Tom Acker vs. Sean O'Sullivan — Career Comparison

Tom Acker
Silent GenerationNew JerseyThrows RightBats RightNorth AmericaCincinnati RedsNational LeagueRelief Pitcher
Sean O'Sullivan
MillenialCaliforniaThrows RightBats RightNorth AmericaKansas City RoyalsAmerican LeagueStarting Pitcher

Sean O'Sullivan built a career as a starting pitcher and Tom Acker as a reliever — different jobs with different demands — but on the metrics that apply to both, a comparison is still worth making. Tom Acker posted stronger surface numbers — ERA 4.12 and WHIP 1.407 compared to 6.01 and 1.616 for Sean O'Sullivan. By the career numbers, Tom Acker had the better of this cross-role comparison — though era context would sharpen the verdict.

Pitching Stats for Tom Acker and Sean O'Sullivan

Tom Acker
Career
Per 9 Innings
4
4
Sean O'Sullivan
Careerverified
Per 9 Inningsverified
7
7
Tom Acker
Careerverified
Per 9 Inningsverified
153
3.62
Sean O'Sullivan
Career
Per 9 Innings
71
1.97
Tom Acker
Career
Per 9 Innings
23
0.54
Sean O'Sullivan
Careerverified
Per 9 Inningsverified
56
1.56
Tom Acker
Careerverified
Per 9 Inningsverified
19
0.45
Sean O'Sullivan
Career
Per 9 Innings
13
0.36
Tom Acker
Careerverified
Per 9 Inningsverified
13
0.31
Sean O'Sullivan
Career
Per 9 Innings
23
0.64
Tom Acker
Careerverified
Per 9 Inningsverified
59.38
59.38
Sean O'Sullivan
Career
Per 9 Innings
36.11
36.11
Tom Acker
Career
Per 9 Innings
15.03
15.03
Sean O'Sullivan
Careerverified
Per 9 Inningsverified
78.87
78.87
Tom Acker
Careerverified
Per 9 Inningsverified
5
0.12
Sean O'Sullivan
Career
Per 9 Innings
0
0
Tom Acker
Careerverified
Per 9 Inningsverified
1
0.02
Sean O'Sullivan
Career
Per 9 Innings
0
0
Tom Acker
Careerverified
Per 9 Inningsverified
8
0.19
Sean O'Sullivan
Career
Per 9 Innings
0
0
Tom Acker
Careerverified
Per 9 Inningsverified
174
4.12
Sean O'Sullivan
Career
Per 9 Innings
216
6.01
Tom Acker
Careerverified
Per 9 Inningsverified
4.12
4.12
Sean O'Sullivan
Career
Per 9 Innings
6.01
6.01
Tom Acker
Careerverified
Per 9 Inningsverified
4.04
4.04
Sean O'Sullivan
Career
Per 9 Innings
5.98
5.98
Tom Acker
Careerverified
Per 9 Inningsverified
4.44
4.44
Sean O'Sullivan
Career
Per 9 Innings
5.58
5.58
Tom Acker
Careerverified
Per 9 Inningsverified
0.25
0.25
Sean O'Sullivan
Career
Per 9 Innings
0.305
0.305
Tom Acker
Careerverified
Per 9 Innings
1141
27
Sean O'Sullivan
Career
Per 9 Innings
971
27
Tom Acker
Careerverified
Per 9 Innings
380.1
9
Sean O'Sullivan
Career
Per 9 Innings
323.2
9
Tom Acker
Careerverified
Per 9 Inningsverified
365
8.64
Sean O'Sullivan
Career
Per 9 Innings
398
11.07
Tom Acker
Careerverified
Per 9 Inningsverified
