Jeremy Affeldt vs. Zach Jackson — Career Comparison

Jeremy Affeldt
Gen XArizonaThrows LeftBats LeftNorth AmericaSan Francisco GiantsNational LeagueRelief Pitcher
Zach Jackson
MillenialPennsylvaniaThrows LeftBats LeftNorth AmericaCleveland GuardiansAmerican LeagueStarting Pitcher

Zach Jackson built a career as a starting pitcher and Jeremy Affeldt as a reliever — different jobs with different demands — but on the metrics that apply to both, a comparison is still worth making. Jeremy Affeldt posted stronger surface numbers — ERA 3.97 and WHIP 1.448 compared to 5.81 and 1.566 for Zach Jackson. By the career numbers, Jeremy Affeldt had the better of this cross-role comparison — though era context would sharpen the verdict.

Pitching Stats for Jeremy Affeldt and Zach Jackson

Jeremy Affeldt
Careerverified
Per 9 Inningsverified
14
14
Zach Jackson
Career
Per 9 Innings
3
3
Jeremy Affeldt
Careerverified
Per 9 Inningsverified
774
7.52
Zach Jackson
Career
Per 9 Innings
22
1.88
Jeremy Affeldt
Careerverified
Per 9 Innings
42
0.41
Zach Jackson
Career
Per 9 Inningsverified
17
1.45
Jeremy Affeldt
Careerverified
Per 9 Inningsverified
43
0.42
Zach Jackson
Career
Per 9 Innings
4
0.34
Jeremy Affeldt
Career
Per 9 Innings
46
0.45
Zach Jackson
Careerverified
Per 9 Inningsverified
5
0.43
Jeremy Affeldt
Careerverified
Per 9 Inningsverified
48.31
48.31
Zach Jackson
Career
Per 9 Innings
44.44
44.44
Jeremy Affeldt
Career
Per 9 Innings
5.43
5.43
Zach Jackson
Careerverified
Per 9 Inningsverified
77.27
77.27
Jeremy Affeldt
Career
Per 9 Innings
0
0
Zach Jackson
Career
Per 9 Innings
0
0
Jeremy Affeldt
Career
Per 9 Innings
0
0
Zach Jackson
Career
Per 9 Innings
0
0
Jeremy Affeldt
Careerverified
Per 9 Inningsverified
28
0.27
Zach Jackson
Career
Per 9 Innings
0
0
Jeremy Affeldt
Career
Per 9 Inningsverified
408
3.97
Zach Jackson
Careerverified
Per 9 Innings
68
5.81
Jeremy Affeldt
Careerverified
Per 9 Inningsverified
3.97
3.97
Zach Jackson
Career
Per 9 Innings
5.81
5.81
Jeremy Affeldt
Careerverified
Per 9 Inningsverified
4.02
4.02
Zach Jackson
Career
Per 9 Innings
5.84
5.84
Jeremy Affeldt
Careerverified
Per 9 Inningsverified
3.93
3.93
Zach Jackson
Career
Per 9 Innings
4.88
4.88
Jeremy Affeldt
Careerverified
Per 9 Inningsverified
0.256
0.256
Zach Jackson
Career
Per 9 Innings
0.303
0.303
Jeremy Affeldt
Careerverified
Per 9 Innings
2778
27
Zach Jackson
Career
Per 9 Innings
316
27
Jeremy Affeldt
Careerverified
Per 9 Innings
926
9
Zach Jackson
Career
Per 9 Innings
105.1
9
Jeremy Affeldt
Career
Per 9 Inningsverified
904
8.79
Zach Jackson
Careerverified
Per 9 Innings
131
11.19
Jeremy Affeldt
Careerverified
Per 9 Inningsverified
8.79
8.79
