Jerry Koosman vs. Chris Mahoney — Career Comparison

Jerry Koosman
Silent GenerationMinnesotaThrows LeftBats RightNorth AmericaNew York MetsNational LeagueStarting PitcherAll-Star
Chris Mahoney
Lost GenerationMassachusettsThrows RightBats RightNorth AmericaBoston Red SoxAmerican LeagueStarting Pitcher

Looking at the career totals, Jerry Koosman and Chris Mahoney are fairly close on the surface numbers. Jerry Koosman had the edge in WHIP (1.290 vs 1.909). By the career numbers, Jerry Koosman had the better of this comparison — though ERA and WHIP alone don't account for era, park factors, or the defenses each pitcher worked behind.

Pitching Stats for Jerry Koosman and Chris Mahoney

Jerry Koosman
Careerverified
Per 9 Inningsverified
19
19
Chris Mahoney
Career
Per 9 Innings
1
1
Jerry Koosman
Careerverified
Per 9 Innings
612
1.43
Chris Mahoney
Career
Per 9 Inningsverified
2
1.64
Jerry Koosman
Careerverified
Per 9 Inningsverified
527
1.24
Chris Mahoney
Career
Per 9 Innings
1
0.82
Jerry Koosman
Careerverified
Per 9 Inningsverified
222
0.52
Chris Mahoney
Career
Per 9 Innings
0
0
Jerry Koosman
Career
Per 9 Inningsverified
209
0.49
Chris Mahoney
Careerverified
Per 9 Innings
1
0.82
Jerry Koosman
Careerverified
Per 9 Inningsverified
51.51
51.51
Chris Mahoney
Career
Per 9 Innings
0
0
Jerry Koosman
Careerverified
Per 9 Inningsverified
86.11
86.11
Chris Mahoney
Career
Per 9 Innings
50
50
Jerry Koosman
Careerverified
Per 9 Inningsverified
140
0.33
Chris Mahoney
Career
Per 9 Innings
0
0
Jerry Koosman
Careerverified
Per 9 Inningsverified
33
0.08
Chris Mahoney
Career
Per 9 Innings
0
0
Jerry Koosman
Careerverified
Per 9 Innings
17
0.04
Chris Mahoney
Career
Per 9 Inningsverified
1
0.82
Jerry Koosman
Career
Per 9 Innings
1433
3.36
Chris Mahoney
Careerverified
Per 9 Inningsverified
4
3.27
Jerry Koosman
Career
Per 9 Innings
3.36
3.36
Chris Mahoney
Careerverified
Per 9 Inningsverified
3.27
3.27
Jerry Koosman
Careerverified
Per 9 Inningsverified
3.33
3.33
Chris Mahoney
Career
Per 9 Innings
6.79
6.79
Jerry Koosman
Careerverified
Per 9 Inningsverified
3.64
3.64
Chris Mahoney
Career
Per 9 Innings
4.45
4.45
Jerry Koosman
Careerverified
Per 9 Inningsverified
0.252
0.252
Chris Mahoney
Career
Per 9 Innings
0.327
0.327
Jerry Koosman
Careerverified
Per 9 Innings
11518
27
Chris Mahoney
Career
Per 9 Innings
33
27
Jerry Koosman
Careerverified
Per 9 Innings
3839.1
9
Chris Mahoney
Career
Per 9 Innings
11
9
Jerry Koosman
Career
Per 9 Inningsverified
3635
8.52
Chris Mahoney
Careerverified
Per 9 Innings
16
13.09
Jerry Koosman
Careerverified
Per 9 Inningsverified
8.52
8.52
Chris Mahoney
