Grant Jackson vs. Sean O'Sullivan — Career Comparison

Grant Jackson
Silent GenerationOhioThrows LeftBats SwitchNorth AmericaPittsburgh PiratesNational LeagueRelief PitcherAll-Star
Sean O'Sullivan
MillenialCaliforniaThrows RightBats RightNorth AmericaKansas City RoyalsAmerican LeagueStarting Pitcher

Sean O'Sullivan built a career as a starting pitcher and Grant Jackson as a reliever — different jobs with different demands — but on the metrics that apply to both, a comparison is still worth making. Grant Jackson posted stronger surface numbers — ERA 3.46 and WHIP 1.365 compared to 6.01 and 1.616 for Sean O'Sullivan. By the career numbers, Grant Jackson had the better of this cross-role comparison — though era context would sharpen the verdict.

Pitching Stats for Grant Jackson and Sean O'Sullivan

Grant Jackson
Careerverified
Per 9 Inningsverified
18
18
Sean O'Sullivan
Career
Per 9 Innings
7
7
Grant Jackson
Careerverified
Per 9 Inningsverified
692
4.58
Sean O'Sullivan
Career
Per 9 Innings
71
1.97
Grant Jackson
Careerverified
Per 9 Innings
83
0.55
Sean O'Sullivan
Career
Per 9 Inningsverified
56
1.56
Grant Jackson
Careerverified
Per 9 Inningsverified
86
0.57
Sean O'Sullivan
Career
Per 9 Innings
13
0.36
Grant Jackson
Career
Per 9 Inningsverified
75
0.5
Sean O'Sullivan
Careerverified
Per 9 Innings
23
0.64
Grant Jackson
Careerverified
Per 9 Inningsverified
53.42
53.42
Sean O'Sullivan
Career
Per 9 Innings
36.11
36.11
Grant Jackson
Career
Per 9 Innings
11.99
11.99
Sean O'Sullivan
Careerverified
Per 9 Inningsverified
78.87
78.87
Grant Jackson
Careerverified
Per 9 Inningsverified
16
0.11
Sean O'Sullivan
Career
Per 9 Innings
0
0
Grant Jackson
Careerverified
Per 9 Inningsverified
5
0.03
Sean O'Sullivan
Career
Per 9 Innings
0
0
Grant Jackson
Careerverified
Per 9 Inningsverified
79
0.52
Sean O'Sullivan
Career
Per 9 Innings
0
0
Grant Jackson
Career
Per 9 Inningsverified
523
3.46
Sean O'Sullivan
Careerverified
Per 9 Innings
216
6.01
Grant Jackson
Careerverified
Per 9 Inningsverified
3.46
3.46
Sean O'Sullivan
Career
Per 9 Innings
6.01
6.01
Grant Jackson
Careerverified
Per 9 Inningsverified
3.48
3.48
Sean O'Sullivan
Career
Per 9 Innings
5.98
5.98
Grant Jackson
Careerverified
Per 9 Inningsverified
3.91
3.91
Sean O'Sullivan
Career
Per 9 Innings
5.58
5.58
Grant Jackson
Careerverified
Per 9 Inningsverified
0.249
0.249
Sean O'Sullivan
Career
Per 9 Innings
0.305
0.305
Grant Jackson
Careerverified
Per 9 Innings
4076
27
Sean O'Sullivan
Career
Per 9 Innings
971
27
Grant Jackson
Careerverified
Per 9 Innings
1358.2
9
Sean O'Sullivan
Career
Per 9 Innings
323.2
9
Grant Jackson
Career
Per 9 Inningsverified
1272
8.43
Sean O'Sullivan
Careerverified
Per 9 Innings
398
11.07
Grant Jackson
Careerverified
Per 9 Inningsverified
