Jakob Junis vs. Jack Mercer — Career Comparison

MillenialArkansasThrows RightBats RightNorth AmericaCleveland GuardiansAmerican LeagueStarting Pitcher
Lost GenerationOhioThrows RightNorth AmericaPittsburgh PiratesNational LeagueRelief Pitcher

Jakob Junis built a career as a starting pitcher and Jack Mercer as a reliever — different jobs with different demands — but on the metrics that apply to both, a comparison is still worth making. Jack Mercer posted stronger surface numbers — ERA 0 and WHIP 2.000 compared to 4.36 and 1.298 for Jakob Junis. By the career numbers, Jack Mercer had the better of this cross-role comparison — though era context would sharpen the verdict.

Pitching Stats for Jakob Junis and Jack Mercer

Jakob Junis
Careerverified
Per 9 Inningsverified
9
9
Jack Mercer
Career
Per 9 Innings
1
1
Jakob Junis
Careerverified
Per 9 Innings
249
2.65
Jack Mercer
Career
Per 9 Inningsverified
1
9
Jakob Junis
Careerverified
Per 9 Inningsverified
116
1.23
Jack Mercer
Career
Per 9 Innings
0
0
Jakob Junis
Careerverified
Per 9 Inningsverified
46
0.49
Jack Mercer
Career
Per 9 Innings
0
0
Jakob Junis
Career
Per 9 Innings
46
0.49
Jack Mercer
Careerverified
Per 9 Inningsverified
0
0
Jakob Junis
Careerverified
Per 9 Inningsverified
50
50
Jack Mercer
Career
Per 9 Innings
Jakob Junis
Careerverified
Per 9 Inningsverified
46.59
46.59
Jack Mercer
Career
Per 9 Innings
0
0
Jakob Junis
Careerverified
Per 9 Inningsverified
1
0.01
Jack Mercer
Career
Per 9 Innings
0
0
Jakob Junis
Career
Per 9 Innings
0
0
Jack Mercer
Career
Per 9 Innings
0
0
Jakob Junis
Careerverified
Per 9 Inningsverified
2
0.02
Jack Mercer
Career
Per 9 Innings
0
0
Jakob Junis
Career
Per 9 Innings
410
4.36
Jack Mercer
Careerverified
Per 9 Inningsverified
0
0
Jakob Junis
Career
Per 9 Innings
4.36
4.36
Jack Mercer
Careerverified
Per 9 Inningsverified
0
0
Jakob Junis
Careerverified
Per 9 Inningsverified
4.31
4.31
Jack Mercer
Career
Per 9 Innings
4.48
4.48
Jakob Junis
Careerverified
Per 9 Inningsverified
4.13
4.13
Jack Mercer
Career
Per 9 Innings
7
7
Jakob Junis
Career
Per 9 Innings
0.266
0.266
Jack Mercer
Careerverified
Per 9 Inningsverified
0
0
Jakob Junis
Careerverified
Per 9 Innings
2541
27
Jack Mercer
Career
Per 9 Innings
3
27
Jakob Junis
Careerverified
Per 9 Innings
847
9
Jack Mercer
Career
Per 9 Innings
1
9
Jakob Junis
Career
Per 9 Innings
876
9.31
Jack Mercer
Careerverified
Per 9 Inningsverified
0
0
Jakob Junis
Career
Per 9 Innings
9.31
9.31
Jack Mercer
Careerverified
Per 9 Inningsverified
0
0
Jakob Junis
Career
Per 9 Innings
130
1.38
Jack Mercer
Careerverified
Per 9 Inningsverified
0
0
Jakob Junis
Career
Per 9 Innings
1.38
1.38
Jack Mercer
Careerverified
Per 9 Inningsverified
0
0
Jakob Junis
Career
Per 9 Innings
0.52
0.52
Jack Mercer
Careerverified
Per 9 Inningsverified
0
0
Jakob Junis
Career
Per 9 Inningsverified
216
2.3
Jack Mercer
Careerverified
Per 9 Innings
2
18
Jakob Junis
Career
Per 9 Innings
7
0.07
Jack Mercer
Careerverified
Per 9 Inningsverified
0
0
Jakob Junis
Careerverified
Per 9 Inningsverified
2.3
2.3
Jack Mercer
Career
Per 9 Innings
18
18
Jakob Junis
Careerverified
Per 9 Innings
768
8.16
Jack Mercer
Career
Per 9 Inningsverified
1
9
Jakob Junis
Career
Per 9 Innings
8.16
8.16
Jack Mercer
Careerverified
Per 9 Inningsverified
9
9
Jakob Junis
Careerverified
Per 9 Inningsverified
3.08
3.08
Jack Mercer
Career
Per 9 Innings
1
1
Jakob Junis
Career
Per 9 Innings
1.162
1.162
Jack Mercer
Careerverified
Per 9 Inningsverified
3
3
Jakob Junis
Career
Per 9 Innings
27
0.29
Jack Mercer
Careerverified
Per 9 Inningsverified
0
0
Jakob Junis
Career
Per 9 Innings
53
0.56
Jack Mercer
Careerverified
Per 9 Inningsverified
0
0
Jakob Junis
Career
Per 9 Innings
2
0.02
Jack Mercer
Careerverified
Per 9 Inningsverified
0
0
Jakob Junis
Careerverified
Per 9 Inningsverified
3605
38.31
Jack Mercer
Career
Per 9 Innings
4
36
Jakob Junis
Careerverified
Per 9 Innings
21
0.22
Jack Mercer
Career
Per 9 Inningsverified
1
9
Jakob Junis
Career
Per 9 Innings
441
4.69
Jack Mercer
Careerverified
Per 9 Inningsverified
0
0
Jakob Junis
Career
Per 9 Innings
4.69
4.69
Jack Mercer
Careerverified
Per 9 Inningsverified
0
0
Jakob Junis
Career
Per 9 Innings
10
0.11
Jack Mercer
Careerverified
Per 9 Inningsverified
0
0
Jakob Junis
Career
Per 9 Innings
27
0.29
Jack Mercer
Careerverified
Per 9 Inningsverified
0
0
Jakob Junis
Careerverified
Per 9 Inningsverified
59
0.63
Jack Mercer
Career
Per 9 Innings
0
0
Jakob Junis
Careerverified
Per 9 Inningsverified
1.289
1.289
Jack Mercer
Career
Per 9 Innings
2
2
Jakob Junis
Careerverified
Per 9 Inningsverified
3299
35.05
Jack Mercer
Career
Per 9 Innings
2
18
Jakob Junis
Career
Per 9 Innings
1.77
1.77
Jack Mercer
Careerverified
Per 9 Inningsverified
0
0
Jakob Junis
Career
Per 9 Innings
0.311
0.311
Jack Mercer
Careerverified
Per 9 Inningsverified
0
0
Jakob Junis
Careerverified
Per 9 Inningsverified
38.31
38.31
Jack Mercer
Career
Per 9 Innings
36
36

