Antonio Alfonseca vs. Sidney Williams — Career Comparison

Antonio Alfonseca
Gen XD.R.Throws RightBats RightCaribbeanFlorida MarlinsNational LeagueRelief Pitcher
Sidney Williams
Greatest GenerationGeorgiaThrows RightNorth AmericaNewark EaglesNegro National League IIStarting Pitcher

Sidney Williams built a career as a starting pitcher and Antonio Alfonseca as a reliever — different jobs with different demands — but on the metrics that apply to both, a comparison is still worth making. Antonio Alfonseca posted stronger surface numbers — ERA 4.11 and WHIP 1.586 compared to 4.28 and 1.610 for Sidney Williams. By the career numbers, Antonio Alfonseca had the better of this cross-role comparison — though era context would sharpen the verdict.

Pitching Stats for Antonio Alfonseca and Sidney Williams

Antonio Alfonseca
Careerverified
Per 9 Inningsverified
11
11
Sidney Williams
Career
Per 9 Innings
2
2
Antonio Alfonseca
Careerverified
Per 9 Inningsverified
592
8.69
Sidney Williams
Career
Per 9 Innings
6
1.98
Antonio Alfonseca
Career
Per 9 Innings
0
0
Sidney Williams
Careerverified
Per 9 Inningsverified
2
0.66
Antonio Alfonseca
Careerverified
Per 9 Inningsverified
35
0.51
Sidney Williams
Career
Per 9 Innings
1
0.33
Antonio Alfonseca
Career
Per 9 Innings
37
0.54
Sidney Williams
Careerverified
Per 9 Inningsverified
1
0.33
Antonio Alfonseca
Career
Per 9 Innings
48.61
48.61
Sidney Williams
Careerverified
Per 9 Inningsverified
50
50
Antonio Alfonseca
Career
Per 9 Innings
0
0
Sidney Williams
Careerverified
Per 9 Inningsverified
33.33
33.33
Antonio Alfonseca
Career
Per 9 Innings
0
0
Sidney Williams
Careerverified
Per 9 Inningsverified
2
0.66
Antonio Alfonseca
Career
Per 9 Innings
0
0
Sidney Williams
Career
Per 9 Innings
0
0
Antonio Alfonseca
Careerverified
Per 9 Inningsverified
129
1.89
Sidney Williams
Career
Per 9 Innings
0
0
Antonio Alfonseca
Career
Per 9 Inningsverified
280
4.11
Sidney Williams
Careerverified
Per 9 Innings
13
4.28
Antonio Alfonseca
Careerverified
Per 9 Inningsverified
4.11
4.11
Sidney Williams
Career
Per 9 Innings
4.28
4.28
Antonio Alfonseca
Career
Per 9 Innings
4.67
4.67
Sidney Williams
Careerverified
Per 9 Inningsverified
4.5
4.5
Antonio Alfonseca
Careerverified
Per 9 Inningsverified
4.19
4.19
Sidney Williams
Career
Per 9 Innings
4.46
4.46
Antonio Alfonseca
Career
Per 9 Innings
0.284
0.284
Sidney Williams
Careerverified
Per 9 Inningsverified
0.274
0.274
Antonio Alfonseca
Careerverified
Per 9 Innings
1839
27
Sidney Williams
Career
Per 9 Innings
82
27
Antonio Alfonseca
Careerverified
Per 9 Innings
613
9
Sidney Williams
Career
Per 9 Innings
27.1
9
Antonio Alfonseca
Career
Per 9 Inningsverified
677
9.94
Sidney Williams
Careerverified
Per 9 Innings
31
10.21
Antonio Alfonseca
Careerverified
Per 9 Inningsverified
9.94
9.94