8.43
8.43
Sean O'Sullivan
Career
Per 9 Innings
11.07
11.07
Grant Jackson
Career
Per 9 Inningsverified
109
0.72
Sean O'Sullivan
Careerverified
Per 9 Innings
59
1.64
Grant Jackson
Careerverified
Per 9 Inningsverified
0.72
0.72
Sean O'Sullivan
Career
Per 9 Innings
1.64
1.64
Grant Jackson
Careerverified
Per 9 Inningsverified
0.16
0.16
Sean O'Sullivan
Career
Per 9 Innings
0.83
0.83
Grant Jackson
Career
Per 9 Innings
511
3.38
Sean O'Sullivan
Careerverified
Per 9 Inningsverified
115
3.2
Grant Jackson
Career
Per 9 Innings
71
0.47
Sean O'Sullivan
Careerverified
Per 9 Inningsverified
10
0.28
Grant Jackson
Career
Per 9 Innings
3.38
3.38
Sean O'Sullivan
Careerverified
Per 9 Inningsverified
3.2
3.2
Grant Jackson
Careerverified
Per 9 Inningsverified
889
5.89
Sean O'Sullivan
Career
Per 9 Innings
158
4.39
Grant Jackson
Careerverified
Per 9 Inningsverified
5.89
5.89
Sean O'Sullivan
Career
Per 9 Innings
4.39
4.39
Grant Jackson
Career
Per 9 Innings
1.28
1.28
Sean O'Sullivan
Careerverified
Per 9 Inningsverified
2.23
2.23
Grant Jackson
Careerverified
Per 9 Inningsverified
1.03
1.03
Sean O'Sullivan
Career
Per 9 Innings
0.844
0.844
Grant Jackson
Career
Per 9 Inningsverified
44
0.29
Sean O'Sullivan
Careerverified
Per 9 Innings
13
0.36
Grant Jackson
Career
Per 9 Inningsverified
21
0.14
Sean O'Sullivan
Careerverified
Per 9 Innings
13
0.36
Grant Jackson
Career
Per 9 Innings
9
0.06
Sean O'Sullivan
Careerverified
Per 9 Innings
2
0.06
Grant Jackson
Careerverified
Per 9 Innings
5749
38.08
Sean O'Sullivan
Career
Per 9 Inningsverified
1464
40.71
Grant Jackson
Careerverified
Per 9 Inningsverified
291
1.93
Sean O'Sullivan
Career
Per 9 Innings
9
0.25
Grant Jackson
Career
Per 9 Inningsverified
589
3.9
Sean O'Sullivan
Careerverified
Per 9 Innings
226
6.28
Grant Jackson
Careerverified
Per 9 Inningsverified
3.9
3.9
Sean O'Sullivan
Career
Per 9 Innings
6.28
6.28
Grant Jackson
Career
Per 9 Innings
62
0.41
Sean O'Sullivan
Careerverified
Per 9 Inningsverified
11
0.31
Grant Jackson
Career
Per 9 Inningsverified
43
0.28
Sean O'Sullivan
Careerverified
Per 9 Innings
19
0.53
Grant Jackson
Careerverified
Per 9 Innings
52
0.34
Sean O'Sullivan
Career
Per 9 Inningsverified
32
0.89
Grant Jackson
Careerverified
Per 9 Inningsverified
1.312
1.312
Sean O'Sullivan
Career
Per 9 Innings
1.585
1.585
Grant Jackson
Careerverified
Per 9 Innings
5112
33.86
Sean O'Sullivan
Career
Per 9 Inningsverified
1306
36.32
Grant Jackson
Careerverified
Per 9 Inningsverified
0.85
0.85
Sean O'Sullivan
Career
Per 9 Innings
3.18
3.18
Grant Jackson
Careerverified
Per 9 Inningsverified
0.283
0.283
Sean O'Sullivan
Career
Per 9 Innings
0.311
0.311
Grant Jackson
Career
Per 9 Innings
38.08
38.08
Sean O'Sullivan
Careerverified
Per 9 Inningsverified
40.71
40.71