Career
Per 9 Innings
13.09
13.09
Jerry Koosman
Career
Per 9 Inningsverified
290
0.68
Chris Mahoney
Careerverified
Per 9 Innings
1
0.82
Jerry Koosman
Careerverified
Per 9 Inningsverified
0.68
0.68
Chris Mahoney
Career
Per 9 Innings
0.82
0.82
Jerry Koosman
Careerverified
Per 9 Inningsverified
0.47
0.47
Chris Mahoney
Career
Per 9 Innings
0.5
0.5
Jerry Koosman
Career
Per 9 Inningsverified
1198
2.81
Chris Mahoney
Careerverified
Per 9 Innings
5
4.09
Jerry Koosman
Career
Per 9 Innings
121
0.28
Chris Mahoney
Careerverified
Per 9 Inningsverified
0
0
Jerry Koosman
Careerverified
Per 9 Inningsverified
2.81
2.81
Chris Mahoney
Career
Per 9 Innings
4.09
4.09
Jerry Koosman
Careerverified
Per 9 Inningsverified
2556
5.99
Chris Mahoney
Career
Per 9 Innings
6
4.91
Jerry Koosman
Careerverified
Per 9 Inningsverified
5.99
5.99
Chris Mahoney
Career
Per 9 Innings
4.91
4.91
Jerry Koosman
Careerverified
Per 9 Inningsverified
4.18
4.18
Chris Mahoney
Career
Per 9 Innings
3
3
Jerry Koosman
Career
Per 9 Innings
0.978
0.978
Chris Mahoney
Careerverified
Per 9 Inningsverified
1
1
Jerry Koosman
Career
Per 9 Innings
89
0.21
Chris Mahoney
Careerverified
Per 9 Inningsverified
0
0
Jerry Koosman
Career
Per 9 Innings
71
0.17
Chris Mahoney
Careerverified
Per 9 Inningsverified
0
0
Jerry Koosman
Career
Per 9 Innings
29
0.07
Chris Mahoney
Careerverified
Per 9 Inningsverified
0
0
Jerry Koosman
Careerverified
Per 9 Innings
15996
37.5
Chris Mahoney
Career
Per 9 Inningsverified
54
44.18
Jerry Koosman
Careerverified
Per 9 Innings
43
0.1
Chris Mahoney
Career
Per 9 Inningsverified
1
0.82
Jerry Koosman
Career
Per 9 Inningsverified
1608
3.77
Chris Mahoney
Careerverified
Per 9 Innings
11
9
Jerry Koosman
Careerverified
Per 9 Inningsverified
3.77
3.77
Chris Mahoney
Career
Per 9 Innings
9
9
Jerry Koosman
Career
Per 9 Innings
173
0.41
Chris Mahoney
Careerverified
Per 9 Inningsverified
0
0
Jerry Koosman
Career
Per 9 Innings
98
0.23
Chris Mahoney
Careerverified
Per 9 Inningsverified
0
0
Jerry Koosman
Careerverified
Per 9 Inningsverified
230
0.54
Chris Mahoney
Career
Per 9 Innings
0
0
Jerry Koosman
Careerverified
Per 9 Inningsverified
1.259
1.259
Chris Mahoney
Career
Per 9 Innings
1.909
1.909
Jerry Koosman
Careerverified
Per 9 Innings
14456
33.89
Chris Mahoney
Career
Per 9 Inningsverified
49
40.09
Jerry Koosman
Careerverified
Per 9 Inningsverified
2.63
2.63
Chris Mahoney
Career
Per 9 Innings
5.5
5.5
Jerry Koosman
Careerverified
Per 9 Inningsverified
0.288
0.288
Chris Mahoney
Career
Per 9 Innings
0.357
0.357
Jerry Koosman
Career
Per 9 Innings
37.5
37.5
Chris Mahoney
Careerverified
Per 9 Inningsverified
44.18
44.18

