Bill Kalfass vs. Jack O'Brien — Career Comparison

You might be looking for a matchup, check Bill Kalfass's matchup page instead!

Bill Kalfass
Greatest GenerationNew YorkThrows LeftBats RightNorth AmericaPhiladelphia AthleticsAmerican LeagueStarting Pitcher
Jack O'Brien
Pre-GenerationalPennsylvaniaThrows RightBats RightNorth AmericaPhiladelphia AthleticsAmerican AssociationCatcher

Jack O'Brien is a position player and Bill Kalfass a pitcher — the stats that define each role measure entirely different things, so a direct comparison doesn't hold up. If Jack O'Brien ever faced Bill Kalfass, check out their matchup page.

Fielding Stats for Bill Kalfass and Jack O'Brien

Bill Kalfass
Career
Per 9 Innings
1
Jack O'Brien
Careerverified
Per 9 Inningsverified
8
8
Bill Kalfass
Career
Per 9 Innings
3
Jack O'Brien
Careerverified
Per 9 Inningsverified
573
1.1
Bill Kalfass
Career
Per 9 Innings
0
Jack O'Brien
Career
Per 9 Innings
0
0
Bill Kalfass
Career
Per 9 Innings
0
Jack O'Brien
Careerverified
Per 9 Inningsverified
14076
27
Bill Kalfass
Career
Per 9 Innings
0
Jack O'Brien
Careerverified
Per 9 Inningsverified
4692
9
Bill Kalfass
Career
Per 9 Innings
0
Jack O'Brien
Careerverified
Per 9 Inningsverified
2908
5.58
Bill Kalfass
Career
Per 9 Innings
1
Jack O'Brien
Careerverified
Per 9 Inningsverified
619
1.19
Bill Kalfass
Careerverified
Per 9 Inningsverified
0
Jack O'Brien
Career
Per 9 Innings
311
0.6
Bill Kalfass
Career
Per 9 Innings
1
Jack O'Brien
Careerverified
Per 9 Inningsverified
3838
7.36
Bill Kalfass
Career
Per 9 Innings
1
Jack O'Brien
Careerverified
Per 9 Inningsverified
3527
6.77
Bill Kalfass
Careerverified
Per 9 Innings
100
Jack O'Brien
Career
Per 9 Inningsverified
91.9
91.9
Bill Kalfass
Career
Per 9 Innings
0.333
Jack O'Brien
Careerverified
Per 9 Inningsverified
6.155
6.155
Bill Kalfass
Career
Per 9 Innings
0
Jack O'Brien
Career
Per 9 Innings
0
0
Bill Kalfass
Career
Per 9 Innings
0
Jack O'Brien
Careerverified
Per 9 Inningsverified
128
0.25
Bill Kalfass
Careerverified
Per 9 Inningsverified
0
Jack O'Brien
Career
Per 9 Innings
279
0.54
Bill Kalfass
Career
Per 9 Innings
0
Jack O'Brien
Career
Per 9 Innings
0
0
Bill Kalfass
Careerverified
Per 9 Innings
0
Jack O'Brien
Career
Per 9 Innings
2
0
Bill Kalfass
Career
Per 9 Innings
0
Jack O'Brien
Careerverified
Per 9 Innings
2
0