Fielding Stats for Grant Jackson and Sean O'Sullivan

Grant Jackson
Careerverified
Per 9 Inningsverified
18
18
Sean O'Sullivan
Career
Per 9 Innings
7
7
Grant Jackson
Careerverified
Per 9 Inningsverified
692
4.58
Sean O'Sullivan
Career
Per 9 Innings
71
1.97
Grant Jackson
Careerverified
Per 9 Innings
83
0.55
Sean O'Sullivan
Career
Per 9 Inningsverified
56
1.56
Grant Jackson
Careerverified
Per 9 Innings
4078
27
Sean O'Sullivan
Career
Per 9 Innings
971
27
Grant Jackson
Careerverified
Per 9 Innings
1359.1
9
Sean O'Sullivan
Career
Per 9 Innings
323.2
9
Grant Jackson
Careerverified
Per 9 Innings
55
0.36
Sean O'Sullivan
Career
Per 9 Inningsverified
22
0.61
Grant Jackson
Careerverified
Per 9 Inningsverified
170
1.13
Sean O'Sullivan
Career
Per 9 Innings
31
0.86
Grant Jackson
Career
Per 9 Innings
16
0.11
Sean O'Sullivan
Careerverified
Per 9 Inningsverified
3
0.08
Grant Jackson
Careerverified
Per 9 Inningsverified
241
1.6
Sean O'Sullivan
Career
Per 9 Innings
56
1.56
Grant Jackson
Careerverified
Per 9 Inningsverified
225
1.49
Sean O'Sullivan
Career
Per 9 Innings
53
1.47
Grant Jackson
Career
Per 9 Innings
93.36
93.36
Sean O'Sullivan
Careerverified
Per 9 Inningsverified
94.64
94.64
Grant Jackson
Career
Per 9 Innings
0.325
0.325
Sean O'Sullivan
Careerverified
Per 9 Inningsverified
0.747
0.747
Grant Jackson
Career
Per 9 Innings
11.99
11.99
Sean O'Sullivan
Careerverified
Per 9 Inningsverified
78.87
78.87
Grant Jackson
Careerverified
Per 9 Inningsverified
12
0.08
Sean O'Sullivan
Career
Per 9 Innings
2
0.06
Grant Jackson
Career
Per 9 Innings
0
0
Sean O'Sullivan
Career
Per 9 Innings
0
0
Grant Jackson
Career
Per 9 Innings
0
0
Sean O'Sullivan
Career
Per 9 Innings
0
0
Grant Jackson
Career
Per 9 Innings
0
0
Sean O'Sullivan
Career
Per 9 Innings
0
0
Grant Jackson
Career
Per 9 Innings
0
0
Sean O'Sullivan
Career
Per 9 Innings
0
0