Zach Jackson
Career
Per 9 Innings
11.19
11.19
Jeremy Affeldt
Career
Per 9 Inningsverified
76
0.74
Zach Jackson
Careerverified
Per 9 Innings
15
1.28
Jeremy Affeldt
Careerverified
Per 9 Inningsverified
0.74
0.74
Zach Jackson
Career
Per 9 Innings
1.28
1.28
Jeremy Affeldt
Careerverified
Per 9 Inningsverified
0.1
0.1
Zach Jackson
Career
Per 9 Innings
0.68
0.68
Jeremy Affeldt
Career
Per 9 Innings
396
3.85
Zach Jackson
Careerverified
Per 9 Inningsverified
34
2.91
Jeremy Affeldt
Career
Per 9 Innings
41
0.4
Zach Jackson
Careerverified
Per 9 Inningsverified
0
0
Jeremy Affeldt
Career
Per 9 Innings
3.85
3.85
Zach Jackson
Careerverified
Per 9 Inningsverified
2.91
2.91
Jeremy Affeldt
Careerverified
Per 9 Inningsverified
720
7
Zach Jackson
Career
Per 9 Innings
63
5.38
Jeremy Affeldt
Careerverified
Per 9 Inningsverified
7
7
Zach Jackson
Career
Per 9 Innings
5.38
5.38
Jeremy Affeldt
Career
Per 9 Innings
0.93
0.93
Zach Jackson
Careerverified
Per 9 Inningsverified
2.86
2.86
Jeremy Affeldt
Careerverified
Per 9 Inningsverified
1.205
1.205
Zach Jackson
Career
Per 9 Innings
0.921
0.921
Jeremy Affeldt
Career
Per 9 Innings
55
0.53
Zach Jackson
Careerverified
Per 9 Inningsverified
3
0.26
Jeremy Affeldt
Career
Per 9 Inningsverified
42
0.41
Zach Jackson
Careerverified
Per 9 Innings
9
0.77
Jeremy Affeldt
Career
Per 9 Innings
9
0.09
Zach Jackson
Careerverified
Per 9 Inningsverified
0
0
Jeremy Affeldt
Careerverified
Per 9 Innings
4034
39.21
Zach Jackson
Career
Per 9 Inningsverified
481
41.1
Jeremy Affeldt
Careerverified
Per 9 Inningsverified
162
1.57
Zach Jackson
Career
Per 9 Innings
3
0.26
Jeremy Affeldt
Career
Per 9 Inningsverified
455
4.42
Zach Jackson
Careerverified
Per 9 Innings
74
6.32
Jeremy Affeldt
Careerverified
Per 9 Inningsverified
4.42
4.42
Zach Jackson
Career
Per 9 Innings
6.32
6.32
Jeremy Affeldt
Career
Per 9 Innings
42
0.41
Zach Jackson
Careerverified
Per 9 Inningsverified
2
0.17
Jeremy Affeldt
Career
Per 9 Inningsverified
25
0.24
Zach Jackson
Careerverified
Per 9 Innings
3
0.26
Jeremy Affeldt
Careerverified
Per 9 Innings
102
0.99
Zach Jackson
Career
Per 9 Inningsverified
14
1.2
Jeremy Affeldt
Careerverified
Per 9 Inningsverified
1.404
1.404
Zach Jackson
Career
Per 9 Innings
1.567
1.567
Jeremy Affeldt
Careerverified
Per 9 Innings
3529
34.3
Zach Jackson
Career
Per 9 Inningsverified
433
37
Jeremy Affeldt
Careerverified
Per 9 Inningsverified
0.59
0.59
Zach Jackson
Career
Per 9 Innings
3.36
3.36
Jeremy Affeldt
Careerverified
Per 9 Inningsverified
0.303
0.303
Zach Jackson
Career
Per 9 Innings
0.327
0.327
Jeremy Affeldt
Career
Per 9 Innings
39.21
39.21
Zach Jackson
Careerverified
Per 9 Inningsverified
41.1
41.1

