Robert Armstrong vs. Jack O'Brien — Career Comparison

Robert Armstrong
Pre-GenerationalMarylandNorth AmericaFort Wayne KekiongasUnknownCenter Fielder
Jack O'Brien
Pre-GenerationalPennsylvaniaThrows RightBats RightNorth AmericaPhiladelphia AthleticsAmerican AssociationCatcher

On the career numbers, Jack O'Brien posted the stronger offensive profile against Robert Armstrong. Jack O'Brien posted stronger numbers in OPS (.700 vs .531) and on-base percentage (.331 vs .224). By the career numbers, Jack O'Brien had the stronger overall case — though those totals don't account for the eras and run environments each player worked in.

Hitting Stats for Robert Armstrong and Jack O'Brien

Robert Armstrong
Career
Per 600 PA
1
1
Jack O'Brien
Careerverified
Per 600 PAverified
8
8
Robert Armstrong
Career
Per 600 PAverified
12
146.94
Jack O'Brien
Careerverified
Per 600 PA
555
139.92
Robert Armstrong
Career
Per 600 PA
49
600
Jack O'Brien
Careerverified
Per 600 PA
2380
600
Robert Armstrong
Career
Per 600 PAverified
49
600
Jack O'Brien
Careerverified
Per 600 PA
2169
546.81
Robert Armstrong
Career
Per 600 PA
0.225
0.225
Jack O'Brien
Careerverified
Per 600 PAverified
0.266
0.266
Robert Armstrong
Career
Per 600 PA
0.52
0.52
Jack O'Brien
Careerverified
Per 600 PAverified
0.736
0.736
Robert Armstrong
Career
Per 600 PA
11
134.69
Jack O'Brien
Careerverified
Per 600 PAverified
577
145.46
Robert Armstrong
Career
Per 600 PA
8
97.96
Jack O'Brien
Careerverified
Per 600 PAverified
418
105.38
Robert Armstrong
Career
Per 600 PA
2
24.49
Jack O'Brien
Careerverified
Per 600 PAverified
106
26.72
Robert Armstrong
Career
Per 600 PAverified
1
12.24
Jack O'Brien
Careerverified
Per 600 PA
42
10.59
Robert Armstrong
Career
Per 600 PA
0
0
Jack O'Brien
Careerverified
Per 600 PAverified
11
2.77
Robert Armstrong
Career
Per 600 PA
3
36.73
Jack O'Brien
Careerverified
Per 600 PAverified
159
40.08
Robert Armstrong
Career
Per 600 PA
0.273
0.273
Jack O'Brien
Careerverified
Per 600 PAverified
0.276
0.276
Robert Armstrong
Career
Per 600 PA
0
0
Jack O'Brien
Careerverified
Per 600 PAverified
0.005
0.005
Robert Armstrong
Career
Per 600 PA
0
0
Jack O'Brien
Careerverified
Per 600 PAverified
0.019
0.019
Robert Armstrong
Career
Per 600 PA
3.03
37.14
Jack O'Brien
Careerverified
Per 600 PAverified
294.26
74.18
Robert Armstrong
Career
Per 600 PA
15
183.67
Jack O'Brien
Careerverified
Per 600 PAverified
800
201.68
Robert Armstrong
Career
Per 600 PA
11
134.69
Jack O'Brien
Careerverified
Per 600 PAverified
788
198.66
Robert Armstrong
Career
Per 600 PA
0.225
0.225
Jack O'Brien
Careerverified
Per 600 PAverified
0.331
0.331
Robert Armstrong
Career
Per 600 PA
0.306
0.306
Jack O'Brien
Careerverified
Per 600 PAverified
0.369
0.369
Robert Armstrong
Career
Per 600 PA
0.531
0.531
Jack O'Brien
Careerverified
Per 600 PAverified
0.7
0.7
Robert Armstrong
Career
Per 600 PA
0.082
0.082
Jack O'Brien
Careerverified
Per 600 PAverified
0.103
0.103
Robert Armstrong
Career
Per 600 PA
0.178
0.178
Jack O'Brien
Careerverified
Per 600 PAverified
0.241
0.241
Robert Armstrong
Career
Per 600 PA
0.385
0.385
Jack O'Brien
Careerverified
Per 600 PAverified
0.683
0.683
Robert Armstrong
Career
Per 600 PA
0.229
0.229
Jack O'Brien
Careerverified
Per 600 PAverified
0.266
0.266
Robert Armstrong
Career
Per 600 PAverified
9
110.2
Jack O'Brien
Careerverified
Per 600 PA
366
92.27
Robert Armstrong
Career
Per 600 PA
5
61.22
Jack O'Brien
Careerverified
Per 600 PAverified
308
77.65
Robert Armstrong
Career
Per 600 PAverified
14
171.43
Jack O'Brien
Careerverified
Per 600 PA
663
167.14
Robert Armstrong
Career
Per 600 PA
3.17
38.78
Jack O'Brien
Careerverified
Per 600 PAverified
318.06
80.18
Robert Armstrong
Career
Per 600 PA
0
0
Jack O'Brien
Careerverified
Per 600 PAverified
31
7.82
Robert Armstrong
Career
Per 600 PA
0
0
Jack O'Brien
Careerverified
Per 600 PAverified
180
45.38
Robert Armstrong
Career
Per 600 PA
0
0
Jack O'Brien
Career
Per 600 PA
0
0
Robert Armstrong
Careerverified
Per 600 PA
1
12.24
Jack O'Brien
Career
Per 600 PAverified
31
7.82
Robert Armstrong
Career
Per 600 PA
49
49
Jack O'Brien
Careerverified
Per 600 PAverified
76.77
76.77
Robert Armstrong
Career
Per 600 PA
0
0
Jack O'Brien
Careerverified
Per 600 PAverified
5.81
5.81
Robert Armstrong
Career
Per 600 PA
0
0
Jack O'Brien
Career
Per 600 PA
0
0
Robert Armstrong
Career
Per 600 PA
0
0
Jack O'Brien
Career
Per 600 PA
0
0
Robert Armstrong
Career
Per 600 PA
0
0
Jack O'Brien
Career
Per 600 PA
0
0
Robert Armstrong
Career
Per 600 PA
0
0
Jack O'Brien
Careerverified
Per 600 PAverified
76
19.16
Robert Armstrong
Careerverified
Per 600 PAverified
1
12.24
Jack O'Brien
Career
Per 600 PA
0
0
Robert Armstrong
Career
Per 600 PA
1
12.24
Jack O'Brien
Careerverified
Per 600 PAverified
76
19.16
Robert Armstrong
Career
Per 600 PA
0
0
Jack O'Brien
Careerverified
Per 600 PAverified
100
100