Hitting Stats for Bill Kalfass and Jack O'Brien

Bill Kalfass
Career
Per 600 PA
1
1
Jack O'Brien
Careerverified
Per 600 PAverified
8
8
Bill Kalfass
Career
Per 600 PAverified
3
450
Jack O'Brien
Careerverified
Per 600 PA
555
139.92
Bill Kalfass
Career
Per 600 PA
4
600
Jack O'Brien
Careerverified
Per 600 PA
2380
600
Bill Kalfass
Career
Per 600 PAverified
4
600
Jack O'Brien
Careerverified
Per 600 PA
2169
546.81
Bill Kalfass
Career
Per 600 PA
0
0
Jack O'Brien
Careerverified
Per 600 PAverified
0.266
0.266
Bill Kalfass
Career
Per 600 PA
0
0
Jack O'Brien
Careerverified
Per 600 PAverified
0.736
0.736
Bill Kalfass
Career
Per 600 PA
0
0
Jack O'Brien
Careerverified
Per 600 PAverified
577
145.46
Bill Kalfass
Career
Per 600 PA
0
0
Jack O'Brien
Careerverified
Per 600 PAverified
418
105.38
Bill Kalfass
Career
Per 600 PA
0
0
Jack O'Brien
Careerverified
Per 600 PAverified
106
26.72
Bill Kalfass
Career
Per 600 PA
0
0
Jack O'Brien
Careerverified
Per 600 PAverified
42
10.59
Bill Kalfass
Career
Per 600 PA
0
0
Jack O'Brien
Careerverified
Per 600 PAverified
11
2.77
Bill Kalfass
Career
Per 600 PA
0
0
Jack O'Brien
Careerverified
Per 600 PAverified
159
40.08
Bill Kalfass
Career
Per 600 PA
Jack O'Brien
Careerverified
Per 600 PAverified
0.276
0.276
Bill Kalfass
Career
Per 600 PA
0
0
Jack O'Brien
Careerverified
Per 600 PAverified
0.005
0.005
Bill Kalfass
Career
Per 600 PA
Jack O'Brien
Careerverified
Per 600 PAverified
0.019
0.019
Bill Kalfass
Career
Per 600 PA
0
0
Jack O'Brien
Careerverified
Per 600 PAverified
294.26
74.18
Bill Kalfass
Career
Per 600 PA
0
0
Jack O'Brien
Careerverified
Per 600 PAverified
800
201.68
Bill Kalfass
Career
Per 600 PA
0
0
Jack O'Brien
Careerverified
Per 600 PAverified
788
198.66
Bill Kalfass
Career
Per 600 PA
0
0
Jack O'Brien
Careerverified
Per 600 PAverified
0.331
0.331
Bill Kalfass
Career
Per 600 PA
0
0
Jack O'Brien
Careerverified
Per 600 PAverified
0.369
0.369
Bill Kalfass
Career
Per 600 PA
0
0
Jack O'Brien
Careerverified
Per 600 PAverified
0.7
0.7
Bill Kalfass
Career
Per 600 PA
0
0
Jack O'Brien
Careerverified
Per 600 PAverified
0.103
0.103
Bill Kalfass
Career
Per 600 PA
0
0
Jack O'Brien
Careerverified
Per 600 PAverified
0.241
0.241
Bill Kalfass
Career
Per 600 PA
0
0
Jack O'Brien
Careerverified
Per 600 PAverified
0.683
0.683
Bill Kalfass
Career
Per 600 PA
0
0
Jack O'Brien
Careerverified
Per 600 PAverified
0.266
0.266
Bill Kalfass
Career
Per 600 PA
0
0
Jack O'Brien
Careerverified
Per 600 PAverified
366
92.27
Bill Kalfass
Career
Per 600 PA
0
0
Jack O'Brien
Careerverified
Per 600 PAverified
308
77.65
Bill Kalfass
Career
Per 600 PA
0
0
Jack O'Brien
Careerverified
Per 600 PAverified
663
167.14
Bill Kalfass
Career
Per 600 PA
-0.42
-63.2
Jack O'Brien
Careerverified
Per 600 PAverified
318.06
80.18
Bill Kalfass
Career
Per 600 PA
0
0
Jack O'Brien
Careerverified
Per 600 PAverified
31
7.82
Bill Kalfass
Career
Per 600 PA
0
0
Jack O'Brien
Careerverified
Per 600 PAverified
180
45.38
Bill Kalfass
Career
Per 600 PA
0
0
Jack O'Brien
Career
Per 600 PA
0
0
Bill Kalfass
Careerverified
Per 600 PA
2
300
Jack O'Brien
Career
Per 600 PAverified
31
7.82
Bill Kalfass
Career
Per 600 PA
2
2
Jack O'Brien
Careerverified
Per 600 PAverified
76.77
76.77
Bill Kalfass
Career
Per 600 PA
0
0
Jack O'Brien
Careerverified
Per 600 PAverified
5.81
5.81
Bill Kalfass
Career
Per 600 PA
0
0
Jack O'Brien
Career
Per 600 PA
0
0
Bill Kalfass
Career
Per 600 PA
0
0
Jack O'Brien
Career
Per 600 PA
0
0
Bill Kalfass
Career
Per 600 PA
0
0
Jack O'Brien
Career
Per 600 PA
0
0
Bill Kalfass
Career
Per 600 PA
0
0
Jack O'Brien
Careerverified
Per 600 PAverified
76
19.16
Bill Kalfass
Career
Per 600 PA
0
0
Jack O'Brien
Career
Per 600 PA
0
0
Bill Kalfass
Career
Per 600 PA
0
0
Jack O'Brien
Careerverified
Per 600 PAverified
76
19.16
Bill Kalfass
Career
Per 600 PA
Jack O'Brien
Careerverified
Per 600 PAverified
100
100