8.64
8.64
Sean O'Sullivan
Career
Per 9 Innings
11.07
11.07
Tom Acker
Careerverified
Per 9 Inningsverified
43
1.02
Sean O'Sullivan
Career
Per 9 Innings
59
1.64
Tom Acker
Careerverified
Per 9 Inningsverified
1.02
1.02
Sean O'Sullivan
Career
Per 9 Innings
1.64
1.64
Tom Acker
Careerverified
Per 9 Inningsverified
0.28
0.28
Sean O'Sullivan
Career
Per 9 Innings
0.83
0.83
Tom Acker
Career
Per 9 Innings
150
3.55
Sean O'Sullivan
Careerverified
Per 9 Inningsverified
115
3.2
Tom Acker
Career
Per 9 Innings
20
0.47
Sean O'Sullivan
Careerverified
Per 9 Inningsverified
10
0.28
Tom Acker
Career
Per 9 Innings
3.55
3.55
Sean O'Sullivan
Careerverified
Per 9 Inningsverified
3.2
3.2
Tom Acker
Careerverified
Per 9 Inningsverified
256
6.06
Sean O'Sullivan
Career
Per 9 Innings
158
4.39
Tom Acker
Careerverified
Per 9 Inningsverified
6.06
6.06
Sean O'Sullivan
Career
Per 9 Innings
4.39
4.39
Tom Acker
Career
Per 9 Innings
1.67
1.67
Sean O'Sullivan
Careerverified
Per 9 Inningsverified
2.23
2.23
Tom Acker
Careerverified
Per 9 Inningsverified
1.068
1.068
Sean O'Sullivan
Career
Per 9 Innings
0.844
0.844
Tom Acker
Careerverified
Per 9 Inningsverified
6
0.14
Sean O'Sullivan
Career
Per 9 Innings
13
0.36
Tom Acker
Career
Per 9 Innings
17
0.4
Sean O'Sullivan
Careerverified
Per 9 Inningsverified
13
0.36
Tom Acker
Careerverified
Per 9 Inningsverified
0
0
Sean O'Sullivan
Career
Per 9 Innings
2
0.06
Tom Acker
Careerverified
Per 9 Innings
1629
38.55
Sean O'Sullivan
Career
Per 9 Inningsverified
1464
40.71
Tom Acker
Careerverified
Per 9 Inningsverified
35
0.83
Sean O'Sullivan
Career
Per 9 Innings
9
0.25
Tom Acker
Careerverified
Per 9 Inningsverified
181
4.28
Sean O'Sullivan
Career
Per 9 Innings
226
6.28
Tom Acker
Careerverified
Per 9 Inningsverified
4.28
4.28
Sean O'Sullivan
Career
Per 9 Innings
6.28
6.28
Tom Acker
Careerverified
Per 9 Inningsverified
0
0
Sean O'Sullivan
Career
Per 9 Innings
11
0.31
Tom Acker
Careerverified
Per 9 Inningsverified
0
0
Sean O'Sullivan
Career
Per 9 Innings
19
0.53
Tom Acker
Career
Per 9 Innings
0
0
Sean O'Sullivan
Careerverified
Per 9 Inningsverified
32
0.89
Tom Acker
Careerverified
Per 9 Inningsverified
1.354
1.354
Sean O'Sullivan
Career
Per 9 Innings
1.585
1.585
Tom Acker
Careerverified
Per 9 Innings
1462
34.6
Sean O'Sullivan
Career
Per 9 Inningsverified
1306
36.32
Tom Acker
Careerverified
Per 9 Inningsverified
1.18
1.18
Sean O'Sullivan
Career
Per 9 Innings
3.18
3.18
Tom Acker
Careerverified
Per 9 Inningsverified
0.277
0.277
Sean O'Sullivan
Career
Per 9 Innings
0.311
0.311
Tom Acker
Career
Per 9 Innings
38.55
38.55
Sean O'Sullivan
Careerverified
Per 9 Inningsverified
40.71
40.71

