Dan O'Brien vs. Mike Walker — Career Comparison

Dan O'Brien
Baby BoomersFloridaThrows RightBats RightNorth AmericaSt. Louis CardinalsNational LeagueRelief Pitcher
Mike Walker
Gen XTexasThrows RightBats RightNorth AmericaSeattle MarinersAmerican LeagueStarting Pitcher

Mike Walker built a career as a starting pitcher and Dan O'Brien as a reliever — different jobs with different demands — but on the metrics that apply to both, a comparison is still worth making. Dan O'Brien posted stronger surface numbers — ERA 5.9 and WHIP 1.931 compared to 7.36 and 2.250 for Mike Walker. By the career numbers, Dan O'Brien had the better of this cross-role comparison — though era context would sharpen the verdict.

Pitching Stats for Dan O'Brien and Mike Walker

Dan O'Brien
Careerverified
Per 9 Inningsverified
2
2
Mike Walker
Career
Per 9 Innings
1
1
Dan O'Brien
Careerverified
Per 9 Inningsverified
13
4.03
Mike Walker
Career
Per 9 Innings
5
3.07
Dan O'Brien
Career
Per 9 Innings
2
0.62
Mike Walker
Careerverified
Per 9 Inningsverified
3
1.84
Dan O'Brien
Careerverified
Per 9 Inningsverified
1
0.31
Mike Walker
Career
Per 9 Innings
0
0
Dan O'Brien
Career
Per 9 Inningsverified
3
0.93
Mike Walker
Career
Per 9 Innings
3
1.84
Dan O'Brien
Careerverified
Per 9 Inningsverified
25
25
Mike Walker
Career
Per 9 Innings
0
0
Dan O'Brien
Career
Per 9 Innings
15.38
15.38
Mike Walker
Careerverified
Per 9 Inningsverified
60
60
Dan O'Brien
Career
Per 9 Innings
0
0
Mike Walker
Career
Per 9 Innings
0
0
Dan O'Brien
Career
Per 9 Innings
0
0
Mike Walker
Career
Per 9 Innings
0
0
Dan O'Brien
Career
Per 9 Innings
0
0
Mike Walker
Career
Per 9 Innings
0
0
Dan O'Brien
Career
Per 9 Inningsverified
19
5.9
Mike Walker
Careerverified
Per 9 Innings
12
7.36
Dan O'Brien
Careerverified
Per 9 Inningsverified
5.9
5.9
Mike Walker
Career
Per 9 Innings
7.36
7.36
Dan O'Brien
Careerverified
Per 9 Inningsverified
6.42
6.42
Mike Walker
Career
Per 9 Innings
8.54
8.54
Dan O'Brien
Careerverified
Per 9 Inningsverified
3.62
3.62
Mike Walker
Career
Per 9 Innings
7.7
7.7
Dan O'Brien
Career
Per 9 Innings
0.35
0.35
Mike Walker
Careerverified
Per 9 Inningsverified
0.333
0.333
Dan O'Brien
Careerverified
Per 9 Innings
87
27
Mike Walker
Career
Per 9 Innings
44
27
Dan O'Brien
Careerverified
Per 9 Innings
29
9
Mike Walker
Career
Per 9 Innings
14.2
9
Dan O'Brien
Career
Per 9 Innings
43
13.34
Mike Walker
Careerverified
Per 9 Inningsverified
21
12.89
Dan O'Brien
Career
Per 9 Innings
13.34
13.34
Mike Walker
Careerverified
Per 9 Inningsverified
12.89
12.89
Dan O'Brien
Careerverified
Per 9 Inningsverified
1
0.31
Mike Walker
Career
Per 9 Innings
4
2.45
Dan O'Brien
Careerverified
Per 9 Inningsverified
0.31
0.31
Mike Walker
Career
Per 9 Innings
2.45
2.45
Dan O'Brien
Careerverified
Per 9 Inningsverified
0.08
0.08
Mike Walker
Career
Per 9 Innings
0.8
0.8
Dan O'Brien
Career
Per 9 Inningsverified
11
3.41
Mike Walker
Careerverified
Per 9 Innings
9
5.52
Dan O'Brien
Careerverified
Per 9 Inningsverified
2
0.62
Mike Walker
Career
Per 9 Innings
3
1.84
Dan O'Brien
Careerverified
Per 9 Inningsverified
3.41
3.41
Mike Walker
Career
Per 9 Innings
5.52
5.52
Dan O'Brien
Careerverified
Per 9 Inningsverified
17
5.28
Mike Walker
Career
Per 9 Innings
5
3.07
Dan O'Brien
Careerverified
Per 9 Inningsverified
5.28
5.28
Mike Walker
Career
Per 9 Innings
3.07
3.07
Dan O'Brien
Careerverified
Per 9 Inningsverified
1.31
1.31
Mike Walker
Career
Per 9 Innings
1
1
Dan O'Brien
Careerverified
Per 9 Inningsverified
0.966
0.966
Mike Walker
Career
Per 9 Innings
0.955
0.955
Dan O'Brien
Careerverified
Per 9 Inningsverified
0
0
Mike Walker
Career
Per 9 Innings
1
0.61
Dan O'Brien
Career
Per 9 Innings
2
0.62
Mike Walker
Careerverified
Per 9 Inningsverified
0
0
Dan O'Brien
Career
Per 9 Innings
1
0.31
Mike Walker
Careerverified
Per 9 Inningsverified
0
0
Dan O'Brien
Careerverified
Per 9 Innings
141
43.76
Mike Walker
Career
Per 9 Inningsverified
74
45.41
Dan O'Brien
Careerverified
Per 9 Inningsverified
5
1.55
Mike Walker
Career
Per 9 Innings
1
0.61
Dan O'Brien
Career
Per 9 Inningsverified
22
6.83
Mike Walker
Careerverified
Per 9 Innings
14
8.59
Dan O'Brien
Careerverified
Per 9 Inningsverified
6.83
6.83
Mike Walker
Career
Per 9 Innings
8.59
8.59
Dan O'Brien
Career
Per 9 Innings
2
0.62
Mike Walker
Careerverified
Per 9 Inningsverified
1
0.61
Dan O'Brien
Career
Per 9 Innings
3
0.93
Mike Walker
Careerverified
Per 9 Inningsverified
1
0.61
Dan O'Brien
Career
Per 9 Innings
0
0
Mike Walker
Careerverified
Per 9 Inningsverified
1
0.61
Dan O'Brien
Careerverified
Per 9 Inningsverified
1.862
1.862
Mike Walker
Career
Per 9 Innings
2.046
2.046
Dan O'Brien
Careerverified
Per 9 Innings
123
38.17
Mike Walker
Career
Per 9 Inningsverified
63
38.66
Dan O'Brien
Careerverified
Per 9 Inningsverified
1.69
1.69
Mike Walker
Career
Per 9 Innings
2.8
2.8
Dan O'Brien
Career
Per 9 Innings
0.4
0.4
Mike Walker
Careerverified
Per 9 Inningsverified
0.315
0.315
Dan O'Brien
Career
Per 9 Innings
43.76
43.76
Mike Walker
Careerverified
Per 9 Inningsverified
45.41
45.41

