Casey Janssen vs. Mark Williamson — Career Comparison

Casey Janssen
MillenialCaliforniaThrows RightBats RightNorth AmericaToronto Blue JaysAmerican LeagueRelief Pitcher
Mark Williamson
Baby BoomersTexasThrows RightBats RightNorth AmericaBaltimore OriolesAmerican LeagueRelief Pitcher

The numbers give Mark Williamson a clear advantage over Casey Janssen across the core pitching metrics. Mark Williamson led in run prevention (ERA+ 113 vs 87), strikeout rate (K%+ 88 vs 76), and home run suppression (HR9+ 94 vs 85). Casey Janssen held the edge in walk avoidance (BB%+ 171 vs 126). Mark Williamson was the better reliever — the numbers make that case clearly.

Pitching Stats for Casey Janssen and Mark Williamson

Casey Janssen
Careerverified
Per 9 Inningsverified
9
9
Mark Williamson
Career
Per 9 Innings
8
8
Casey Janssen
Careerverified
Per 9 Inningsverified
437
7.38
Mark Williamson
Career
Per 9 Innings
365
4.76
Casey Janssen
Careerverified
Per 9 Inningsverified
22
0.37
Mark Williamson
Career
Per 9 Innings
15
0.2
Casey Janssen
Career
Per 9 Innings
31
0.52
Mark Williamson
Careerverified
Per 9 Inningsverified
46
0.6
Casey Janssen
Careerverified
Per 9 Innings
29
0.49
Mark Williamson
Career
Per 9 Inningsverified
35
0.46
Casey Janssen
Career
Per 9 Innings
51.67
51.67
Mark Williamson
Careerverified
Per 9 Inningsverified
56.79
56.79
Casey Janssen
Careerverified
Per 9 Inningsverified
5.03
5.03
Mark Williamson
Career
Per 9 Innings
4.11
4.11
Casey Janssen
Career
Per 9 Innings
0
0
Mark Williamson
Careerverified
Per 9 Inningsverified
2
0.03
Casey Janssen
Career
Per 9 Innings
0
0
Mark Williamson
Career
Per 9 Innings
0
0
Casey Janssen
Careerverified
Per 9 Inningsverified
90
1.52
Mark Williamson
Career
Per 9 Innings
21
0.27
Casey Janssen
Careerverified
Per 9 Inningsverified
215
3.63
Mark Williamson
Career
Per 9 Innings
296
3.86
Casey Janssen
Careerverified
Per 9 Inningsverified
3.63
3.63
Mark Williamson
Career
Per 9 Innings
3.86
3.86
Casey Janssen
Careerverified
Per 9 Inningsverified
3.44
3.44
Mark Williamson
Career
Per 9 Innings
3.77
3.77
Casey Janssen
Careerverified
Per 9 Inningsverified
3.65
3.65
Mark Williamson
Career
Per 9 Innings
4.04
4.04
Casey Janssen
Careerverified
Per 9 Inningsverified
0.253
0.253
Mark Williamson
Career
Per 9 Innings
0.266
0.266
Casey Janssen
Career
Per 9 Innings
1599
27
Mark Williamson
Careerverified
Per 9 Innings
2069
27
Casey Janssen
Career
Per 9 Innings
533
9
Mark Williamson
Careerverified
Per 9 Innings
689.2
9
Casey Janssen
Careerverified
Per 9 Inningsverified
518
8.75
Mark Williamson
Career
Per 9 Innings
701
9.15
Casey Janssen
Careerverified
Per 9 Inningsverified
8.75
8.75
Mark Williamson
Career
Per 9 Innings
9.15
9.15
Casey Janssen
Careerverified
Per 9 Innings
52
0.88
Mark Williamson
Career
Per 9 Inningsverified
62
0.81
Casey Janssen
Career
Per 9 Innings
0.88
0.88
Mark Williamson
Careerverified
Per 9 Inningsverified
0.81
0.81
Casey Janssen
Careerverified
Per 9 Inningsverified
0.12
0.12
Mark Williamson
Career
Per 9 Innings
0.17
0.17
Casey Janssen
Careerverified
Per 9 Inningsverified
129
2.18
Mark Williamson
Career
Per 9 Innings
226
2.95
Casey Janssen
Careerverified
Per 9 Inningsverified
13
0.22
Mark Williamson
Career
Per 9 Innings
51
0.67
Casey Janssen
Careerverified
Per 9 Inningsverified
2.18
2.18
Mark Williamson
Career
Per 9 Innings
2.95
2.95
Casey Janssen
Career
Per 9 Inningsverified
395
6.67
Mark Williamson
Careerverified
Per 9 Innings
397
5.18
Casey Janssen
Careerverified
Per 9 Inningsverified
6.67
6.67
Mark Williamson
Career
Per 9 Innings
5.18
5.18
Casey Janssen
Career
Per 9 Innings
0.9
0.9
Mark Williamson
Careerverified
Per 9 Inningsverified
1.09
1.09
Casey Janssen
Careerverified
Per 9 Inningsverified
0.983
0.983
Mark Williamson
Career
Per 9 Innings
0.903
0.903
Casey Janssen
Careerverified
Per 9 Innings
16
0.27
Mark Williamson
Career
Per 9 Inningsverified
19
0.25
Casey Janssen
Career
Per 9 Innings
25
0.42
Mark Williamson
Careerverified
Per 9 Inningsverified
9
0.12
Casey Janssen
Career
Per 9 Innings
3
0.05
Mark Williamson
Career
Per 9 Inningsverified
3
0.04
Casey Janssen
Career
Per 9 Innings
2227
37.6
Mark Williamson
Careerverified
Per 9 Inningsverified
2927
38.2
Casey Janssen
Careerverified
Per 9 Inningsverified
199
3.36
Mark Williamson
Career
Per 9 Innings
142
1.85
Casey Janssen
Careerverified
Per 9 Inningsverified
231
3.9
Mark Williamson
Career
Per 9 Innings
321
4.19
Casey Janssen
Careerverified
Per 9 Inningsverified
3.9
3.9
Mark Williamson
Career
Per 9 Innings
4.19
4.19
Casey Janssen
Careerverified
Per 9 Inningsverified
11
0.19
Mark Williamson
Career
Per 9 Innings
30
0.39
Casey Janssen
Careerverified
Per 9 Inningsverified
13
0.22
Mark Williamson
Career
Per 9 Innings
28
0.37
Casey Janssen
Career
Per 9 Innings
40
0.68
Mark Williamson
Careerverified
Per 9 Inningsverified
69
0.9
Casey Janssen
Careerverified
Per 9 Inningsverified
1.214
1.214
Mark Williamson
Career
Per 9 Innings
1.344
1.344
Casey Janssen
Career
Per 9 Inningsverified
2049
34.6
Mark Williamson
Careerverified
Per 9 Innings
2634
34.37
Casey Janssen
Careerverified
Per 9 Inningsverified
0.53
0.53
Mark Williamson
Career
Per 9 Innings
0.88
0.88
Casey Janssen
Careerverified
Per 9 Inningsverified
0.291
0.291
Mark Williamson
Career
Per 9 Innings
0.294
0.294
Casey Janssen
Career
Per 9 Innings
37.6
37.6
Mark Williamson
Careerverified
Per 9 Inningsverified
38.2
38.2

