David Aardsma vs. Billy Koch — Career Comparison

David Aardsma
MillenialColoradoThrows RightBats RightNorth AmericaSeattle MarinersAmerican LeagueRelief Pitcher
Billy Koch
Gen XNew YorkThrows RightBats RightNorth AmericaToronto Blue JaysAmerican LeagueRelief Pitcher

David Aardsma and Billy Koch are about as close as two relievers get — the gap between them is negligible across the key measures. Their run-prevention numbers were nearly identical — ERA+ of 109 for David Aardsma and 106 for Billy Koch, with skill-based marks of DICE+ 99 and 102 respectively. If forced to pick, Billy Koch gets the slight nod, but this is a genuinely even pairing.

Pitching Stats for David Aardsma and Billy Koch

David Aardsma
Careerverified
Per 9 Inningsverified
9
9
Billy Koch
Career
Per 9 Innings
6
6
David Aardsma
Career
Per 9 Inningsverified
331
8.84
Billy Koch
Careerverified
Per 9 Innings
379
8.37
David Aardsma
Career
Per 9 Innings
0
0
Billy Koch
Career
Per 9 Innings
0
0
David Aardsma
Career
Per 9 Innings
16
0.43
Billy Koch
Careerverified
Per 9 Inningsverified
29
0.64
David Aardsma
Careerverified
Per 9 Inningsverified
18
0.48
Billy Koch
Career
Per 9 Innings
25
0.55
David Aardsma
Career
Per 9 Innings
47.06
47.06
Billy Koch
Careerverified
Per 9 Inningsverified
53.7
53.7
David Aardsma
Career
Per 9 Innings
0
0
Billy Koch
Career
Per 9 Innings
0
0
David Aardsma
Career
Per 9 Innings
0
0
Billy Koch
Career
Per 9 Innings
0
0
David Aardsma
Career
Per 9 Innings
0
0
Billy Koch
Career
Per 9 Innings
0
0
David Aardsma
Career
Per 9 Innings
69
1.84
Billy Koch
Careerverified
Per 9 Inningsverified
163
3.6
David Aardsma
Careerverified
Per 9 Innings
160
4.27
Billy Koch
Career
Per 9 Inningsverified
176
3.89
David Aardsma
Career
Per 9 Innings
4.27
4.27
Billy Koch
Careerverified
Per 9 Inningsverified
3.89
3.89
David Aardsma
Career
Per 9 Innings
4.19
4.19
Billy Koch
Careerverified
Per 9 Inningsverified
4.01
4.01
David Aardsma
Career
Per 9 Innings
4.34
4.34
Billy Koch
Careerverified
Per 9 Inningsverified
4.09
4.09
David Aardsma
Careerverified
Per 9 Inningsverified
0.237
0.237
Billy Koch
Career
Per 9 Innings
0.247
0.247
David Aardsma
Career
Per 9 Innings
1011
27
Billy Koch
Careerverified
Per 9 Innings
1222
27
David Aardsma
Career
Per 9 Innings
337
9
Billy Koch
Careerverified
Per 9 Innings
407.1
9
David Aardsma
Careerverified
Per 9 Inningsverified
296
7.91
Billy Koch
Career
Per 9 Innings
379
8.37
David Aardsma
Careerverified
Per 9 Inningsverified
7.91
7.91
Billy Koch
Career
Per 9 Innings
8.37
8.37
David Aardsma
Career
Per 9 Innings
41
1.09
Billy Koch
Career
Per 9 Inningsverified
41
0.91
David Aardsma
Career
Per 9 Innings
1.1
1.1
Billy Koch
Careerverified
Per 9 Inningsverified
0.91
0.91
David Aardsma
Career
Per 9 Innings
0.12
0.12
Billy Koch
Careerverified
Per 9 Inningsverified
0.11
0.11
David Aardsma
Careerverified
Per 9 Innings
183
4.89
Billy Koch
Career
Per 9 Inningsverified
191
4.22
David Aardsma
Careerverified
Per 9 Inningsverified
22
0.59
Billy Koch
Career
Per 9 Innings
27
0.6
David Aardsma
Career
Per 9 Innings
4.89
4.89
Billy Koch
Careerverified
Per 9 Inningsverified
4.22
4.22
David Aardsma
Career
Per 9 Inningsverified
340
9.08
Billy Koch
Careerverified
Per 9 Innings
357
7.89
David Aardsma
Careerverified
Per 9 Inningsverified
9.08
9.08
Billy Koch
Career
Per 9 Innings
7.89
7.89
David Aardsma
Careerverified
Per 9 Inningsverified
1.03
1.03
Billy Koch
Career
Per 9 Innings
0.94
0.94
David Aardsma
Careerverified
Per 9 Inningsverified
1.552
1.552
Billy Koch
Career
Per 9 Innings
1.345
1.345
David Aardsma
Careerverified
Per 9 Inningsverified
12
0.32
Billy Koch
Career
Per 9 Innings
19
0.42
David Aardsma
Careerverified
Per 9 Innings
16
0.43
Billy Koch
Career
Per 9 Inningsverified
18
0.4
David Aardsma
Career
Per 9 Innings
1
0.03
Billy Koch
Careerverified
Per 9 Inningsverified
0
0
David Aardsma
Career
Per 9 Inningsverified
1475
39.39
Billy Koch
Careerverified
Per 9 Innings
1777
39.26
David Aardsma
Career
Per 9 Innings
141
3.77
Billy Koch
Careerverified
Per 9 Inningsverified
325
7.18
David Aardsma
Careerverified
Per 9 Innings
169
4.51
Billy Koch
Career
Per 9 Inningsverified
192
4.24
David Aardsma
Career
Per 9 Innings
4.51
4.51
Billy Koch
Careerverified
Per 9 Inningsverified
4.24
4.24
David Aardsma
Careerverified
Per 9 Inningsverified
17
0.45
Billy Koch
Career
Per 9 Innings
22
0.49
David Aardsma
Careerverified
Per 9 Innings
11
0.29
Billy Koch
Career
Per 9 Inningsverified
12
0.27
David Aardsma
Career
Per 9 Innings
21
0.56
Billy Koch
Careerverified
Per 9 Inningsverified
34
0.75
David Aardsma
Career
Per 9 Innings
1.421
1.421
Billy Koch
Careerverified
Per 9 Inningsverified
1.399
1.399
David Aardsma
Career
Per 9 Innings
1248
33.33
Billy Koch
Careerverified
Per 9 Inningsverified
1534
33.89
David Aardsma
Career
Per 9 Innings
0.51
0.51
Billy Koch
Career
Per 9 Innings
0.51
0.51
David Aardsma
Careerverified
Per 9 Inningsverified
0.294
0.294
Billy Koch
Career
Per 9 Innings
0.298
0.298
David Aardsma
Careerverified
Per 9 Inningsverified
39.39
39.39
Billy Koch
Career
Per 9 Innings
39.26
39.26