Fielding Stats for Dan O'Brien and Mike Walker

Dan O'Brien
Careerverified
Per 9 Inningsverified
2
2
Mike Walker
Career
Per 9 Innings
1
1
Dan O'Brien
Careerverified
Per 9 Inningsverified
13
4.03
Mike Walker
Career
Per 9 Innings
5
3.07
Dan O'Brien
Career
Per 9 Innings
2
0.62
Mike Walker
Careerverified
Per 9 Inningsverified
3
1.84
Dan O'Brien
Careerverified
Per 9 Innings
87
27
Mike Walker
Career
Per 9 Innings
44
27
Dan O'Brien
Careerverified
Per 9 Innings
29
9
Mike Walker
Career
Per 9 Innings
14.2
9
Dan O'Brien
Career
Per 9 Innings
0
0
Mike Walker
Careerverified
Per 9 Inningsverified
1
0.61
Dan O'Brien
Career
Per 9 Innings
2
0.62
Mike Walker
Careerverified
Per 9 Inningsverified
3
1.84
Dan O'Brien
Careerverified
Per 9 Inningsverified
0
0
Mike Walker
Career
Per 9 Innings
2
1.23
Dan O'Brien
Career
Per 9 Innings
2
0.62
Mike Walker
Careerverified
Per 9 Inningsverified
6
3.68
Dan O'Brien
Career
Per 9 Innings
2
0.62
Mike Walker
Careerverified
Per 9 Inningsverified
4
2.45
Dan O'Brien
Careerverified
Per 9 Inningsverified
100
100
Mike Walker
Career
Per 9 Innings
66.67
66.67
Dan O'Brien
Career
Per 9 Innings
0.154
0.154
Mike Walker
Careerverified
Per 9 Inningsverified
0.8
0.8
Dan O'Brien
Career
Per 9 Innings
15.38
15.38
Mike Walker
Careerverified
Per 9 Inningsverified
60
60
Dan O'Brien
Career
Per 9 Innings
0
0
Mike Walker
Career
Per 9 Innings
0
0
Dan O'Brien
Career
Per 9 Innings
0
0
Mike Walker
Career
Per 9 Innings
0
0
Dan O'Brien
Career
Per 9 Innings
0
0
Mike Walker
Career
Per 9 Innings
0
0
Dan O'Brien
Career
Per 9 Innings
0
0
Mike Walker
Career
Per 9 Innings
0
0
Dan O'Brien
Career
Per 9 Innings
0
0
Mike Walker
Career
Per 9 Innings
0
0