Sidney Williams
Career
Per 9 Innings
10.21
10.21
Antonio Alfonseca
Career
Per 9 Innings
55
0.81
Sidney Williams
Careerverified
Per 9 Inningsverified
1
0.33
Antonio Alfonseca
Career
Per 9 Innings
0.81
0.81
Sidney Williams
Careerverified
Per 9 Inningsverified
0.33
0.33
Antonio Alfonseca
Careerverified
Per 9 Inningsverified
0.09
0.09
Sidney Williams
Career
Per 9 Innings
0.17
0.17
Antonio Alfonseca
Career
Per 9 Inningsverified
250
3.67
Sidney Williams
Careerverified
Per 9 Innings
13
4.28
Antonio Alfonseca
Career
Per 9 Innings
45
0.66
Sidney Williams
Careerverified
Per 9 Inningsverified
0
0
Antonio Alfonseca
Careerverified
Per 9 Inningsverified
3.67
3.67
Sidney Williams
Career
Per 9 Innings
4.28
4.28
Antonio Alfonseca
Careerverified
Per 9 Inningsverified
400
5.87
Sidney Williams
Career
Per 9 Innings
6
1.98
Antonio Alfonseca
Careerverified
Per 9 Inningsverified
5.87
5.87
Sidney Williams
Career
Per 9 Innings
1.98
1.98
Antonio Alfonseca
Career
Per 9 Innings
0.68
0.68
Sidney Williams
Careerverified
Per 9 Inningsverified
1
1
Antonio Alfonseca
Careerverified
Per 9 Inningsverified
1.06
1.06
Sidney Williams
Career
Per 9 Innings
0.695
0.695
Antonio Alfonseca
Career
Per 9 Inningsverified
13
0.19
Sidney Williams
Careerverified
Per 9 Innings
1
0.33
Antonio Alfonseca
Career
Per 9 Innings
22
0.32
Sidney Williams
Careerverified
Per 9 Inningsverified
0
0
Antonio Alfonseca
Career
Per 9 Innings
2
0.03
Sidney Williams
Careerverified
Per 9 Inningsverified
0
0
Antonio Alfonseca
Careerverified
Per 9 Innings
2710
39.79
Sidney Williams
Career
Per 9 Inningsverified
127
41.82
Antonio Alfonseca
Careerverified
Per 9 Inningsverified
301
4.42
Sidney Williams
Career
Per 9 Innings
2
0.66
Antonio Alfonseca
Career
Per 9 Inningsverified
296
4.35
Sidney Williams
Careerverified
Per 9 Innings
16
5.27
Antonio Alfonseca
Careerverified
Per 9 Inningsverified
4.35
4.35
Sidney Williams
Career
Per 9 Innings
5.27
5.27
Antonio Alfonseca
Career
Per 9 Innings
36
0.53
Sidney Williams
Careerverified
Per 9 Inningsverified
1
0.33
Antonio Alfonseca
Career
Per 9 Innings
18
0.26
Sidney Williams
Careerverified
Per 9 Inningsverified
0
0
Antonio Alfonseca
Careerverified
Per 9 Inningsverified
79
1.16
Sidney Williams
Career
Per 9 Innings
2
0.66
Antonio Alfonseca
Careerverified
Per 9 Inningsverified
1.512
1.512
Sidney Williams
Career
Per 9 Innings
1.61
1.61
Antonio Alfonseca
Careerverified
Per 9 Innings
2384
35
Sidney Williams
Career
Per 9 Inningsverified
113
37.21
Antonio Alfonseca
Careerverified
Per 9 Inningsverified
0.5
0.5
Sidney Williams
Career
Per 9 Innings
2.67
2.67
Antonio Alfonseca
Career
Per 9 Innings
0.322
0.322
Sidney Williams
Careerverified
Per 9 Inningsverified
0.283
0.283
Antonio Alfonseca
Career
Per 9 Innings
39.79
39.79
Sidney Williams
Careerverified
Per 9 Inningsverified
41.82
41.82