Fielding Stats for David Aardsma and Billy Koch

David Aardsma
Careerverified
Per 9 Inningsverified
9
9
Billy Koch
Career
Per 9 Innings
6
6
David Aardsma
Career
Per 9 Inningsverified
331
8.84
Billy Koch
Careerverified
Per 9 Innings
379
8.37
David Aardsma
Career
Per 9 Innings
0
0
Billy Koch
Career
Per 9 Innings
0
0
David Aardsma
Career
Per 9 Innings
1011
27
Billy Koch
Careerverified
Per 9 Innings
1222
27
David Aardsma
Career
Per 9 Innings
337
9
Billy Koch
Careerverified
Per 9 Innings
407.1
9
David Aardsma
Career
Per 9 Innings
11
0.29
Billy Koch
Careerverified
Per 9 Inningsverified
35
0.77
David Aardsma
Career
Per 9 Innings
29
0.77
Billy Koch
Careerverified
Per 9 Inningsverified
43
0.95
David Aardsma
Career
Per 9 Innings
3
0.08
Billy Koch
Careerverified
Per 9 Inningsverified
2
0.04
David Aardsma
Career
Per 9 Innings
43
1.15
Billy Koch
Careerverified
Per 9 Inningsverified
80
1.77
David Aardsma
Career
Per 9 Innings
40
1.07
Billy Koch
Careerverified
Per 9 Inningsverified
78
1.72
David Aardsma
Career
Per 9 Innings
93.02
93.02
Billy Koch
Careerverified
Per 9 Inningsverified
97.5
97.5
David Aardsma
Career
Per 9 Innings
0.121
0.121
Billy Koch
Careerverified
Per 9 Inningsverified
0.206
0.206
David Aardsma
Career
Per 9 Innings
0
0
Billy Koch
Career
Per 9 Innings
0
0
David Aardsma
Career
Per 9 Innings
2
0.05
Billy Koch
Careerverified
Per 9 Inningsverified
7
0.15
David Aardsma
Career
Per 9 Innings
0
0
Billy Koch
Career
Per 9 Innings
0
0
David Aardsma
Career
Per 9 Innings
0
0
Billy Koch
Career
Per 9 Innings
0
0
David Aardsma
Career
Per 9 Innings
0
0
Billy Koch
Career
Per 9 Innings
0
0
David Aardsma
Career
Per 9 Innings
0
0
Billy Koch
Career
Per 9 Innings
0
0