Fielding Stats for Jeremy Affeldt and Zach Jackson

Jeremy Affeldt
Careerverified
Per 9 Inningsverified
14
14
Zach Jackson
Career
Per 9 Innings
3
3
Jeremy Affeldt
Careerverified
Per 9 Inningsverified
774
7.52
Zach Jackson
Career
Per 9 Innings
22
1.88
Jeremy Affeldt
Careerverified
Per 9 Innings
42
0.41
Zach Jackson
Career
Per 9 Inningsverified
17
1.45
Jeremy Affeldt
Careerverified
Per 9 Innings
2778
27
Zach Jackson
Career
Per 9 Innings
316
27
Jeremy Affeldt
Careerverified
Per 9 Innings
926
9
Zach Jackson
Career
Per 9 Innings
105.1
9
Jeremy Affeldt
Careerverified
Per 9 Innings
45
0.44
Zach Jackson
Career
Per 9 Inningsverified
6
0.51
Jeremy Affeldt
Careerverified
Per 9 Inningsverified
184
1.79
Zach Jackson
Career
Per 9 Innings
18
1.54
Jeremy Affeldt
Career
Per 9 Inningsverified
13
0.13
Zach Jackson
Careerverified
Per 9 Innings
3
0.26
Jeremy Affeldt
Careerverified
Per 9 Inningsverified
242
2.35
Zach Jackson
Career
Per 9 Innings
27
2.31
Jeremy Affeldt
Careerverified
Per 9 Inningsverified
229
2.23
Zach Jackson
Career
Per 9 Innings
24
2.05
Jeremy Affeldt
Careerverified
Per 9 Inningsverified
94.63
94.63
Zach Jackson
Career
Per 9 Innings
88.89
88.89
Jeremy Affeldt
Career
Per 9 Innings
0.296
0.296
Zach Jackson
Careerverified
Per 9 Inningsverified
1.091
1.091
Jeremy Affeldt
Career
Per 9 Innings
5.43
5.43
Zach Jackson
Careerverified
Per 9 Inningsverified
77.27
77.27
Jeremy Affeldt
Careerverified
Per 9 Innings
13
0.13
Zach Jackson
Career
Per 9 Inningsverified
2
0.17
Jeremy Affeldt
Career
Per 9 Innings
0
0
Zach Jackson
Career
Per 9 Innings
0
0
Jeremy Affeldt
Career
Per 9 Innings
0
0
Zach Jackson
Career
Per 9 Innings
0
0
Jeremy Affeldt
Career
Per 9 Innings
0
0
Zach Jackson
Career
Per 9 Innings
0
0
Jeremy Affeldt
Career
Per 9 Innings
0
0
Zach Jackson
Career
Per 9 Innings
0
0