Fielding Stats for Jerry Koosman and Chris Mahoney

Jerry Koosman
Careerverified
Per 9 Inningsverified
19
19
Chris Mahoney
Career
Per 9 Innings
1
1
Jerry Koosman
Careerverified
Per 9 Inningsverified
612
1.43
Chris Mahoney
Career
Per 9 Innings
3
1.42
Jerry Koosman
Careerverified
Per 9 Inningsverified
527
1.24
Chris Mahoney
Career
Per 9 Innings
2
0.95
Jerry Koosman
Careerverified
Per 9 Innings
11519
27
Chris Mahoney
Career
Per 9 Innings
57
27
Jerry Koosman
Careerverified
Per 9 Innings
3839.2
9
Chris Mahoney
Career
Per 9 Innings
19
9
Jerry Koosman
Careerverified
Per 9 Innings
116
0.27
Chris Mahoney
Career
Per 9 Inningsverified
1
0.47
Jerry Koosman
Careerverified
Per 9 Innings
582
1.36
Chris Mahoney
Career
Per 9 Inningsverified
6
2.84
Jerry Koosman
Career
Per 9 Innings
42
0.1
Chris Mahoney
Careerverified
Per 9 Inningsverified
0
0
Jerry Koosman
Careerverified
Per 9 Innings
740
1.73
Chris Mahoney
Career
Per 9 Inningsverified
7
3.32
Jerry Koosman
Careerverified
Per 9 Innings
698
1.64
Chris Mahoney
Career
Per 9 Inningsverified
7
3.32
Jerry Koosman
Career
Per 9 Innings
94.32
94.32
Chris Mahoney
Careerverified
Per 9 Inningsverified
100
100
Jerry Koosman
Career
Per 9 Innings
1.141
1.141
Chris Mahoney
Careerverified
Per 9 Inningsverified
2.333
2.333
Jerry Koosman
Careerverified
Per 9 Inningsverified
86.11
86.11
Chris Mahoney
Career
Per 9 Innings
66.67
66.67
Jerry Koosman
Careerverified
Per 9 Innings
36
0.08
Chris Mahoney
Career
Per 9 Inningsverified
1
0.47
Jerry Koosman
Career
Per 9 Innings
0
0
Chris Mahoney
Career
Per 9 Innings
0
0
Jerry Koosman
Career
Per 9 Innings
0
0
Chris Mahoney
Career
Per 9 Innings
0
0
Jerry Koosman
Career
Per 9 Innings
0
0
Chris Mahoney
Career
Per 9 Innings
0
0
Jerry Koosman
Career
Per 9 Innings
0
0
Chris Mahoney
Career
Per 9 Innings
0
0

