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.
| Jack O'Brien | |
|---|---|
 1888 baseball card of O'Brien | |
| Catcher / First baseman | |
| Born: June 12, 1860 Philadelphia, Pennsylvania, U.S. | |
| Died: November 20, 1910 (aged 50) Philadelphia, Pennsylvania, U.S. | |
Batted: Right Threw: Right | |
| MLB debut | |
| May 2, 1882, for the Philadelphia Athletics | |
| Last MLB appearance | |
| September 16, 1890, for the Philadelphia Athletics | |
| MLB statistics | |
| Batting average | .266 |
| Home runs | 11 |
| Runs batted in | 308 |
| Teams | |
| |
External links edit
- Career statistics and player information from Baseball Reference, or Baseball Reference (Minors)
- Baseball Almanac
- Jack O'Brien at SABR (Baseball BioProject)
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