Fielding Stats for Jakob Junis and Jack Mercer

Jakob Junis
Careerverified
Per 9 Inningsverified
9
9
Jack Mercer
Career
Per 9 Innings
1
1
Jakob Junis
Careerverified
Per 9 Innings
249
2.65
Jack Mercer
Career
Per 9 Inningsverified
1
9
Jakob Junis
Careerverified
Per 9 Inningsverified
116
1.23
Jack Mercer
Career
Per 9 Innings
0
0
Jakob Junis
Careerverified
Per 9 Innings
2541
27
Jack Mercer
Career
Per 9 Innings
3
27
Jakob Junis
Careerverified
Per 9 Innings
847
9
Jack Mercer
Career
Per 9 Innings
1
9
Jakob Junis
Careerverified
Per 9 Inningsverified
43
0.46
Jack Mercer
Career
Per 9 Innings
0
0
Jakob Junis
Careerverified
Per 9 Inningsverified
62
0.66
Jack Mercer
Career
Per 9 Innings
0
0
Jakob Junis
Career
Per 9 Innings
5
0.05
Jack Mercer
Careerverified
Per 9 Inningsverified
0
0
Jakob Junis
Careerverified
Per 9 Inningsverified
110
1.17
Jack Mercer
Career
Per 9 Innings
0
0
Jakob Junis
Careerverified
Per 9 Inningsverified
105
1.12
Jack Mercer
Career
Per 9 Innings
0
0
Jakob Junis
Careerverified
Per 9 Inningsverified
95.45
95.45
Jack Mercer
Career
Per 9 Innings
Jakob Junis
Careerverified
Per 9 Inningsverified
0.422
0.422
Jack Mercer
Career
Per 9 Innings
0
0
Jakob Junis
Careerverified
Per 9 Inningsverified
46.59
46.59
Jack Mercer
Career
Per 9 Innings
0
0
Jakob Junis
Careerverified
Per 9 Inningsverified
7
0.07
Jack Mercer
Career
Per 9 Innings
0
0
Jakob Junis
Career
Per 9 Innings
0
0
Jack Mercer
Career
Per 9 Innings
0
0
Jakob Junis
Career
Per 9 Innings
0
0
Jack Mercer
Career
Per 9 Innings
0
0
Jakob Junis
Career
Per 9 Innings
0
0
Jack Mercer
Career
Per 9 Innings
0
0
Jakob Junis
Career
Per 9 Innings
0
0
Jack Mercer
Career
Per 9 Innings
0
0

