Peter J. O'Brien (June 17, 1877 – January 31, 1917) was a

Major League Baseball Major League Baseball (MLB) is a professional baseball organization and the oldest major professional sports league in the world. MLB is composed of 30 total teams, divided equally between the National League (NL) and the American League (AL), ...

second baseman who played for three seasons. He played for the

Cincinnati Reds The Cincinnati Reds are an American professional baseball team based in Cincinnati. They compete in Major League Baseball (MLB) as a member club of the National League (NL) National League Central, Central division and were a charter member of ...

in 1901, the

St. Louis Browns The St. Louis Browns were a Major League Baseball team that originated in Milwaukee, Wisconsin, as the Milwaukee Brewers. A charter member of the American League (AL), the Brewers moved to St. Louis, Missouri, after the 1901 season, where they p ...

in 1906, and the

Cleveland Naps The Cleveland Guardians are an American professional baseball team based in Cleveland. The Guardians compete in Major League Baseball (MLB) as a member club of the American League (AL) Central division. Since , they have played at Progressive ...

and Washington Senators in 1907.

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1877 births 1917 deaths Major League Baseball second basemen Cincinnati Reds players St. Louis Browns players Cleveland Naps players Washington Senators (1901–1960) players Baseball players from New York (state) Rome Romans players Binghamton Bingos players Cortland Wagonmakers players Utica Pentups players Waverly Wagonmakers players Indianapolis Indians players St. Paul Saints (AA) players Minneapolis Millers (baseball) players Evansville Strikers players South Bend Bux players Atlanta Crackers players Mobile Sea Gulls players {{US-baseball-second-baseman-stub