Sean O'Sullivan vs. Chad Zerbe — Career Comparison
Sean O'Sullivan built a career as a starting pitcher and Chad Zerbe as a reliever — different jobs with different demands — but on the metrics that apply to both, a comparison is still worth making. Chad Zerbe posted stronger surface numbers — ERA 3.87 and WHIP 1.384 compared to 6.01 and 1.616 for Sean O'Sullivan. By the career numbers, Chad Zerbe had the better of this cross-role comparison — though era context would sharpen the verdict.
Pitching Stats for Sean O'Sullivan and Chad Zerbe
Sean O'Sullivan
Career
Per 9 Innings
71
1.97
Chad Zerbe
Career
Per 9 Innings
114
6.79
Sean O'Sullivan
Career
Per 9 Innings
36.11
36.11
Chad Zerbe
Career
Per 9 Innings
85.71
85.71
Sean O'Sullivan
Career
Per 9 Innings
78.87
78.87
Chad Zerbe
Career
Per 9 Innings
1.75
1.75
Sean O'Sullivan
Career
Per 9 Innings
216
6.01
Chad Zerbe
Career
Per 9 Innings
65
3.87
Sean O'Sullivan
Career
Per 9 Innings
6.01
6.01
Chad Zerbe
Career
Per 9 Innings
3.87
3.87
Sean O'Sullivan
Career
Per 9 Innings
5.98
5.98
Chad Zerbe
Career
Per 9 Innings
3.91
3.91
Sean O'Sullivan
Career
Per 9 Innings
5.58
5.58
Chad Zerbe
Career
Per 9 Innings
3.97
3.97
Sean O'Sullivan
Career
Per 9 Innings
0.305
0.305
Chad Zerbe
Career
Per 9 Innings
0.279
0.279
Sean O'Sullivan
Career
Per 9 Innings
971
27
Chad Zerbe
Career
Per 9 Innings
453
27
Sean O'Sullivan
Career
Per 9 Innings
323.2
9
Chad Zerbe
Career
Per 9 Innings
151
9
Sean O'Sullivan
Career
Per 9 Innings
398
11.07
Chad Zerbe
Career
Per 9 Innings
159
9.48
Sean O'Sullivan
Career
Per 9 Innings
11.07
11.07
Chad Zerbe
Career
Per 9 Innings
9.48
9.48
Sean O'Sullivan
Career
Per 9 Innings
59
1.64
Chad Zerbe
Career
Per 9 Innings
10
0.6
Sean O'Sullivan
Career
Per 9 Innings
1.64
1.64
Chad Zerbe
Career
Per 9 Innings
0.6
0.6
Sean O'Sullivan
Career
Per 9 Innings
0.83
0.83
Chad Zerbe
Career
Per 9 Innings
0.09
0.09
Sean O'Sullivan
Career
Per 9 Innings
10
0.28
Chad Zerbe
Career
Per 9 Innings
4
0.24
Sean O'Sullivan
Career
Per 9 Innings
3.2
3.2
Chad Zerbe
Career
Per 9 Innings
2.74
2.74
Sean O'Sullivan
Career
Per 9 Innings
158
4.39
Chad Zerbe
Career
Per 9 Innings
70
4.17
Sean O'Sullivan
Career
Per 9 Innings
4.39
4.39
Chad Zerbe
Career
Per 9 Innings
4.17
4.17
Sean O'Sullivan
Career
Per 9 Innings
2.23
2.23
Chad Zerbe
Career
Per 9 Innings
0.61
0.61
Sean O'Sullivan
Career
Per 9 Innings
0.844
0.844
Chad Zerbe
Career
Per 9 Innings
0.768
0.768
Sean O'Sullivan
Career
Per 9 Innings
13
0.36
Chad Zerbe
Career
Per 9 Innings
4
0.24
Sean O'Sullivan
Career
Per 9 Innings
13
0.36
Chad Zerbe
Career
Per 9 Innings
6
0.36
Sean O'Sullivan
Career
Per 9 Innings
1464
40.71
Chad Zerbe
Career
Per 9 Innings
644
38.38
Sean O'Sullivan
Career
Per 9 Innings
9
0.25
Chad Zerbe
Career
Per 9 Innings
41
2.44
Sean O'Sullivan
Career
Per 9 Innings
6.28
6.28
Chad Zerbe
Career
Per 9 Innings
4.29
4.29