Fielding Stats for Antonio Alfonseca and Sidney Williams

Antonio Alfonseca
Careerverified
Per 9 Inningsverified
11
11
Sidney Williams
Career
Per 9 Innings
2
2
Antonio Alfonseca
Careerverified
Per 9 Inningsverified
592
8.69
Sidney Williams
Career
Per 9 Innings
10
1.44
Antonio Alfonseca
Career
Per 9 Innings
0
0
Sidney Williams
Careerverified
Per 9 Inningsverified
6
0.87
Antonio Alfonseca
Careerverified
Per 9 Innings
1839
27
Sidney Williams
Career
Per 9 Innings
187
27
Antonio Alfonseca
Careerverified
Per 9 Innings
613
9
Sidney Williams
Career
Per 9 Innings
62.1
9
Antonio Alfonseca
Careerverified
Per 9 Innings
31
0.46
Sidney Williams
Career
Per 9 Inningsverified
6
0.87
Antonio Alfonseca
Careerverified
Per 9 Inningsverified
84
1.23
Sidney Williams
Career
Per 9 Innings
8
1.16
Antonio Alfonseca
Career
Per 9 Innings
4
0.06
Sidney Williams
Careerverified
Per 9 Inningsverified
0
0
Antonio Alfonseca
Careerverified
Per 9 Innings
119
1.75
Sidney Williams
Career
Per 9 Inningsverified
14
2.02
Antonio Alfonseca
Careerverified
Per 9 Innings
115
1.69
Sidney Williams
Career
Per 9 Inningsverified
14
2.02
Antonio Alfonseca
Career
Per 9 Innings
96.64
96.64
Sidney Williams
Careerverified
Per 9 Inningsverified
100
100
Antonio Alfonseca
Career
Per 9 Innings
0.194
0.194
Sidney Williams
Careerverified
Per 9 Inningsverified
1.4
1.4
Antonio Alfonseca
Career
Per 9 Innings
0
0
Sidney Williams
Careerverified
Per 9 Inningsverified
60
60
Antonio Alfonseca
Careerverified
Per 9 Inningsverified
8
0.12
Sidney Williams
Career
Per 9 Innings
0
0
Antonio Alfonseca
Career
Per 9 Innings
0
0
Sidney Williams
Career
Per 9 Innings
0
0
Antonio Alfonseca
Career
Per 9 Innings
0
0
Sidney Williams
Career
Per 9 Innings
0
0
Antonio Alfonseca
Career
Per 9 Innings
0
0
Sidney Williams
Career
Per 9 Innings
0
0
Antonio Alfonseca
Career
Per 9 Innings
0
0
Sidney Williams
Career
Per 9 Innings
0
0