Hitting Stats for David Aardsma and Billy Koch

David Aardsma
Careerverified
Per 600 PAverified
9
9
Billy Koch
Career
Per 600 PA
6
6
David Aardsma
Career
Per 600 PA
331
39720
Billy Koch
Careerverified
Per 600 PAverified
379
113700
David Aardsma
Careerverified
Per 600 PA
5
600
Billy Koch
Career
Per 600 PA
2
600
David Aardsma
Careerverified
Per 600 PA
4
480
Billy Koch
Career
Per 600 PAverified
2
600
David Aardsma
Career
Per 600 PA
0
0
Billy Koch
Career
Per 600 PA
0
0
David Aardsma
Careerverified
Per 600 PAverified
0.2
0.2
Billy Koch
Career
Per 600 PA
0
0
David Aardsma
Career
Per 600 PA
0
0
Billy Koch
Career
Per 600 PA
0
0
David Aardsma
Career
Per 600 PA
0
0
Billy Koch
Career
Per 600 PA
0
0
David Aardsma
Career
Per 600 PA
0
0
Billy Koch
Career
Per 600 PA
0
0
David Aardsma
Career
Per 600 PA
0
0
Billy Koch
Career
Per 600 PA
0
0
David Aardsma
Career
Per 600 PA
0
0
Billy Koch
Career
Per 600 PA
0
0
David Aardsma
Career
Per 600 PA
0
0
Billy Koch
Career
Per 600 PA
0
0
David Aardsma
Career
Per 600 PA
Billy Koch
Career
Per 600 PA
David Aardsma
Career
Per 600 PA
0
0
Billy Koch
Career
Per 600 PA
0
0
David Aardsma
Career
Per 600 PA
Billy Koch
Career
Per 600 PA
David Aardsma
Career
Per 600 PA
0
0
Billy Koch
Career
Per 600 PA
0
0
David Aardsma
Career
Per 600 PA
0
0
Billy Koch
Career
Per 600 PA
0
0
David Aardsma
Career
Per 600 PA
0
0
Billy Koch
Career
Per 600 PA
0
0
David Aardsma
Career
Per 600 PA
0
0
Billy Koch
Career
Per 600 PA
0
0
David Aardsma
Career
Per 600 PA
0
0
Billy Koch
Career
Per 600 PA
0
0
David Aardsma
Career
Per 600 PA
0
0
Billy Koch
Career
Per 600 PA
0
0
David Aardsma
Career
Per 600 PA
0
0
Billy Koch
Career
Per 600 PA
0
0
David Aardsma
Career
Per 600 PA
0
0
Billy Koch
Career
Per 600 PA
0
0
David Aardsma
Career
Per 600 PA
0
0
Billy Koch
Career
Per 600 PA
0
0
David Aardsma
Career
Per 600 PA
0
0
Billy Koch
Career
Per 600 PA
David Aardsma
Career
Per 600 PA
0
0
Billy Koch
Career
Per 600 PA
0
0
David Aardsma
Career
Per 600 PA
0
0
Billy Koch
Career
Per 600 PA
0
0
David Aardsma
Career
Per 600 PA
0
0
Billy Koch
Career
Per 600 PA
0
0
David Aardsma
Career
Per 600 PAverified
-0.39
-46.82
Billy Koch
Careerverified
Per 600 PA
-0.22
-66.4
David Aardsma
Career
Per 600 PA
0
0
Billy Koch
Career
Per 600 PA
0
0
David Aardsma
Career
Per 600 PA
0
0
Billy Koch
Career
Per 600 PA
0
0
David Aardsma
Career
Per 600 PA
0
0
Billy Koch
Career
Per 600 PA
0
0
David Aardsma
Career
Per 600 PAverified
2
240
Billy Koch
Career
Per 600 PA
2
600
David Aardsma
Careerverified
Per 600 PAverified
2.5
2.5
Billy Koch
Career
Per 600 PA
1
1
David Aardsma
Career
Per 600 PA
0
0
Billy Koch
Career
Per 600 PA
0
0
David Aardsma
Careerverified
Per 600 PAverified
1
120
Billy Koch
Career
Per 600 PA
0
0
David Aardsma
Career
Per 600 PA
0
0
Billy Koch
Career
Per 600 PA
0
0
David Aardsma
Career
Per 600 PA
0
0
Billy Koch
Career
Per 600 PA
0
0
David Aardsma
Career
Per 600 PA
0
0
Billy Koch
Career
Per 600 PA
0
0
David Aardsma
Career
Per 600 PA
0
0
Billy Koch
Career
Per 600 PA
0
0
David Aardsma
Career
Per 600 PA
0
0
Billy Koch
Career
Per 600 PA
0
0
David Aardsma
Career
Per 600 PA
Billy Koch
Career
Per 600 PA