Sean O'Sullivan
Career
Per 9 Innings
11
0.31
Chad Zerbe
Career
Per 9 Innings
11
0.66
Sean O'Sullivan
Career
Per 9 Innings
19
0.53
Chad Zerbe
Career
Per 9 Innings
10
0.6
Sean O'Sullivan
Career
Per 9 Innings
32
0.89
Chad Zerbe
Career
Per 9 Innings
24
1.43
Sean O'Sullivan
Career
Per 9 Innings
1.585
1.585
Chad Zerbe
Career
Per 9 Innings
1.358
1.358
Sean O'Sullivan
Career
Per 9 Innings
1306
36.32
Chad Zerbe
Career
Per 9 Innings
571
34.03
Sean O'Sullivan
Career
Per 9 Innings
3.18
3.18
Chad Zerbe
Career
Per 9 Innings
0.63
0.63
Sean O'Sullivan
Career
Per 9 Innings
0.311
0.311
Chad Zerbe
Career
Per 9 Innings
0.304
0.304
Sean O'Sullivan
Career
Per 9 Innings
40.71
40.71
Chad Zerbe
Career
Per 9 Innings
38.38
38.38
Fielding Stats for Sean O'Sullivan and Chad Zerbe
Sean O'Sullivan
Career
Per 9 Innings
71
1.97
Chad Zerbe
Career
Per 9 Innings
114
6.79
Sean O'Sullivan
Career
Per 9 Innings
56
1.56
Chad Zerbe
Career
Per 9 Innings
2
0.12
Sean O'Sullivan
Career
Per 9 Innings
971
27
Chad Zerbe
Career
Per 9 Innings
453
27
Sean O'Sullivan
Career
Per 9 Innings
323.2
9
Chad Zerbe
Career
Per 9 Innings
151
9
Sean O'Sullivan
Career
Per 9 Innings
22
0.61
Chad Zerbe
Career
Per 9 Innings
9
0.54
Sean O'Sullivan
Career
Per 9 Innings
31
0.86
Chad Zerbe
Career
Per 9 Innings
28
1.67
Sean O'Sullivan
Career
Per 9 Innings
56
1.56
Chad Zerbe
Career
Per 9 Innings
38
2.26
Sean O'Sullivan
Career
Per 9 Innings
53
1.47
Chad Zerbe
Career
Per 9 Innings
37
2.21
Sean O'Sullivan
Career
Per 9 Innings
94.64
94.64
Chad Zerbe
Career
Per 9 Innings
97.37
97.37
Sean O'Sullivan
Career
Per 9 Innings
0.747
0.747
Chad Zerbe
Career
Per 9 Innings
0.325
0.325
Sean O'Sullivan
Career
Per 9 Innings
78.87
78.87
Chad Zerbe
Career
Per 9 Innings
1.75
1.75
Sean O'Sullivan
Career
Per 9 Innings
2
0.06
Chad Zerbe
Career
Per 9 Innings
3
0.18
Sean O'Sullivan
Career
Per 9 Innings
0
0
Chad Zerbe
Career
Per 9 Innings
0
0
Hitting Stats for Sean O'Sullivan and Chad Zerbe
Sean O'Sullivan
Career
Per 600 PA
71
1183.33
Chad Zerbe
Career
Per 600 PA
114
2850
Sean O'Sullivan
Career
Per 600 PA
36
600
Chad Zerbe
Career
Per 600 PA
24
600
Sean O'Sullivan
Career
Per 600 PA
0.121
0.121
Chad Zerbe
Career
Per 600 PA
0.15
0.15
Sean O'Sullivan
Career
Per 600 PA
0.375
0.375
Chad Zerbe
Career
Per 600 PA
0.417
0.417
Sean O'Sullivan
Career
Per 600 PA
0.94
15.66
Chad Zerbe
Career
Per 600 PA
0.25
6.3
Sean O'Sullivan
Career
Per 600 PA
0.147
0.147
Chad Zerbe
Career
Per 600 PA
0.15
0.15
Sean O'Sullivan
Career
Per 600 PA
0.182
0.182
Chad Zerbe
Career
Per 600 PA
0.15
0.15
Sean O'Sullivan
Career
Per 600 PA
0.112
0.112
Chad Zerbe
Career
Per 600 PA
0.105
0.105
Sean O'Sullivan
Career
Per 600 PA
0.241
0.241
Chad Zerbe
Career
Per 600 PA
0.167
0.167
Sean O'Sullivan
Career
Per 600 PA
2.12
2.12
Chad Zerbe
Career
Per 600 PA
4.8
4.8
Sean O'Sullivan
Career
Per 600 PA
0
0
Chad Zerbe
Career
Per 600 PA
1
25