Jack Aker vs. Fernando Valenzuela — Career Comparison

Jack Aker
Silent GenerationCaliforniaThrows RightBats RightNorth AmericaKansas City AthleticsAmerican LeagueRelief Pitcher
Fernando Valenzuela
Baby BoomersMexicoThrows LeftBats LeftNorth AmericaLos Angeles DodgersNational LeagueStarting PitcherGold GloveCy Young AwardSilver SluggerRookie of the YearAll-Star

Fernando Valenzuela built a career as a starting pitcher and Jack Aker as a reliever — different jobs with different demands — but on the metrics that apply to both, a comparison is still worth making. Fernando Valenzuela led in home run suppression (HR9+ 110 vs 76), run prevention (ERA+ 95 vs 89), and skill-based run prevention (DICE+ 91 vs 88). Jack Aker held the edge in walk avoidance (BB%+ 100 vs 80). Keeping the role difference in mind, the edge still goes to Fernando Valenzuela.

Pitching Stats for Jack Aker and Fernando Valenzuela

Jack Aker
Career
Per 9 Innings
11
11
Fernando Valenzuela
Careerverified
Per 9 Inningsverified
17
17
Jack Aker
Careerverified
Per 9 Inningsverified
495
5.97
Fernando Valenzuela
Career
Per 9 Innings
453
1.39
Jack Aker
Career
Per 9 Innings
0
0
Fernando Valenzuela
Careerverified
Per 9 Inningsverified
424
1.3
Jack Aker
Career
Per 9 Inningsverified
47
0.57
Fernando Valenzuela
Careerverified
Per 9 Innings
173
0.53
Jack Aker
Careerverified
Per 9 Innings
45
0.54
Fernando Valenzuela
Career
Per 9 Inningsverified
153
0.47
Jack Aker
Career
Per 9 Innings
51.09
51.09
Fernando Valenzuela
Careerverified
Per 9 Inningsverified
53.07
53.07
Jack Aker
Career
Per 9 Innings
0
0
Fernando Valenzuela
Careerverified
Per 9 Inningsverified
93.6
93.6
Jack Aker
Career
Per 9 Innings
0
0
Fernando Valenzuela
Careerverified
Per 9 Inningsverified
113
0.35
Jack Aker
Career
Per 9 Innings
0
0
Fernando Valenzuela
Careerverified
Per 9 Inningsverified
31
0.1
Jack Aker
Careerverified
Per 9 Inningsverified
123
1.48
Fernando Valenzuela
Career
Per 9 Innings
2
0.01
Jack Aker
Careerverified
Per 9 Inningsverified
272
3.28
Fernando Valenzuela
Career
Per 9 Innings
1154
3.54
Jack Aker
Careerverified
Per 9 Inningsverified
3.28
3.28
Fernando Valenzuela
Career
Per 9 Innings
3.54
3.54
Jack Aker
Careerverified
Per 9 Inningsverified
3.45
3.45
Fernando Valenzuela
Career
Per 9 Innings
3.5
3.5
Jack Aker
Career
Per 9 Innings
4.29
4.29
Fernando Valenzuela
Careerverified
Per 9 Inningsverified
3.79
3.79
Jack Aker
Careerverified
Per 9 Inningsverified
0.244
0.244
Fernando Valenzuela
Career
Per 9 Innings
0.248
0.248
Jack Aker
Career
Per 9 Innings
2238
27
Fernando Valenzuela
Careerverified
Per 9 Innings
8790
27
Jack Aker
Career
Per 9 Innings
746
9
Fernando Valenzuela
Careerverified
Per 9 Innings
2930
9
Jack Aker
Careerverified
Per 9 Inningsverified
679
8.19
Fernando Valenzuela
Career
Per 9 Innings
2718
8.35
