David Aardsma vs. Willis Roberts — Career Comparison

David Aardsma
MillenialColoradoThrows RightBats RightNorth AmericaSeattle MarinersAmerican LeagueRelief Pitcher
Willis Roberts
Gen XD.R.Throws RightBats RightCaribbeanBaltimore OriolesAmerican LeagueRelief Pitcher

The numbers give David Aardsma a clear advantage over Willis Roberts across the core pitching metrics. David Aardsma led in strikeout rate (K%+ 120 vs 87), run prevention (ERA+ 109 vs 97), and skill-based run prevention (DICE+ 99 vs 94). Willis Roberts held the edge in walk avoidance (BB%+ 100 vs 76). David Aardsma was the better reliever — the numbers make that case clearly.

Pitching Stats for David Aardsma and Willis Roberts

David Aardsma
Careerverified
Per 9 Inningsverified
9
9
Willis Roberts
Career
Per 9 Innings
5
5
David Aardsma
Careerverified
Per 9 Inningsverified
331
8.84
Willis Roberts
Career
Per 9 Innings
148
5.13
David Aardsma
Career
Per 9 Innings
0
0
Willis Roberts
Careerverified
Per 9 Inningsverified
18
0.62
David Aardsma
Career
Per 9 Innings
16
0.43
Willis Roberts
Careerverified
Per 9 Inningsverified
17
0.59
David Aardsma
Career
Per 9 Inningsverified
18
0.48
Willis Roberts
Careerverified
Per 9 Innings
15
0.52
David Aardsma
Career
Per 9 Innings
47.06
47.06
Willis Roberts
Careerverified
Per 9 Inningsverified
53.13
53.13
David Aardsma
Career
Per 9 Innings
0
0
Willis Roberts
Careerverified
Per 9 Inningsverified
12.16
12.16
David Aardsma
Career
Per 9 Innings
0
0
Willis Roberts
Careerverified
Per 9 Inningsverified
1
0.03
David Aardsma
Career
Per 9 Innings
0
0
Willis Roberts
Career
Per 9 Innings
0
0
David Aardsma
Careerverified
Per 9 Inningsverified
69
1.84
Willis Roberts
Career
Per 9 Innings
7
0.24
David Aardsma
Career
Per 9 Inningsverified
160
4.27
Willis Roberts
Careerverified
Per 9 Innings
134
4.64
David Aardsma
Careerverified
Per 9 Inningsverified
4.27
4.27
Willis Roberts
Career
Per 9 Innings
4.64
4.64
David Aardsma
Careerverified
Per 9 Inningsverified
4.19
4.19
Willis Roberts
Career
Per 9 Innings
4.97
4.97
David Aardsma
Careerverified
Per 9 Inningsverified
4.34
4.34
Willis Roberts
Career
Per 9 Innings
4.56
4.56
David Aardsma
Careerverified
Per 9 Inningsverified
0.237
0.237
Willis Roberts
Career
Per 9 Innings
0.274
0.274
David Aardsma
Careerverified
Per 9 Innings
1011
27
Willis Roberts
Career
Per 9 Innings
779
27
David Aardsma
Careerverified
Per 9 Innings
337
9
Willis Roberts
Career
Per 9 Innings
259.2
9
David Aardsma
Career
Per 9 Inningsverified
296
7.91
Willis Roberts
Careerverified
Per 9 Innings
277
9.6
David Aardsma
Careerverified
Per 9 Inningsverified
7.91
7.91
Willis Roberts
Career
Per 9 Innings
9.6
9.6
David Aardsma
Career
Per 9 Innings
41
1.09
Willis Roberts
Careerverified
Per 9 Inningsverified
27
0.94
David Aardsma
Career
Per 9 Innings
1.1
1.1
Willis Roberts
Careerverified
Per 9 Inningsverified
0.94
0.94
David Aardsma
Careerverified
Per 9 Inningsverified
0.12
0.12
Willis Roberts
Career
Per 9 Innings
0.18
0.18
David Aardsma
Career
Per 9 Innings
183
4.89
Willis Roberts
Careerverified
Per 9 Inningsverified
112
3.88
David Aardsma
Career
Per 9 Innings
22
0.59
Willis Roberts
Careerverified
Per 9 Inningsverified
6
0.21
David Aardsma
Career
Per 9 Innings
4.89
4.89
Willis Roberts
Careerverified
Per 9 Inningsverified
3.88
3.88
David Aardsma
Careerverified
Per 9 Inningsverified
340
9.08
Willis Roberts
Career
Per 9 Innings
179
6.2
David Aardsma
Careerverified
Per 9 Inningsverified
9.08
9.08
Willis Roberts
Career
Per 9 Innings
6.2
6.2
David Aardsma
Career
Per 9 Innings
1.03
1.03
Willis Roberts
Careerverified
Per 9 Inningsverified
1.21
1.21
David Aardsma
Careerverified
Per 9 Inningsverified
1.552
1.552
Willis Roberts
Career
Per 9 Innings
1.121
1.121
David Aardsma
Careerverified
Per 9 Inningsverified
12
0.32
Willis Roberts
Career
Per 9 Innings
13
0.45
David Aardsma
Careerverified
Per 9 Inningsverified
16
0.43
Willis Roberts
Career
Per 9 Innings
25
0.87
David Aardsma
Careerverified
Per 9 Inningsverified
1
0.03
Willis Roberts
Career
Per 9 Innings
2
0.07
David Aardsma
Careerverified
Per 9 Innings
1475
39.39
Willis Roberts
Career
Per 9 Inningsverified
1165
40.38
David Aardsma
Careerverified
Per 9 Inningsverified
141
3.77
Willis Roberts
Career
Per 9 Innings
54
1.87
David Aardsma
Career
Per 9 Inningsverified
169
4.51
Willis Roberts
Careerverified
Per 9 Innings
146
5.06
David Aardsma
Careerverified
Per 9 Inningsverified
4.51
4.51
Willis Roberts
Career
Per 9 Innings
5.06
5.06
David Aardsma
Career
Per 9 Innings
17
0.45
Willis Roberts
Careerverified
Per 9 Inningsverified
7
0.24
David Aardsma
Career
Per 9 Inningsverified
11
0.29
Willis Roberts
Career
Per 9 Innings
11
0.38
David Aardsma
Career
Per 9 Innings
21
0.56
Willis Roberts
Career
Per 9 Inningsverified
21
0.73
David Aardsma
Careerverified
Per 9 Inningsverified
1.421
1.421
Willis Roberts
Career
Per 9 Innings
1.498
1.498
David Aardsma
Careerverified
Per 9 Innings
1248
33.33
Willis Roberts
Career
Per 9 Inningsverified
1010
35.01
David Aardsma
Careerverified
Per 9 Inningsverified
0.51
0.51
Willis Roberts
Career
Per 9 Innings
0.99
0.99
David Aardsma
Careerverified
Per 9 Inningsverified
0.294
0.294
Willis Roberts
Career
Per 9 Innings
0.311
0.311
David Aardsma
Career
Per 9 Innings
39.39
39.39
Willis Roberts
Careerverified
Per 9 Inningsverified
40.38
40.38

