Jake Peavy
Careerverified
Per 9 Inningsverified
97.16
97.16
Lou Mahaffey
Career
Per 9 Innings
0
0
Jake Peavy
Careerverified
Per 9 Inningsverified
20
0.08
Lou Mahaffey
Career
Per 9 Innings
0
0
Jake Peavy
Career
Per 9 Innings
0
0
Lou Mahaffey
Career
Per 9 Innings
0
0
Jake Peavy
Career
Per 9 Innings
0
0
Lou Mahaffey
Career
Per 9 Innings
0
0
Jake Peavy
Career
Per 9 Innings
0
0
Lou Mahaffey
Career
Per 9 Innings
0
0
Jake Peavy
Career
Per 9 Innings
0
0

Hitting Stats for Lou Mahaffey and Jake Peavy

Lou Mahaffey
Career
Per 600 PA
1
1
Jake Peavy
Careerverified
Per 600 PAverified
15
15
Lou Mahaffey
Career
Per 600 PA
1
120
Jake Peavy
Careerverified
Per 600 PAverified
393
394.31
Lou Mahaffey
Career
Per 600 PA
5
600
Jake Peavy
Careerverified
Per 600 PA
598
600
Lou Mahaffey
Career
Per 600 PA
4
480
Jake Peavy
Careerverified
Per 600 PAverified
519
520.74
Lou Mahaffey
Career
Per 600 PA
0
0
Jake Peavy
Careerverified
Per 600 PAverified
0.168
0.168
Lou Mahaffey
Career
Per 600 PA
0.3
0.3
Jake Peavy
Careerverified
Per 600 PAverified
0.489
0.489
Lou Mahaffey
Career
Per 600 PA
0
0
Jake Peavy
Careerverified
Per 600 PAverified
87
87.29
Lou Mahaffey
Career
Per 600 PA
0
0
Jake Peavy
Careerverified
Per 600 PAverified
66
66.22
Lou Mahaffey
Career
Per 600 PA
0
0
Jake Peavy
Careerverified
Per 600 PAverified
17
17.06
Lou Mahaffey
Career
Per 600 PA
0
0
Jake Peavy
Careerverified
Per 600 PAverified
1
1
Lou Mahaffey
Career
Per 600 PA
0
0
Jake Peavy
Careerverified
Per 600 PAverified
3
3.01
Lou Mahaffey
Career
Per 600 PA
0
0
Jake Peavy
Careerverified
Per 600 PAverified
21
21.07
Lou Mahaffey
Career
Per 600 PA
Jake Peavy
Careerverified
Per 600 PAverified
0.241
0.241
Lou Mahaffey
Career
Per 600 PA
0
0
Jake Peavy
Careerverified
Per 600 PAverified
0.006
0.006
Lou Mahaffey
Career
Per 600 PA
Jake Peavy
Careerverified
Per 600 PAverified
0.035
0.035
Lou Mahaffey
Career
Per 600 PA
0.03
3.21
Jake Peavy
Careerverified
Per 600 PAverified
23.94
24.02
Lou Mahaffey
Career
Per 600 PA
0
0
Jake Peavy
Careerverified
Per 600 PAverified
115
115.38
Lou Mahaffey
Career
Per 600 PAverified
1
120
Jake Peavy
Careerverified
Per 600 PA
112
112.37
Lou Mahaffey
Career
Per 600 PA
0.2
0.2
Jake Peavy
Careerverified
Per 600 PAverified
0.205
0.205
Lou Mahaffey
Career
Per 600 PA
0
0
Jake Peavy
Careerverified
Per 600 PAverified
0.222
0.222
Lou Mahaffey
Career
Per 600 PA
0.2
0.2
Jake Peavy
Careerverified
Per 600 PAverified
0.427
0.427
Lou Mahaffey
Career
Per 600 PA
0
0
Jake Peavy
Careerverified
Per 600 PAverified
0.054
0.054
Lou Mahaffey
Career
Per 600 PA
0.09
0.09
Jake Peavy
Careerverified
Per 600 PAverified
0.148
0.148
Lou Mahaffey
Career
Per 600 PA
0.25
0.25
Jake Peavy
Careerverified
Per 600 PAverified
0.318
0.318
Lou Mahaffey
Career
Per 600 PA
0
0
Jake Peavy
Careerverified
Per 600 PAverified
0.238
0.238
Lou Mahaffey
Career
Per 600 PA
0
0
Jake Peavy
Careerverified
Per 600 PAverified
48
48.16
Lou Mahaffey
Career
Per 600 PA
0
0
Jake Peavy
Careerverified
Per 600 PAverified
33
33.11
Lou Mahaffey
Career
Per 600 PA
0
0
Jake Peavy
Careerverified
Per 600 PAverified
78
78.26
Lou Mahaffey
Career
Per 600 PA
-0.09
-11.33
Jake Peavy
Careerverified
Per 600 PAverified
18.53
18.59
Lou Mahaffey
Career
Per 600 PA
0
0
Jake Peavy
Careerverified
Per 600 PAverified
3
3.01
Lou Mahaffey
Career
Per 600 PAverified
1
120
Jake Peavy
Careerverified
Per 600 PA
22
22.07
Lou Mahaffey
Career
Per 600 PA
0
0
Jake Peavy
Career
Per 600 PA
0
0
Lou Mahaffey
Careerverified
Per 600 PAverified
1
120
Jake Peavy
Career
Per 600 PA
165
165.55
Lou Mahaffey
Careerverified
Per 600 PAverified
5
5
Jake Peavy
Career
Per 600 PA
3.62
3.62
Lou Mahaffey
Careerverified
Per 600 PAverified
1
1
Jake Peavy
Career
Per 600 PA
0.13
0.13
Lou Mahaffey
Career
Per 600 PA
0
0
Jake Peavy
Careerverified
Per 600 PAverified
52
52.17
Lou Mahaffey
Career
Per 600 PA
0
0
Jake Peavy
Careerverified
Per 600 PAverified
2
2.01
Lou Mahaffey
Careerverified
Per 600 PAverified
0
0
Jake Peavy
Career
Per 600 PA
6
6.02
Lou Mahaffey
Career
Per 600 PA
0
0
Jake Peavy
Career
Per 600 PA
0
0
Lou Mahaffey
Career
Per 600 PA
0
0
Jake Peavy
Careerverified
Per 600 PAverified
2
2.01
Lou Mahaffey
Career
Per 600 PA
0
0
Jake Peavy
Careerverified
Per 600 PAverified
2
2.01
Lou Mahaffey
Career
Per 600 PA
Jake Peavy
Career
Per 600 PA
0
0