Fielding Stats for Tom Acker and Sean O'Sullivan

Tom Acker
Career
Per 9 Innings
4
4
Sean O'Sullivan
Careerverified
Per 9 Inningsverified
7
7
Tom Acker
Careerverified
Per 9 Inningsverified
153
3.62
Sean O'Sullivan
Career
Per 9 Innings
71
1.97
Tom Acker
Career
Per 9 Innings
23
0.54
Sean O'Sullivan
Careerverified
Per 9 Inningsverified
56
1.56
Tom Acker
Careerverified
Per 9 Innings
1141
27
Sean O'Sullivan
Career
Per 9 Innings
971
27
Tom Acker
Careerverified
Per 9 Innings
380.1
9
Sean O'Sullivan
Career
Per 9 Innings
323.2
9
Tom Acker
Career
Per 9 Innings
19
0.45
Sean O'Sullivan
Careerverified
Per 9 Inningsverified
22
0.61
Tom Acker
Careerverified
Per 9 Inningsverified
49
1.16
Sean O'Sullivan
Career
Per 9 Innings
31
0.86
Tom Acker
Careerverified
Per 9 Inningsverified
1
0.02
Sean O'Sullivan
Career
Per 9 Innings
3
0.08
Tom Acker
Careerverified
Per 9 Inningsverified
69
1.63
Sean O'Sullivan
Career
Per 9 Innings
56
1.56
Tom Acker
Careerverified
Per 9 Inningsverified
68
1.61
Sean O'Sullivan
Career
Per 9 Innings
53
1.47
Tom Acker
Careerverified
Per 9 Inningsverified
98.55
98.55
Sean O'Sullivan
Career
Per 9 Innings
94.64
94.64
Tom Acker
Career
Per 9 Innings
0.444
0.444
Sean O'Sullivan
Careerverified
Per 9 Inningsverified
0.747
0.747
Tom Acker
Career
Per 9 Innings
15.03
15.03
Sean O'Sullivan
Careerverified
Per 9 Inningsverified
78.87
78.87
Tom Acker
Career
Per 9 Innings
1
0.02
Sean O'Sullivan
Careerverified
Per 9 Inningsverified
2
0.06
Tom Acker
Career
Per 9 Innings
0
0
Sean O'Sullivan
Career
Per 9 Innings
0
0
Tom Acker
Career
Per 9 Innings
0
0
Sean O'Sullivan
Career
Per 9 Innings
0
0
Tom Acker
Career
Per 9 Innings
0
0
Sean O'Sullivan
Career
Per 9 Innings
0
0
Tom Acker
Career
Per 9 Innings
0
0
Sean O'Sullivan
Career
Per 9 Innings
0
0