Hitting Stats for Dan O'Brien and Mike Walker

Dan O'Brien
Careerverified
Per 600 PAverified
2
2
Mike Walker
Career
Per 600 PA
1
Dan O'Brien
Careerverified
Per 600 PAverified
13
1300
Mike Walker
Career
Per 600 PA
5
Dan O'Brien
Careerverified
Per 600 PAverified
6
600
Mike Walker
Career
Per 600 PA
0
Dan O'Brien
Careerverified
Per 600 PAverified
5
500
Mike Walker
Career
Per 600 PA
0
Dan O'Brien
Career
Per 600 PA
0
0
Mike Walker
Career
Per 600 PA
Dan O'Brien
Careerverified
Per 600 PAverified
0.167
0.167
Mike Walker
Career
Per 600 PA
Dan O'Brien
Career
Per 600 PA
0
0
Mike Walker
Career
Per 600 PA
0
Dan O'Brien
Career
Per 600 PA
0
0
Mike Walker
Career
Per 600 PA
0
Dan O'Brien
Career
Per 600 PA
0
0
Mike Walker
Career
Per 600 PA
0
Dan O'Brien
Career
Per 600 PA
0
0
Mike Walker
Career
Per 600 PA
0
Dan O'Brien
Career
Per 600 PA
0
0
Mike Walker
Career
Per 600 PA
0
Dan O'Brien
Career
Per 600 PA
0
0
Mike Walker
Career
Per 600 PA
0
Dan O'Brien
Career
Per 600 PA
Mike Walker
Career
Per 600 PA
Dan O'Brien
Career
Per 600 PA
0
0
Mike Walker
Career
Per 600 PA
Dan O'Brien
Career
Per 600 PA
Mike Walker
Career
Per 600 PA
Dan O'Brien
Career
Per 600 PA
0
0
Mike Walker
Career
Per 600 PA
Dan O'Brien
Career
Per 600 PA
0
0
Mike Walker
Career
Per 600 PA
0
Dan O'Brien
Career
Per 600 PA
0
0
Mike Walker
Career
Per 600 PA
0
Dan O'Brien
Career
Per 600 PA
0
0
Mike Walker
Career
Per 600 PA
Dan O'Brien
Career
Per 600 PA
0
0
Mike Walker
Career
Per 600 PA
Dan O'Brien
Career
Per 600 PA
0
0
Mike Walker
Career
Per 600 PA
Dan O'Brien
Career
Per 600 PA
0
0
Mike Walker
Career
Per 600 PA
Dan O'Brien
Career
Per 600 PA
0
0
Mike Walker
Career
Per 600 PA
Dan O'Brien
Career
Per 600 PA
0
0
Mike Walker
Career
Per 600 PA
Dan O'Brien
Career
Per 600 PA
0
0
Mike Walker
Career
Per 600 PA
Dan O'Brien
Career
Per 600 PA
0
0
Mike Walker
Career
Per 600 PA
0
Dan O'Brien
Career
Per 600 PA
0
0
Mike Walker
Career
Per 600 PA
0
Dan O'Brien
Career
Per 600 PA
0
0
Mike Walker
Career
Per 600 PA
0
Dan O'Brien
Careerverified
Per 600 PAverified
-0.47
-46.88
Mike Walker
Career
Per 600 PA
Dan O'Brien
Career
Per 600 PA
0
0
Mike Walker
Career
Per 600 PA
0
Dan O'Brien
Career
Per 600 PA
0
0
Mike Walker
Career
Per 600 PA
0
Dan O'Brien
Career
Per 600 PA
0
0
Mike Walker
Career
Per 600 PA
0
Dan O'Brien
Career
Per 600 PA
0
0
Mike Walker
Career
Per 600 PA
0
Dan O'Brien
Career
Per 600 PA
Mike Walker
Career
Per 600 PA
Dan O'Brien
Career
Per 600 PA
Mike Walker
Career
Per 600 PA
Dan O'Brien
Careerverified
Per 600 PAverified
1
100
Mike Walker
Career
Per 600 PA
0
Dan O'Brien
Career
Per 600 PA
0
0
Mike Walker
Career
Per 600 PA
0
Dan O'Brien
Career
Per 600 PA
0
0
Mike Walker
Career
Per 600 PA
0
Dan O'Brien
Career
Per 600 PA
0
0
Mike Walker
Career
Per 600 PA
0
Dan O'Brien
Career
Per 600 PA
0
0
Mike Walker
Career
Per 600 PA
0
Dan O'Brien
Career
Per 600 PA
0
0
Mike Walker
Career
Per 600 PA
0
Dan O'Brien
Career
Per 600 PA
Mike Walker
Career
Per 600 PA