Jack Aker
Careerverified
Per 9 Inningsverified
8.19
8.19
Fernando Valenzuela
Career
Per 9 Innings
8.35
8.35
Jack Aker
Careerverified
Per 9 Innings
64
0.77
Fernando Valenzuela
Career
Per 9 Inningsverified
226
0.69
Jack Aker
Career
Per 9 Innings
0.77
0.77
Fernando Valenzuela
Careerverified
Per 9 Inningsverified
0.69
0.69
Jack Aker
Careerverified
Per 9 Inningsverified
0.13
0.13
Fernando Valenzuela
Career
Per 9 Innings
0.5
0.5
Jack Aker
Careerverified
Per 9 Inningsverified
274
3.31
Fernando Valenzuela
Career
Per 9 Innings
1151
3.54
Jack Aker
Career
Per 9 Innings
68
0.82
Fernando Valenzuela
Careerverified
Per 9 Inningsverified
65
0.2
Jack Aker
Careerverified
Per 9 Inningsverified
3.31
3.31
Fernando Valenzuela
Career
Per 9 Innings
3.54
3.54
Jack Aker
Career
Per 9 Innings
404
4.87
Fernando Valenzuela
Careerverified
Per 9 Inningsverified
2074
6.37
Jack Aker
Career
Per 9 Innings
4.87
4.87
Fernando Valenzuela
Careerverified
Per 9 Inningsverified
6.37
6.37
Jack Aker
Career
Per 9 Innings
0.82
0.82
Fernando Valenzuela
Careerverified
Per 9 Inningsverified
4.58
4.58
Jack Aker
Career
Per 9 Innings
0.909
0.909
Fernando Valenzuela
Careerverified
Per 9 Inningsverified
1.101
1.101
Jack Aker
Careerverified
Per 9 Inningsverified
13
0.16
Fernando Valenzuela
Career
Per 9 Innings
119
0.37
Jack Aker
Career
Per 9 Innings
40
0.48
Fernando Valenzuela
Careerverified
Per 9 Inningsverified
25
0.08
Jack Aker
Careerverified
Per 9 Inningsverified
0
0
Fernando Valenzuela
Career
Per 9 Innings
11
0.03
Jack Aker
Career
Per 9 Innings
3144
37.93
Fernando Valenzuela
Careerverified
Per 9 Inningsverified
12398
38.08
Jack Aker
Careerverified
Per 9 Inningsverified
321
3.87
Fernando Valenzuela
Career
Per 9 Innings
10
0.03
Jack Aker
Careerverified
Per 9 Inningsverified
312
3.76
Fernando Valenzuela
Career
Per 9 Innings
1303
4
Jack Aker
Careerverified
Per 9 Inningsverified
3.76
3.76
Fernando Valenzuela
Career
Per 9 Innings
4
4
Jack Aker
Careerverified
Per 9 Inningsverified
32
0.39
Fernando Valenzuela
Career
Per 9 Innings
182
0.56
Jack Aker
Careerverified
Per 9 Inningsverified
12
0.14
Fernando Valenzuela
Career
Per 9 Innings
69
0.21
Jack Aker
Career
Per 9 Innings
19
0.23
Fernando Valenzuela
Careerverified
Per 9 Inningsverified
209
0.64
Jack Aker
Careerverified
Per 9 Inningsverified
1.278
1.278
Fernando Valenzuela
Career
Per 9 Innings
1.321
1.321
Jack Aker
Career
Per 9 Innings
2786
33.61
Fernando Valenzuela
Careerverified
Per 9 Inningsverified
10971
33.7
Jack Aker
Careerverified
Per 9 Inningsverified
0.63
0.63
Fernando Valenzuela
Career
Per 9 Innings
2.88
2.88
Jack Aker
Careerverified
Per 9 Inningsverified
0.265
0.265
Fernando Valenzuela
Career
Per 9 Innings
0.287
0.287
Jack Aker
Career
Per 9 Innings
37.93
37.93
Fernando Valenzuela
Careerverified
Per 9 Inningsverified
38.08
38.08