Hitting Stats for Tom Acker and Sean O'Sullivan

Tom Acker
Career
Per 600 PA
4
4
Sean O'Sullivan
Careerverified
Per 600 PAverified
7
7
Tom Acker
Careerverified
Per 600 PA
153
956.25
Sean O'Sullivan
Career
Per 600 PAverified
71
1183.33
Tom Acker
Careerverified
Per 600 PA
96
600
Sean O'Sullivan
Career
Per 600 PA
36
600
Tom Acker
Careerverified
Per 600 PA
77
481.25
Sean O'Sullivan
Career
Per 600 PAverified
33
550
Tom Acker
Career
Per 600 PA
0.065
0.065
Sean O'Sullivan
Careerverified
Per 600 PAverified
0.121
0.121
Tom Acker
Career
Per 600 PA
0.37
0.37
Sean O'Sullivan
Careerverified
Per 600 PAverified
0.375
0.375
Tom Acker
Careerverified
Per 600 PA
5
31.25
Sean O'Sullivan
Career
Per 600 PAverified
4
66.67
Tom Acker
Careerverified
Per 600 PA
5
31.25
Sean O'Sullivan
Career
Per 600 PAverified
2
33.33
Tom Acker
Career
Per 600 PA
0
0
Sean O'Sullivan
Careerverified
Per 600 PAverified
2
33.33
Tom Acker
Career
Per 600 PA
0
0
Sean O'Sullivan
Career
Per 600 PA
0
0
Tom Acker
Career
Per 600 PA
0
0
Sean O'Sullivan
Career
Per 600 PA
0
0
Tom Acker
Career
Per 600 PA
0
0
Sean O'Sullivan
Careerverified
Per 600 PAverified
2
33.33
Tom Acker
Career
Per 600 PA
0
0
Sean O'Sullivan
Careerverified
Per 600 PAverified
0.5
0.5
Tom Acker
Career
Per 600 PA
0
0
Sean O'Sullivan
Career
Per 600 PA
0
0
Tom Acker
Career
Per 600 PA
0
0
Sean O'Sullivan
Career
Per 600 PA
0
0
Tom Acker
Careerverified
Per 600 PA
1.12
7
Sean O'Sullivan
Career
Per 600 PAverified
0.94
15.66
Tom Acker
Career
Per 600 PA
5
31.25
Sean O'Sullivan
Careerverified
Per 600 PAverified
6
100
Tom Acker
Careerverified
Per 600 PAverified
18
112.5
Sean O'Sullivan
Career
Per 600 PA
5
83.33
Tom Acker
Careerverified
Per 600 PAverified
0.2
0.2
Sean O'Sullivan
Career
Per 600 PA
0.147
0.147
Tom Acker
Career
Per 600 PA
0.065
0.065
Sean O'Sullivan
Careerverified
Per 600 PAverified
0.182
0.182
Tom Acker
Career
Per 600 PA
0.265
0.265
Sean O'Sullivan
Careerverified
Per 600 PAverified
0.329
0.329
Tom Acker
Career
Per 600 PA
0
0
Sean O'Sullivan
Careerverified
Per 600 PAverified
0.061
0.061
Tom Acker
Career
Per 600 PA
0.106
0.106
Sean O'Sullivan
Careerverified
Per 600 PAverified
0.112
0.112
Tom Acker
Careerverified
Per 600 PAverified
0.247
0.247
Sean O'Sullivan
Career
Per 600 PA
0.241
0.241
Tom Acker
Career
Per 600 PA
0.161
0.161
Sean O'Sullivan
Careerverified
Per 600 PAverified
0.25
0.25
Tom Acker
Careerverified
Per 600 PAverified
10
62.5
Sean O'Sullivan
Career
Per 600 PA
3
50
Tom Acker
Careerverified
Per 600 PAverified
2
12.5
Sean O'Sullivan
Career
Per 600 PA
0
0
Tom Acker
Careerverified
Per 600 PAverified
12
75
Sean O'Sullivan
Career
Per 600 PA
3
50
Tom Acker
Career
Per 600 PA
-0.75
-4.66
Sean O'Sullivan
Careerverified
Per 600 PAverified
-0.11
-1.78
Tom Acker
Careerverified
Per 600 PAverified
1
6.25
Sean O'Sullivan
Career
Per 600 PA
0
0
Tom Acker
Careerverified
Per 600 PAverified
12
75
Sean O'Sullivan
Career
Per 600 PA
1
16.67
Tom Acker
Career
Per 600 PA
0
0
Sean O'Sullivan
Career
Per 600 PA
0
0
Tom Acker
Career
Per 600 PA
46
287.5
Sean O'Sullivan
Careerverified
Per 600 PAverified
17
283.33
Tom Acker
Career
Per 600 PA
2.09
2.09
Sean O'Sullivan
Careerverified
Per 600 PAverified
2.12
2.12
Tom Acker
Careerverified
Per 600 PAverified
0.26
0.26
Sean O'Sullivan
Career
Per 600 PA
0.06
0.06
Tom Acker
Careerverified
Per 600 PAverified
6
37.5
Sean O'Sullivan
Career
Per 600 PA
2
33.33
Tom Acker
Career
Per 600 PA
0
0
Sean O'Sullivan
Career
Per 600 PA
0
0
Tom Acker
Career
Per 600 PA
1
6.25
Sean O'Sullivan
Careerverified
Per 600 PAverified
0
0
Tom Acker
Career
Per 600 PA
0
0
Sean O'Sullivan
Career
Per 600 PA
0
0
Tom Acker
Career
Per 600 PA
0
0
Sean O'Sullivan
Career
Per 600 PA
0
0
Tom Acker
Career
Per 600 PA
0
0
Sean O'Sullivan
Career
Per 600 PA
0
0
Tom Acker
Career
Per 600 PA
Sean O'Sullivan
Career
Per 600 PA