Fielding Stats for Robert Armstrong and Jack O'Brien

Robert Armstrong
Career
Per 9 Innings
1
1
Jack O'Brien
Careerverified
Per 9 Inningsverified
8
8
Robert Armstrong
Career
Per 9 Innings
12
0.94
Jack O'Brien
Careerverified
Per 9 Inningsverified
573
1.1
Robert Armstrong
Careerverified
Per 9 Inningsverified
12
0.94
Jack O'Brien
Career
Per 9 Innings
0
0
Robert Armstrong
Career
Per 9 Innings
345
27
Jack O'Brien
Careerverified
Per 9 Innings
14076
27
Robert Armstrong
Career
Per 9 Innings
115
9
Jack O'Brien
Careerverified
Per 9 Innings
4692
9
Robert Armstrong
Career
Per 9 Innings
29
2.27
Jack O'Brien
Careerverified
Per 9 Inningsverified
2908
5.58
Robert Armstrong
Career
Per 9 Innings
2
0.16
Jack O'Brien
Careerverified
Per 9 Inningsverified
619
1.19
Robert Armstrong
Careerverified
Per 9 Inningsverified
7
0.55
Jack O'Brien
Career
Per 9 Innings
311
0.6
Robert Armstrong
Career
Per 9 Innings
38
2.97
Jack O'Brien
Careerverified
Per 9 Inningsverified
3838
7.36
Robert Armstrong
Career
Per 9 Innings
31
2.43
Jack O'Brien
Careerverified
Per 9 Inningsverified
3527
6.77
Robert Armstrong
Career
Per 9 Innings
81.58
81.58
Jack O'Brien
Careerverified
Per 9 Inningsverified
91.9
91.9
Robert Armstrong
Career
Per 9 Innings
2.583
2.583
Jack O'Brien
Careerverified
Per 9 Inningsverified
6.155
6.155
Robert Armstrong
Careerverified
Per 9 Inningsverified
100
100
Jack O'Brien
Career
Per 9 Innings
0
0
Robert Armstrong
Career
Per 9 Innings
0
0
Jack O'Brien
Careerverified
Per 9 Inningsverified
128
0.25
Robert Armstrong
Careerverified
Per 9 Inningsverified
0
0
Jack O'Brien
Career
Per 9 Innings
279
0.54
Robert Armstrong
Career
Per 9 Innings
0
0
Jack O'Brien
Career
Per 9 Innings
0
0
Robert Armstrong
Careerverified
Per 9 Innings
0
0
Jack O'Brien
Career
Per 9 Innings
2
0
Robert Armstrong
Career
Per 9 Innings
0
0
Jack O'Brien
Careerverified
Per 9 Innings
2
0