Fielding Stats for Casey Janssen and Mark Williamson

Casey Janssen
Careerverified
Per 9 Inningsverified
9
9
Mark Williamson
Career
Per 9 Innings
8
8
Casey Janssen
Careerverified
Per 9 Inningsverified
437
7.38
Mark Williamson
Career
Per 9 Innings
365
4.76
Casey Janssen
Careerverified
Per 9 Inningsverified
22
0.37
Mark Williamson
Career
Per 9 Innings
15
0.2
Casey Janssen
Career
Per 9 Innings
1599
27
Mark Williamson
Careerverified
Per 9 Innings
2069
27
Casey Janssen
Career
Per 9 Innings
533
9
Mark Williamson
Careerverified
Per 9 Innings
689.2
9
Casey Janssen
Career
Per 9 Innings
52
0.88
Mark Williamson
Careerverified
Per 9 Inningsverified
75
0.98
Casey Janssen
Career
Per 9 Inningsverified
64
1.08
Mark Williamson
Careerverified
Per 9 Innings
76
0.99
Casey Janssen
Careerverified
Per 9 Innings
6
0.1
Mark Williamson
Career
Per 9 Inningsverified
7
0.09
Casey Janssen
Career
Per 9 Innings
122
2.06
Mark Williamson
Careerverified
Per 9 Innings
158
2.06
Casey Janssen
Career
Per 9 Innings
116
1.96
Mark Williamson
Careerverified
Per 9 Inningsverified
151
1.97
Casey Janssen
Career
Per 9 Innings
95.08
95.08
Mark Williamson
Careerverified
Per 9 Inningsverified
95.57
95.57
Casey Janssen
Career
Per 9 Innings
0.265
0.265
Mark Williamson
Careerverified
Per 9 Inningsverified
0.414
0.414
Casey Janssen
Careerverified
Per 9 Inningsverified
5.03
5.03
Mark Williamson
Career
Per 9 Innings
4.11
4.11
Casey Janssen
Career
Per 9 Innings
2
0.03
Mark Williamson
Careerverified
Per 9 Inningsverified
4
0.05
Casey Janssen
Career
Per 9 Innings
0
0
Mark Williamson
Career
Per 9 Innings
0
0
Casey Janssen
Career
Per 9 Innings
0
0
Mark Williamson
Career
Per 9 Innings
0
0
Casey Janssen
Career
Per 9 Innings
0
0
Mark Williamson
Career
Per 9 Innings
0
0
Casey Janssen
Career
Per 9 Innings
0
0
Mark Williamson
Career
Per 9 Innings
0
0

