| John O'Brien | |||
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| Second baseman | |||
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Born: July 13, 1866 Saint John, New Brunswick |
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Died: May 13, 1913 (aged 46) Lewiston, Maine |
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| MLB debut | |||
| April 22, 1891, for the Brooklyn Grooms | |||
| Last MLB appearance | |||
| October 7, 1899, for the Pittsburgh Pirates | |||
| MLB statistics | |||
| Batting average | .254 | ||
| Home runs | 12 | ||
| Runs batted in | 229 | ||
| Teams | |||
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John Joseph O'Brien (July 13, 1866 – May 13, 1913) was a Canadian professional baseball player. He played second base in Major League Baseball between 1891 and 1899.