Hitting Stats for Grant Jackson and Sean O'Sullivan

Grant Jackson
Careerverified
Per 600 PAverified
18
18
Sean O'Sullivan
Career
Per 600 PA
7
7
Grant Jackson
Careerverified
Per 600 PAverified
718
1709.52
Sean O'Sullivan
Career
Per 600 PA
71
1183.33
Grant Jackson
Careerverified
Per 600 PA
252
600
Sean O'Sullivan
Career
Per 600 PA
36
600
Grant Jackson
Careerverified
Per 600 PAverified
236
561.9
Sean O'Sullivan
Career
Per 600 PA
33
550
Grant Jackson
Careerverified
Per 600 PAverified
0.136
0.136
Sean O'Sullivan
Career
Per 600 PA
0.121
0.121
Grant Jackson
Career
Per 600 PA
0.373
0.373
Sean O'Sullivan
Careerverified
Per 600 PAverified
0.375
0.375
Grant Jackson
Careerverified
Per 600 PAverified
32
76.19
Sean O'Sullivan
Career
Per 600 PA
4
66.67
Grant Jackson
Careerverified
Per 600 PAverified
27
64.29
Sean O'Sullivan
Career
Per 600 PA
2
33.33
Grant Jackson
Career
Per 600 PA
2
4.76
Sean O'Sullivan
Career
Per 600 PAverified
2
33.33
Grant Jackson
Careerverified
Per 600 PAverified
1
2.38
Sean O'Sullivan
Career
Per 600 PA
0
0
Grant Jackson
Careerverified
Per 600 PAverified
2
4.76
Sean O'Sullivan
Career
Per 600 PA
0
0
Grant Jackson
Careerverified
Per 600 PA
5
11.9
Sean O'Sullivan
Career
Per 600 PAverified
2
33.33
Grant Jackson
Career
Per 600 PA
0.156
0.156
Sean O'Sullivan
Careerverified
Per 600 PAverified
0.5
0.5
Grant Jackson
Careerverified
Per 600 PAverified
0.009
0.009
Sean O'Sullivan
Career
Per 600 PA
0
0
Grant Jackson
Careerverified
Per 600 PAverified
0.063
0.063
Sean O'Sullivan
Career
Per 600 PA
0
0
Grant Jackson
Careerverified
Per 600 PAverified
7.48
17.81
Sean O'Sullivan
Career
Per 600 PA
0.94
15.66
Grant Jackson
Careerverified
Per 600 PA
42
100
Sean O'Sullivan
Career
Per 600 PA
6
100
Grant Jackson
Careerverified
Per 600 PAverified
40
95.24
Sean O'Sullivan
Career
Per 600 PA
5
83.33
Grant Jackson
Careerverified
Per 600 PAverified
0.164
0.164
Sean O'Sullivan
Career
Per 600 PA
0.147
0.147
Grant Jackson
Career
Per 600 PA
0.178
0.178
Sean O'Sullivan
Careerverified
Per 600 PAverified
0.182
0.182
Grant Jackson
Careerverified
Per 600 PAverified
0.342
0.342
Sean O'Sullivan
Career
Per 600 PA
0.329
0.329
Grant Jackson
Career
Per 600 PA
0.042
0.042
Sean O'Sullivan
Careerverified
Per 600 PAverified
0.061
0.061
Grant Jackson
Careerverified
Per 600 PAverified
0.118
0.118
Sean O'Sullivan
Career
Per 600 PA
0.112
0.112
Grant Jackson
Careerverified
Per 600 PAverified
0.242
0.242
Sean O'Sullivan
Career
Per 600 PA
0.241
0.241
Grant Jackson
Career
Per 600 PA
0.208
0.208
Sean O'Sullivan
Careerverified
Per 600 PAverified
0.25
0.25
Grant Jackson
Careerverified
Per 600 PA
20
47.62
Sean O'Sullivan
Career
Per 600 PAverified
3
50
Grant Jackson
Careerverified
Per 600 PAverified
17
40.48
Sean O'Sullivan
Career
Per 600 PA
0
0
Grant Jackson
Careerverified
Per 600 PAverified
35
83.33
Sean O'Sullivan
Career
Per 600 PA
3
50
Grant Jackson
Careerverified
Per 600 PAverified
1.36
3.23
Sean O'Sullivan
Career
Per 600 PA
-0.11
-1.78
Grant Jackson
Careerverified
Per 600 PAverified
1
2.38
Sean O'Sullivan
Career
Per 600 PA
0
0
Grant Jackson
Careerverified
Per 600 PA
7
16.67
Sean O'Sullivan
Career
Per 600 PA
1
16.67
Grant Jackson
Career
Per 600 PA
0
0
Sean O'Sullivan
Career
Per 600 PA
0
0
Grant Jackson
Career
Per 600 PAverified
90
214.29
Sean O'Sullivan
Careerverified
Per 600 PA
17
283.33
Grant Jackson
Careerverified
Per 600 PAverified
2.8
2.8
Sean O'Sullivan
Career
Per 600 PA
2.12
2.12
Grant Jackson
Careerverified
Per 600 PAverified
0.08
0.08
Sean O'Sullivan
Career
Per 600 PA
0.06
0.06
Grant Jackson
Careerverified
Per 600 PA
8
19.05
Sean O'Sullivan
Career
Per 600 PAverified
2
33.33
Grant Jackson
Career
Per 600 PA
0
0
Sean O'Sullivan
Career
Per 600 PA
0
0
Grant Jackson
Career
Per 600 PA
3
7.14
Sean O'Sullivan
Careerverified
Per 600 PAverified
0
0
Grant Jackson
Career
Per 600 PA
0
0
Sean O'Sullivan
Career
Per 600 PA
0
0
Grant Jackson
Career
Per 600 PA
0
0
Sean O'Sullivan
Career
Per 600 PA
0
0
Grant Jackson
Career
Per 600 PA
0
0
Sean O'Sullivan
Career
Per 600 PA
0
0
Grant Jackson
Career
Per 600 PA
Sean O'Sullivan
Career
Per 600 PA