Hitting Stats for Jerry Koosman and Chris Mahoney

Jerry Koosman
Careerverified
Per 600 PAverified
19
19
Chris Mahoney
Career
Per 600 PA
1
1
Jerry Koosman
Careerverified
Per 600 PAverified
612
349.05
Chris Mahoney
Career
Per 600 PA
3
257.14
Jerry Koosman
Careerverified
Per 600 PA
1052
600
Chris Mahoney
Career
Per 600 PA
7
600
Jerry Koosman
Careerverified
Per 600 PA
915
521.86
Chris Mahoney
Career
Per 600 PAverified
7
600
Jerry Koosman
Career
Per 600 PA
0.119
0.119
Chris Mahoney
Careerverified
Per 600 PAverified
0.143
0.143
Jerry Koosman
Careerverified
Per 600 PAverified
0.374
0.374
Chris Mahoney
Career
Per 600 PA
0.286
0.286
Jerry Koosman
Careerverified
Per 600 PA
109
62.17
Chris Mahoney
Career
Per 600 PAverified
1
85.71
Jerry Koosman
Careerverified
Per 600 PA
94
53.61
Chris Mahoney
Career
Per 600 PAverified
1
85.71
Jerry Koosman
Careerverified
Per 600 PAverified
12
6.84
Chris Mahoney
Career
Per 600 PA
0
0
Jerry Koosman
Careerverified
Per 600 PAverified
1
0.57
Chris Mahoney
Career
Per 600 PA
0
0
Jerry Koosman
Careerverified
Per 600 PAverified
2
1.14
Chris Mahoney
Career
Per 600 PA
0
0
Jerry Koosman
Careerverified
Per 600 PAverified
15
8.56
Chris Mahoney
Career
Per 600 PA
0
0
Jerry Koosman
Careerverified
Per 600 PAverified
0.138
0.138
Chris Mahoney
Career
Per 600 PA
0
0
Jerry Koosman
Careerverified
Per 600 PAverified
0.002
0.002
Chris Mahoney
Career
Per 600 PA
0
0
Jerry Koosman
Careerverified
Per 600 PAverified
0.018
0.018
Chris Mahoney
Career
Per 600 PA
0
0
Jerry Koosman
Careerverified
Per 600 PA
18.19
10.37
Chris Mahoney
Career
Per 600 PAverified
0.13
10.96
Jerry Koosman
Careerverified
Per 600 PA
129
73.57
Chris Mahoney
Career
Per 600 PAverified
1
85.71
Jerry Koosman
Careerverified
Per 600 PA
144
82.13
Chris Mahoney
Career
Per 600 PAverified
1
85.71
Jerry Koosman
Careerverified
Per 600 PAverified
0.151
0.151
Chris Mahoney
Career
Per 600 PA
0.143
0.143
Jerry Koosman
Career
Per 600 PA
0.141
0.141
Chris Mahoney
Careerverified
Per 600 PAverified
0.143
0.143
Jerry Koosman
Careerverified
Per 600 PAverified
0.292
0.292
Chris Mahoney
Career
Per 600 PA
0.286
0.286
Jerry Koosman
Careerverified
Per 600 PAverified
0.022
0.022
Chris Mahoney
Career
Per 600 PA
0
0
Jerry Koosman
Careerverified
Per 600 PAverified
0.103
0.103
Chris Mahoney
Career
Per 600 PA
0.1
0.1
Jerry Koosman
Careerverified
Per 600 PAverified
0.2
0.2
Chris Mahoney
Career
Per 600 PA
0.167
0.167
Jerry Koosman
Careerverified
Per 600 PAverified
0.215
0.215
Chris Mahoney
Career
Per 600 PA
0.167
0.167
Jerry Koosman
Careerverified
Per 600 PA
36
20.53
Chris Mahoney
Career
Per 600 PAverified
1
85.71
Jerry Koosman
Careerverified
Per 600 PAverified
46
26.24
Chris Mahoney
Career
Per 600 PA
0
0
Jerry Koosman
Careerverified
Per 600 PA
80
45.63
Chris Mahoney
Career
Per 600 PAverified
1
85.71
Jerry Koosman
Career
Per 600 PA
-9.7
-5.53
Chris Mahoney
Careerverified
Per 600 PAverified
-0.02
-2.13
Jerry Koosman
Careerverified
Per 600 PAverified
2
1.14
Chris Mahoney
Career
Per 600 PA
0
0
Jerry Koosman
Careerverified
Per 600 PAverified
33
18.82
Chris Mahoney
Career
Per 600 PA
0
0
Jerry Koosman
Career
Per 600 PA
0
0
Chris Mahoney
Career
Per 600 PA
0
0
Jerry Koosman
Career
Per 600 PA
418
238.4
Chris Mahoney
Careerverified
Per 600 PAverified
1
85.71
Jerry Koosman
Career
Per 600 PA
2.52
2.52
Chris Mahoney
Careerverified
Per 600 PAverified
7
7
Jerry Koosman
Careerverified
Per 600 PAverified
0.08
0.08
Chris Mahoney
Career
Per 600 PA
0
0
Jerry Koosman
Careerverified
Per 600 PAverified
100
57.03
Chris Mahoney
Career
Per 600 PA
0
0
Jerry Koosman
Careerverified
Per 600 PAverified
2
1.14
Chris Mahoney
Career
Per 600 PA
0
0
Jerry Koosman
Career
Per 600 PA
19
10.84
Chris Mahoney
Careerverified
Per 600 PAverified
0
0
Jerry Koosman
Careerverified
Per 600 PAverified
1
0.57
Chris Mahoney
Career
Per 600 PA
0
0
Jerry Koosman
Career
Per 600 PA
0
0
Chris Mahoney
Career
Per 600 PA
0
0
Jerry Koosman
Careerverified
Per 600 PAverified
1
0.57
Chris Mahoney
Career
Per 600 PA
0
0
Jerry Koosman
Careerverified
Per 600 PAverified
100
100
Chris Mahoney
Career
Per 600 PA