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| Name | Pete O'Brien |
| Given Name | Peter James |
| Birth Date | 1867-6-16 |
| Birth City | Chicago, IL |
| Height | 5'9" |
| Weight | 165 lbs. |
| Batting Hand | Right |
| Pitching Hand | Right |
| Alive | No |
| Age | 70 |
| Year | Team | Hits | At Bats | Home Runs | Runs Batted | Batting Average | Wins | Losses | # of Pitching Games | Strikeouts | # of Shutouts |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1887 | Washington Nationals | 0 | 4 | 0 | 0 | 0 | |||||
| 1890 | Chicago Colts | 30 | 106 | 3 | 16 | 0.283019 |
| Year | Position | Errors | Double Plays | Assists |
|---|---|---|---|---|
| 1887 | 2nd Base | 2 | 0 | 5 |
| 1890 | 2nd Base | 11 | 11 | 80 |