Fielding Stats for Jack Aker and Fernando Valenzuela

Jack Aker
Career
Per 9 Innings
11
11
Fernando Valenzuela
Careerverified
Per 9 Inningsverified
17
17
Jack Aker
Careerverified
Per 9 Inningsverified
495
5.97
Fernando Valenzuela
Career
Per 9 Innings
455
1.4
Jack Aker
Career
Per 9 Innings
0
0
Fernando Valenzuela
Careerverified
Per 9 Inningsverified
424
1.3
Jack Aker
Career
Per 9 Innings
2240
27
Fernando Valenzuela
Careerverified
Per 9 Innings
8798
27
Jack Aker
Career
Per 9 Innings
746.2
9
Fernando Valenzuela
Careerverified
Per 9 Innings
2932.2
9
Jack Aker
Career
Per 9 Inningsverified
65
0.78
Fernando Valenzuela
Careerverified
Per 9 Innings
202
0.62
Jack Aker
Career
Per 9 Inningsverified
167
2.01
Fernando Valenzuela
Careerverified
Per 9 Innings
586
1.8
Jack Aker
Careerverified
Per 9 Innings
8
0.1
Fernando Valenzuela
Career
Per 9 Inningsverified
30
0.09
Jack Aker
Career
Per 9 Inningsverified
240
2.89
Fernando Valenzuela
Careerverified
Per 9 Innings
818
2.51
Jack Aker
Career
Per 9 Inningsverified
232
2.8
Fernando Valenzuela
Careerverified
Per 9 Innings
788
2.42
Jack Aker
Careerverified
Per 9 Inningsverified
96.67
96.67
Fernando Valenzuela
Career
Per 9 Innings
96.33
96.33
Jack Aker
Career
Per 9 Innings
0.469
0.469
Fernando Valenzuela
Careerverified
Per 9 Inningsverified
1.732
1.732
Jack Aker
Career
Per 9 Innings
0
0
Fernando Valenzuela
Careerverified
Per 9 Inningsverified
93.19
93.19
Jack Aker
Career
Per 9 Inningsverified
20
0.24
Fernando Valenzuela
Careerverified
Per 9 Innings
31
0.1
Jack Aker
Career
Per 9 Innings
0
0
Fernando Valenzuela
Career
Per 9 Innings
0
0
Jack Aker
Career
Per 9 Innings
0
0
Fernando Valenzuela
Career
Per 9 Innings
0
0
Jack Aker
Career
Per 9 Innings
0
0
Fernando Valenzuela
Career
Per 9 Innings
0
0
Jack Aker
Career
Per 9 Innings
0
0
Fernando Valenzuela
Career
Per 9 Innings
0
0