Hitting Stats for Casey Janssen and Mark Williamson

Casey Janssen
Careerverified
Per 600 PAverified
9
9
Mark Williamson
Career
Per 600 PA
8
Casey Janssen
Careerverified
Per 600 PAverified
437
65550
Mark Williamson
Career
Per 600 PA
365
Casey Janssen
Careerverified
Per 600 PAverified
4
600
Mark Williamson
Career
Per 600 PA
0
Casey Janssen
Careerverified
Per 600 PAverified
3
450
Mark Williamson
Career
Per 600 PA
0
Casey Janssen
Career
Per 600 PA
0
0
Mark Williamson
Career
Per 600 PA
Casey Janssen
Careerverified
Per 600 PAverified
0.25
0.25
Mark Williamson
Career
Per 600 PA
Casey Janssen
Career
Per 600 PA
0
0
Mark Williamson
Career
Per 600 PA
0
Casey Janssen
Career
Per 600 PA
0
0
Mark Williamson
Career
Per 600 PA
0
Casey Janssen
Career
Per 600 PA
0
0
Mark Williamson
Career
Per 600 PA
0
Casey Janssen
Career
Per 600 PA
0
0
Mark Williamson
Career
Per 600 PA
0
Casey Janssen
Career
Per 600 PA
0
0
Mark Williamson
Career
Per 600 PA
0
Casey Janssen
Career
Per 600 PA
0
0
Mark Williamson
Career
Per 600 PA
0
Casey Janssen
Career
Per 600 PA
Mark Williamson
Career
Per 600 PA
Casey Janssen
Career
Per 600 PA
0
0
Mark Williamson
Career
Per 600 PA
Casey Janssen
Career
Per 600 PA
Mark Williamson
Career
Per 600 PA
Casey Janssen
Career
Per 600 PA
0
0
Mark Williamson
Career
Per 600 PA
Casey Janssen
Career
Per 600 PA
0
0
Mark Williamson
Career
Per 600 PA
0
Casey Janssen
Career
Per 600 PA
0
0
Mark Williamson
Career
Per 600 PA
0
Casey Janssen
Career
Per 600 PA
0
0
Mark Williamson
Career
Per 600 PA
Casey Janssen
Career
Per 600 PA
0
0
Mark Williamson
Career
Per 600 PA
Casey Janssen
Career
Per 600 PA
0
0
Mark Williamson
Career
Per 600 PA
Casey Janssen
Career
Per 600 PA
0
0
Mark Williamson
Career
Per 600 PA
Casey Janssen
Career
Per 600 PA
0
0
Mark Williamson
Career
Per 600 PA
Casey Janssen
Career
Per 600 PA
0
0
Mark Williamson
Career
Per 600 PA
Casey Janssen
Career
Per 600 PA
0
0
Mark Williamson
Career
Per 600 PA
Casey Janssen
Career
Per 600 PA
0
0
Mark Williamson
Career
Per 600 PA
0
Casey Janssen
Career
Per 600 PA
0
0
Mark Williamson
Career
Per 600 PA
0
Casey Janssen
Career
Per 600 PA
0
0
Mark Williamson
Career
Per 600 PA
0
Casey Janssen
Careerverified
Per 600 PAverified
-0.29
-43.52
Mark Williamson
Career
Per 600 PA
Casey Janssen
Career
Per 600 PA
0
0
Mark Williamson
Career
Per 600 PA
0
Casey Janssen
Career
Per 600 PA
0
0
Mark Williamson
Career
Per 600 PA
0
Casey Janssen
Career
Per 600 PA
0
0
Mark Williamson
Career
Per 600 PA
0
Casey Janssen
Career
Per 600 PA
2
300
Mark Williamson
Careerverified
Per 600 PAverified
0
Casey Janssen
Careerverified
Per 600 PAverified
2
2
Mark Williamson
Career
Per 600 PA
Casey Janssen
Career
Per 600 PA
0
0
Mark Williamson
Career
Per 600 PA
Casey Janssen
Careerverified
Per 600 PAverified
1
150
Mark Williamson
Career
Per 600 PA
0
Casey Janssen
Career
Per 600 PA
0
0
Mark Williamson
Career
Per 600 PA
0
Casey Janssen
Career
Per 600 PA
0
0
Mark Williamson
Career
Per 600 PA
0
Casey Janssen
Career
Per 600 PA
0
0
Mark Williamson
Career
Per 600 PA
0
Casey Janssen
Career
Per 600 PA
0
0
Mark Williamson
Career
Per 600 PA
0
Casey Janssen
Career
Per 600 PA
0
0
Mark Williamson
Career
Per 600 PA
0
Casey Janssen
Career
Per 600 PA
Mark Williamson
Career
Per 600 PA