Hitting Stats for Antonio Alfonseca and Sidney Williams

Antonio Alfonseca
Careerverified
Per 600 PAverified
11
11
Sidney Williams
Career
Per 600 PA
2
2
Antonio Alfonseca
Careerverified
Per 600 PAverified
592
23680
Sidney Williams
Career
Per 600 PA
11
200
Antonio Alfonseca
Career
Per 600 PA
15
600
Sidney Williams
Careerverified
Per 600 PA
33
600
Antonio Alfonseca
Career
Per 600 PA
14
560
Sidney Williams
Careerverified
Per 600 PAverified
31
563.64
Antonio Alfonseca
Career
Per 600 PA
0.143
0.143
Sidney Williams
Careerverified
Per 600 PAverified
0.29
0.29
Antonio Alfonseca
Career
Per 600 PA
0.333
0.333
Sidney Williams
Careerverified
Per 600 PAverified
0.87
0.87
Antonio Alfonseca
Career
Per 600 PA
2
80
Sidney Williams
Careerverified
Per 600 PAverified
9
163.64
Antonio Alfonseca
Career
Per 600 PAverified
2
80
Sidney Williams
Careerverified
Per 600 PA
4
72.73
Antonio Alfonseca
Career
Per 600 PA
0
0
Sidney Williams
Careerverified
Per 600 PAverified
4
72.73
Antonio Alfonseca
Career
Per 600 PA
0
0
Sidney Williams
Career
Per 600 PA
0
0
Antonio Alfonseca
Career
Per 600 PA
0
0
Sidney Williams
Careerverified
Per 600 PAverified
1
18.18
Antonio Alfonseca
Career
Per 600 PA
0
0
Sidney Williams
Careerverified
Per 600 PAverified
5
90.91
Antonio Alfonseca
Career
Per 600 PA
0
0
Sidney Williams
Careerverified
Per 600 PAverified
0.556
0.556
Antonio Alfonseca
Career
Per 600 PA
0
0
Sidney Williams
Careerverified
Per 600 PAverified
0.032
0.032
Antonio Alfonseca
Career
Per 600 PA
0
0
Sidney Williams
Careerverified
Per 600 PAverified
0.111
0.111
Antonio Alfonseca
Career
Per 600 PA
0.26
10.23
Sidney Williams
Careerverified
Per 600 PAverified
5.3
96.4
Antonio Alfonseca
Career
Per 600 PA
2
80
Sidney Williams
Careerverified
Per 600 PAverified
16
290.91
Antonio Alfonseca
Career
Per 600 PA
2
80
Sidney Williams
Careerverified
Per 600 PAverified
11
200
Antonio Alfonseca
Career
Per 600 PA
0.143
0.143
Sidney Williams
Careerverified
Per 600 PAverified
0.333
0.333
Antonio Alfonseca
Career
Per 600 PA
0.143
0.143
Sidney Williams
Careerverified
Per 600 PAverified
0.516
0.516
Antonio Alfonseca
Career
Per 600 PA
0.286
0.286
Sidney Williams
Careerverified
Per 600 PAverified
0.849
0.849
Antonio Alfonseca
Career
Per 600 PA
0
0
Sidney Williams
Careerverified
Per 600 PAverified
0.226
0.226
Antonio Alfonseca
Career
Per 600 PA
0.1
0.1
Sidney Williams
Careerverified
Per 600 PAverified
0.279
0.279
Antonio Alfonseca
Career
Per 600 PA
0.167
0.167
Sidney Williams
Careerverified
Per 600 PAverified
0.864
0.864
Antonio Alfonseca
Careerverified
Per 600 PAverified
0.333
0.333
Sidney Williams
Career
Per 600 PA
0.267
0.267
Antonio Alfonseca
Career
Per 600 PA
0
0
Sidney Williams
Careerverified
Per 600 PAverified
3
54.55
Antonio Alfonseca
Career
Per 600 PAverified
2
80
Sidney Williams
Careerverified
Per 600 PA
3
54.55
Antonio Alfonseca
Career
Per 600 PA
2
80
Sidney Williams
Careerverified
Per 600 PAverified
5
90.91
Antonio Alfonseca
Career
Per 600 PA
-0.08
-3.25
Sidney Williams
Careerverified
Per 600 PAverified
5.4
98.12
Antonio Alfonseca
Career
Per 600 PA
0
0
Sidney Williams
Career
Per 600 PA
0
0
Antonio Alfonseca
Career
Per 600 PA
0
0
Sidney Williams
Careerverified
Per 600 PAverified
2
36.36
Antonio Alfonseca
Career
Per 600 PA
0
0
Sidney Williams
Career
Per 600 PA
0
0
Antonio Alfonseca
Career
Per 600 PA
8
320
Sidney Williams
Careerverified
Per 600 PAverified
0
0
Antonio Alfonseca
Careerverified
Per 600 PAverified
1.88
1.88
Sidney Williams
Career
Per 600 PA
Antonio Alfonseca
Career
Per 600 PA
0
0
Sidney Williams
Career
Per 600 PA
Antonio Alfonseca
Careerverified
Per 600 PAverified
1
40
Sidney Williams
Career
Per 600 PA
0
0
Antonio Alfonseca
Career
Per 600 PA
0
0
Sidney Williams
Career
Per 600 PA
0
0
Antonio Alfonseca
Career
Per 600 PA
0
0
Sidney Williams
Career
Per 600 PA
0
0
Antonio Alfonseca
Career
Per 600 PA
0
0
Sidney Williams
Careerverified
Per 600 PAverified
1
18.18
Antonio Alfonseca
Career
Per 600 PA
0
0
Sidney Williams
Career
Per 600 PA
0
0
Antonio Alfonseca
Career
Per 600 PA
0
0
Sidney Williams
Careerverified
Per 600 PAverified
1
18.18
Antonio Alfonseca
Career
Per 600 PA
Sidney Williams
Careerverified
Per 600 PAverified
100
100