Hitting Stats for Jack Aker and Fernando Valenzuela

Jack Aker
Career
Per 600 PA
11
11
Fernando Valenzuela
Careerverified
Per 600 PAverified
17
17
Jack Aker
Careerverified
Per 600 PAverified
496
2861.54
Fernando Valenzuela
Career
Per 600 PA
474
272.67
Jack Aker
Career
Per 600 PA
104
600
Fernando Valenzuela
Careerverified
Per 600 PA
1043
600
Jack Aker
Career
Per 600 PA
92
530.77
Fernando Valenzuela
Careerverified
Per 600 PAverified
936
538.45
Jack Aker
Career
Per 600 PA
0.076
0.076
Fernando Valenzuela
Careerverified
Per 600 PAverified
0.2
0.2
Jack Aker
Career
Per 600 PA
0.279
0.279
Fernando Valenzuela
Careerverified
Per 600 PAverified
0.52
0.52
Jack Aker
Career
Per 600 PA
7
40.38
Fernando Valenzuela
Careerverified
Per 600 PAverified
187
107.57
Jack Aker
Career
Per 600 PA
5
28.85
Fernando Valenzuela
Careerverified
Per 600 PAverified
150
86.29
Jack Aker
Career
Per 600 PA
2
11.54
Fernando Valenzuela
Careerverified
Per 600 PAverified
26
14.96
Jack Aker
Career
Per 600 PA
0
0
Fernando Valenzuela
Careerverified
Per 600 PAverified
1
0.58
Jack Aker
Career
Per 600 PA
0
0
Fernando Valenzuela
Careerverified
Per 600 PAverified
10
5.75
Jack Aker
Career
Per 600 PA
2
11.54
Fernando Valenzuela
Careerverified
Per 600 PAverified
37
21.28
Jack Aker
Careerverified
Per 600 PAverified
0.286
0.286
Fernando Valenzuela
Career
Per 600 PA
0.198
0.198
Jack Aker
Career
Per 600 PA
0
0
Fernando Valenzuela
Careerverified
Per 600 PAverified
0.011
0.011
Jack Aker
Career
Per 600 PA
0
0
Fernando Valenzuela
Careerverified
Per 600 PAverified
0.054
0.054
Jack Aker
Career
Per 600 PA
0.81
4.66
Fernando Valenzuela
Careerverified
Per 600 PAverified
49.61
28.54
Jack Aker
Career
Per 600 PA
9
51.92
Fernando Valenzuela
Careerverified
Per 600 PAverified
245
140.94
Jack Aker
Career
Per 600 PA
9
51.92
Fernando Valenzuela
Careerverified
Per 600 PAverified
195
112.18
Jack Aker
Career
Per 600 PA
0.096
0.096
Fernando Valenzuela
Careerverified
Per 600 PAverified
0.205
0.205
Jack Aker
Career
Per 600 PA
0.098
0.098
Fernando Valenzuela
Careerverified
Per 600 PAverified
0.262
0.262
Jack Aker
Career
Per 600 PA
0.194
0.194
Fernando Valenzuela
Careerverified
Per 600 PAverified
0.467
0.467
Jack Aker
Career
Per 600 PA
0.022
0.022
Fernando Valenzuela
Careerverified
Per 600 PAverified
0.062
0.062
Jack Aker
Career
Per 600 PA
0.068
0.068
Fernando Valenzuela
Careerverified
Per 600 PAverified
0.158
0.158
Jack Aker
Career
Per 600 PA
0.128
0.128
Fernando Valenzuela
Careerverified
Per 600 PAverified
0.332
0.332
Jack Aker
Career
Per 600 PA
0.171
0.171
Fernando Valenzuela
Careerverified
Per 600 PAverified
0.225
0.225
Jack Aker
Career
Per 600 PA
3
17.31
Fernando Valenzuela
Careerverified
Per 600 PAverified
56
32.21
Jack Aker
Career
Per 600 PA
4
23.08
Fernando Valenzuela
Careerverified
Per 600 PAverified
84
48.32
Jack Aker
Career
Per 600 PA
7
40.38
Fernando Valenzuela
Careerverified
Per 600 PAverified
130
74.78
Jack Aker
Career
Per 600 PA
-4.13
-23.83
Fernando Valenzuela
Careerverified
Per 600 PAverified
46.68
26.85
Jack Aker
Careerverified
Per 600 PAverified
1
5.77
Fernando Valenzuela
Career
Per 600 PA
0
0
Jack Aker
Career
Per 600 PAverified
1
5.77
Fernando Valenzuela
Careerverified
Per 600 PA
8
4.6
Jack Aker
Career
Per 600 PA
0
0
Fernando Valenzuela
Career
Per 600 PA
0
0
Jack Aker
Careerverified
Per 600 PA
51
294.23
Fernando Valenzuela
Career
Per 600 PAverified
145
83.41
Jack Aker
Career
Per 600 PA
2.04
2.04
Fernando Valenzuela
Careerverified
Per 600 PAverified
7.19
7.19
Jack Aker
Career
Per 600 PA
0.02
0.02
Fernando Valenzuela
Careerverified
Per 600 PAverified
0.06
0.06
Jack Aker
Career
Per 600 PAverified
10
57.69
Fernando Valenzuela
Careerverified
Per 600 PA
93
53.5
Jack Aker
Career
Per 600 PA
0
0
Fernando Valenzuela
Careerverified
Per 600 PAverified
6
3.45
Jack Aker
Careerverified
Per 600 PAverified
1
5.77
Fernando Valenzuela
Career
Per 600 PA
12
6.9
Jack Aker
Career
Per 600 PA
0
0
Fernando Valenzuela
Career
Per 600 PA
0
0
Jack Aker
Career
Per 600 PA
0
0
Fernando Valenzuela
Careerverified
Per 600 PAverified
2
1.15
Jack Aker
Career
Per 600 PA
0
0
Fernando Valenzuela
Careerverified
Per 600 PAverified
2
1.15
Jack Aker
Career
Per 600 PA
Fernando Valenzuela
Career
Per 600 PA
0
0