Fielding Stats for David Aardsma and Willis Roberts

David Aardsma
Careerverified
Per 9 Inningsverified
9
9
Willis Roberts
Career
Per 9 Innings
5
5
David Aardsma
Careerverified
Per 9 Inningsverified
331
8.84
Willis Roberts
Career
Per 9 Innings
148
5.13
David Aardsma
Career
Per 9 Innings
0
0
Willis Roberts
Careerverified
Per 9 Inningsverified
18
0.62
David Aardsma
Careerverified
Per 9 Innings
1011
27
Willis Roberts
Career
Per 9 Innings
779
27
David Aardsma
Careerverified
Per 9 Innings
337
9
Willis Roberts
Career
Per 9 Innings
259.2
9
David Aardsma
Career
Per 9 Innings
11
0.29
Willis Roberts
Careerverified
Per 9 Inningsverified
15
0.52
David Aardsma
Career
Per 9 Innings
29
0.77
Willis Roberts
Careerverified
Per 9 Inningsverified
39
1.35
David Aardsma
Careerverified
Per 9 Inningsverified
3
0.08
Willis Roberts
Career
Per 9 Innings
5
0.17
David Aardsma
Career
Per 9 Innings
43
1.15
Willis Roberts
Careerverified
Per 9 Inningsverified
59
2.04
David Aardsma
Career
Per 9 Innings
40
1.07
Willis Roberts
Careerverified
Per 9 Inningsverified
54
1.87
David Aardsma
Careerverified
Per 9 Inningsverified
93.02
93.02
Willis Roberts
Career
Per 9 Innings
91.53
91.53
David Aardsma
Career
Per 9 Innings
0.121
0.121
Willis Roberts
Careerverified
Per 9 Inningsverified
0.365
0.365
David Aardsma
Career
Per 9 Innings
0
0
Willis Roberts
Careerverified
Per 9 Inningsverified
12.16
12.16
David Aardsma
Careerverified
Per 9 Inningsverified
2
0.05
Willis Roberts
Career
Per 9 Innings
1
0.03
David Aardsma
Career
Per 9 Innings
0
0
Willis Roberts
Career
Per 9 Innings
0
0
David Aardsma
Career
Per 9 Innings
0
0
Willis Roberts
Career
Per 9 Innings
0
0
David Aardsma
Career
Per 9 Innings
0
0
Willis Roberts
Career
Per 9 Innings
0
0
David Aardsma
Career
Per 9 Innings
0
0
Willis Roberts
Career
Per 9 Innings
0
0