Hitting Stats for Jeremy Affeldt and Zach Jackson

Jeremy Affeldt
Careerverified
Per 600 PAverified
14
14
Zach Jackson
Career
Per 600 PA
3
3
Jeremy Affeldt
Careerverified
Per 600 PAverified
774
24442.11
Zach Jackson
Career
Per 600 PA
22
1015.38
Jeremy Affeldt
Careerverified
Per 600 PA
19
600
Zach Jackson
Career
Per 600 PA
13
600
Jeremy Affeldt
Careerverified
Per 600 PAverified
17
536.84
Zach Jackson
Career
Per 600 PA
9
415.38
Jeremy Affeldt
Careerverified
Per 600 PAverified
0.177
0.177
Zach Jackson
Career
Per 600 PA
0.111
0.111
Jeremy Affeldt
Careerverified
Per 600 PAverified
0.474
0.474
Zach Jackson
Career
Per 600 PA
0.462
0.462
Jeremy Affeldt
Careerverified
Per 600 PAverified
3
94.74
Zach Jackson
Career
Per 600 PA
1
46.15
Jeremy Affeldt
Careerverified
Per 600 PAverified
3
94.74
Zach Jackson
Career
Per 600 PA
1
46.15
Jeremy Affeldt
Career
Per 600 PA
0
0
Zach Jackson
Career
Per 600 PA
0
0
Jeremy Affeldt
Career
Per 600 PA
0
0
Zach Jackson
Career
Per 600 PA
0
0
Jeremy Affeldt
Career
Per 600 PA
0
0
Zach Jackson
Career
Per 600 PA
0
0
Jeremy Affeldt
Career
Per 600 PA
0
0
Zach Jackson
Career
Per 600 PA
0
0
Jeremy Affeldt
Career
Per 600 PA
0
0
Zach Jackson
Career
Per 600 PA
0
0
Jeremy Affeldt
Career
Per 600 PA
0
0
Zach Jackson
Career
Per 600 PA
0
0
Jeremy Affeldt
Career
Per 600 PA
0
0
Zach Jackson
Career
Per 600 PA
0
0
Jeremy Affeldt
Careerverified
Per 600 PAverified
0.85
26.78
Zach Jackson
Career
Per 600 PA
0.1
4.57
Jeremy Affeldt
Careerverified
Per 600 PAverified
3
94.74
Zach Jackson
Career
Per 600 PA
1
46.15
Jeremy Affeldt
Careerverified
Per 600 PAverified
5
157.89
Zach Jackson
Career
Per 600 PA
1
46.15
Jeremy Affeldt
Careerverified
Per 600 PAverified
0.263
0.263
Zach Jackson
Career
Per 600 PA
0.111
0.111
Jeremy Affeldt
Careerverified
Per 600 PAverified
0.177
0.177
Zach Jackson
Career
Per 600 PA
0.111
0.111
Jeremy Affeldt
Careerverified
Per 600 PAverified
0.44
0.44
Zach Jackson
Career
Per 600 PA
0.222
0.222
Jeremy Affeldt
Career
Per 600 PA
0
0
Zach Jackson
Career
Per 600 PA
0
0
Jeremy Affeldt
Careerverified
Per 600 PAverified
0.163
0.163
Zach Jackson
Career
Per 600 PA
0.078
0.078
Jeremy Affeldt
Careerverified
Per 600 PAverified
0.357
0.357
Zach Jackson
Career
Per 600 PA
0.125
0.125
Jeremy Affeldt
Careerverified
Per 600 PAverified
0.273
0.273
Zach Jackson
Career
Per 600 PA
0.143
0.143
Jeremy Affeldt
Career
Per 600 PA
0
0
Zach Jackson
Careerverified
Per 600 PAverified
1
46.15
Jeremy Affeldt
Careerverified
Per 600 PAverified
2
63.16
Zach Jackson
Career
Per 600 PA
0
0
Jeremy Affeldt
Careerverified
Per 600 PAverified
2
63.16
Zach Jackson
Career
Per 600 PA
1
46.15
Jeremy Affeldt
Careerverified
Per 600 PAverified
0.98
30.85
Zach Jackson
Career
Per 600 PA
-0.1
-4.76
Jeremy Affeldt
Career
Per 600 PA
0
0
Zach Jackson
Career
Per 600 PA
0
0
Jeremy Affeldt
Careerverified
Per 600 PAverified
2
63.16
Zach Jackson
Career
Per 600 PA
0
0
Jeremy Affeldt
Career
Per 600 PA
0
0
Zach Jackson
Career
Per 600 PA
0
0
Jeremy Affeldt
Career
Per 600 PA
6
189.47
Zach Jackson
Careerverified
Per 600 PAverified
2
92.31
Jeremy Affeldt
Career
Per 600 PA
3.17
3.17
Zach Jackson
Careerverified
Per 600 PAverified
6.5
6.5
Jeremy Affeldt
Careerverified
Per 600 PAverified
0.33
0.33
Zach Jackson
Career
Per 600 PA
0
0
Jeremy Affeldt
Career
Per 600 PA
0
0
Zach Jackson
Careerverified
Per 600 PAverified
4
184.62
Jeremy Affeldt
Career
Per 600 PA
0
0
Zach Jackson
Career
Per 600 PA
0
0
Jeremy Affeldt
Career
Per 600 PA
0
0
Zach Jackson
Career
Per 600 PA
0
0
Jeremy Affeldt
Career
Per 600 PA
0
0
Zach Jackson
Career
Per 600 PA
0
0
Jeremy Affeldt
Career
Per 600 PA
0
0
Zach Jackson
Career
Per 600 PA
0
0
Jeremy Affeldt
Career
Per 600 PA
0
0
Zach Jackson
Career
Per 600 PA
0
0
Jeremy Affeldt
Career
Per 600 PA
Zach Jackson
Career
Per 600 PA