Jack O'Brien (catcher)
John K. O'Brien (born John K. Byrne, June 12, 1860 – November 20, 1910) was an American Major League Baseball player. He played primarily catcher and first base from 1882 to 1890 in the American Association. External links Baseball Almanac 1860 births 1910 deaths 19th-century baseball players Major League Baseball catchers Major League Baseball first basemen Philadelphia Athletics (AA) players Brooklyn Grays players Baltimore Orioles (AA) players San Francisco Reno players Philadelphia Athletics (minor league) players St. Paul Apostles players Duluth Whalebacks players Baseball players from Philadelphia Jack O'Brien at SABR (Baseball BioProject)