Hitting Stats for David Aardsma and Willis Roberts

David Aardsma
Careerverified
Per 600 PAverified
9
9
Willis Roberts
Career
Per 600 PA
5
5
David Aardsma
Careerverified
Per 600 PAverified
331
39720
Willis Roberts
Career
Per 600 PA
148
14800
David Aardsma
Career
Per 600 PA
5
600
Willis Roberts
Careerverified
Per 600 PA
6
600
David Aardsma
Career
Per 600 PA
4
480
Willis Roberts
Careerverified
Per 600 PAverified
5
500
David Aardsma
Career
Per 600 PA
0
0
Willis Roberts
Careerverified
Per 600 PAverified
0.2
0.2
David Aardsma
Career
Per 600 PA
0.2
0.2
Willis Roberts
Careerverified
Per 600 PAverified
0.5
0.5
David Aardsma
Career
Per 600 PA
0
0
Willis Roberts
Careerverified
Per 600 PAverified
1
100
David Aardsma
Career
Per 600 PA
0
0
Willis Roberts
Careerverified
Per 600 PAverified
1
100
David Aardsma
Career
Per 600 PA
0
0
Willis Roberts
Career
Per 600 PA
0
0
David Aardsma
Career
Per 600 PA
0
0
Willis Roberts
Career
Per 600 PA
0
0
David Aardsma
Career
Per 600 PA
0
0
Willis Roberts
Career
Per 600 PA
0
0
David Aardsma
Career
Per 600 PA
0
0
Willis Roberts
Career
Per 600 PA
0
0
David Aardsma
Career
Per 600 PA
Willis Roberts
Career
Per 600 PA
0
0
David Aardsma
Career
Per 600 PA
0
0
Willis Roberts
Career
Per 600 PA
0
0
David Aardsma
Career
Per 600 PA
Willis Roberts
Career
Per 600 PA
0
0
David Aardsma
Career
Per 600 PA
0
0
Willis Roberts
Careerverified
Per 600 PAverified
0.18
18.03
David Aardsma
Career
Per 600 PA
0
0
Willis Roberts
Careerverified
Per 600 PAverified
1
100
David Aardsma
Career
Per 600 PA
0
0
Willis Roberts
Careerverified
Per 600 PAverified
1
100
David Aardsma
Career
Per 600 PA
0
0
Willis Roberts
Careerverified
Per 600 PAverified
0.2
0.2
David Aardsma
Career
Per 600 PA
0
0
Willis Roberts
Careerverified
Per 600 PAverified
0.2
0.2
David Aardsma
Career
Per 600 PA
0
0
Willis Roberts
Careerverified
Per 600 PAverified
0.4
0.4
David Aardsma
Career
Per 600 PA
0
0
Willis Roberts
Career
Per 600 PA
0
0
David Aardsma
Career
Per 600 PA
0
0
Willis Roberts
Careerverified
Per 600 PAverified
0.14
0.14
David Aardsma
Career
Per 600 PA
0
0
Willis Roberts
Careerverified
Per 600 PAverified
0.25
0.25
David Aardsma
Career
Per 600 PA
0
0
Willis Roberts
Careerverified
Per 600 PAverified
1
1
David Aardsma
Career
Per 600 PA
0
0
Willis Roberts
Career
Per 600 PA
0
0
David Aardsma
Career
Per 600 PA
0
0
Willis Roberts
Career
Per 600 PA
0
0
David Aardsma
Career
Per 600 PA
0
0
Willis Roberts
Career
Per 600 PA
0
0
David Aardsma
Career
Per 600 PA
-0.39
-46.82
Willis Roberts
Careerverified
Per 600 PAverified
0.18
18.45
David Aardsma
Career
Per 600 PA
0
0
Willis Roberts
Career
Per 600 PA
0
0
David Aardsma
Career
Per 600 PA
0
0
Willis Roberts
Career
Per 600 PA
0
0
David Aardsma
Career
Per 600 PA
0
0
Willis Roberts
Career
Per 600 PA
0
0
David Aardsma
Careerverified
Per 600 PAverified
2
240
Willis Roberts
Career
Per 600 PA
4
400
David Aardsma
Careerverified
Per 600 PAverified
2.5
2.5
Willis Roberts
Career
Per 600 PA
1.5
1.5
David Aardsma
Career
Per 600 PA
0
0
Willis Roberts
Career
Per 600 PA
0
0
David Aardsma
Career
Per 600 PAverified
1
120
Willis Roberts
Career
Per 600 PA
1
100
David Aardsma
Career
Per 600 PA
0
0
Willis Roberts
Career
Per 600 PA
0
0
David Aardsma
Career
Per 600 PA
0
0
Willis Roberts
Career
Per 600 PA
0
0
David Aardsma
Career
Per 600 PA
0
0
Willis Roberts
Career
Per 600 PA
0
0
David Aardsma
Career
Per 600 PA
0
0
Willis Roberts
Career
Per 600 PA
0
0
David Aardsma
Career
Per 600 PA
0
0
Willis Roberts
Career
Per 600 PA
0
0
David Aardsma
Career
Per 600 PA
Willis Roberts
Career
Per 600 PA