Hitting Stats for Jakob Junis and Jack Mercer

Jakob Junis
Careerverified
Per 600 PAverified
9
9
Jack Mercer
Career
Per 600 PA
1
Jakob Junis
Careerverified
Per 600 PAverified
249
16600
Jack Mercer
Career
Per 600 PA
1
Jakob Junis
Careerverified
Per 600 PAverified
9
600
Jack Mercer
Career
Per 600 PA
0
Jakob Junis
Careerverified
Per 600 PAverified
8
533.33
Jack Mercer
Career
Per 600 PA
0
Jakob Junis
Career
Per 600 PA
0
0
Jack Mercer
Career
Per 600 PA
Jakob Junis
Careerverified
Per 600 PAverified
0.111
0.111
Jack Mercer
Career
Per 600 PA
Jakob Junis
Career
Per 600 PA
0
0
Jack Mercer
Career
Per 600 PA
0
Jakob Junis
Career
Per 600 PA
0
0
Jack Mercer
Career
Per 600 PA
0
Jakob Junis
Career
Per 600 PA
0
0
Jack Mercer
Career
Per 600 PA
0
Jakob Junis
Career
Per 600 PA
0
0
Jack Mercer
Career
Per 600 PA
0
Jakob Junis
Career
Per 600 PA
0
0
Jack Mercer
Career
Per 600 PA
0
Jakob Junis
Career
Per 600 PA
0
0
Jack Mercer
Career
Per 600 PA
0
Jakob Junis
Career
Per 600 PA
Jack Mercer
Career
Per 600 PA
Jakob Junis
Career
Per 600 PA
0
0
Jack Mercer
Career
Per 600 PA
Jakob Junis
Career
Per 600 PA
Jack Mercer
Career
Per 600 PA
Jakob Junis
Career
Per 600 PA
0
0
Jack Mercer
Career
Per 600 PA
Jakob Junis
Career
Per 600 PA
0
0
Jack Mercer
Career
Per 600 PA
0
Jakob Junis
Career
Per 600 PA
0
0
Jack Mercer
Career
Per 600 PA
0
Jakob Junis
Career
Per 600 PA
0
0
Jack Mercer
Career
Per 600 PA
Jakob Junis
Career
Per 600 PA
0
0
Jack Mercer
Career
Per 600 PA
Jakob Junis
Career
Per 600 PA
0
0
Jack Mercer
Career
Per 600 PA
Jakob Junis
Career
Per 600 PA
0
0
Jack Mercer
Career
Per 600 PA
Jakob Junis
Career
Per 600 PA
0
0
Jack Mercer
Career
Per 600 PA
Jakob Junis
Career
Per 600 PA
0
0
Jack Mercer
Career
Per 600 PA
Jakob Junis
Career
Per 600 PA
0
0
Jack Mercer
Career
Per 600 PA
Jakob Junis
Career
Per 600 PA
0
0
Jack Mercer
Career
Per 600 PA
0
Jakob Junis
Career
Per 600 PA
0
0
Jack Mercer
Career
Per 600 PA
0
Jakob Junis
Career
Per 600 PA
0
0
Jack Mercer
Career
Per 600 PA
0
Jakob Junis
Careerverified
Per 600 PAverified
-0.82
-54.81
Jack Mercer
Career
Per 600 PA
Jakob Junis
Career
Per 600 PA
0
0
Jack Mercer
Career
Per 600 PA
0
Jakob Junis
Career
Per 600 PA
0
0
Jack Mercer
Career
Per 600 PA
0
Jakob Junis
Career
Per 600 PA
0
0
Jack Mercer
Career
Per 600 PA
0
Jakob Junis
Career
Per 600 PA
5
333.33
Jack Mercer
Careerverified
Per 600 PAverified
0
Jakob Junis
Careerverified
Per 600 PAverified
1.8
1.8
Jack Mercer
Career
Per 600 PA
Jakob Junis
Career
Per 600 PA
0
0
Jack Mercer
Career
Per 600 PA
Jakob Junis
Careerverified
Per 600 PAverified
1
66.67
Jack Mercer
Career
Per 600 PA
0
Jakob Junis
Career
Per 600 PA
0
0
Jack Mercer
Career
Per 600 PA
0
Jakob Junis
Career
Per 600 PA
0
0
Jack Mercer
Career
Per 600 PA
0
Jakob Junis
Career
Per 600 PA
0
0
Jack Mercer
Career
Per 600 PA
0
Jakob Junis
Career
Per 600 PA
0
0
Jack Mercer
Career
Per 600 PA
0
Jakob Junis
Career
Per 600 PA
0
0
Jack Mercer
Career
Per 600 PA
0
Jakob Junis
Career
Per 600 PA
Jack Mercer
Career
Per 600 PA