- Card series: Beginnings: 1880's
- City: New York
- Team: Giants
- League: National League
Michael J. Slattery (1866-1904) was an outfielder for five teams over five seasons, including the 1888 Champion NY Giants. He debuted for the Union Association’s Boston entry (the Reds) in 1884 during that league’s only season. Slattery returned to MLB in 1888 with the NL’s Giants for two years before jumping to the NY Player’s League team in 1890. He closed his career with the Cincinnati Reds and Washington Statesmen in ’91.
- Averaged .251 at the plate over his ML tenure
- Best year was in the PL, with a .307 BA, 126 hits, 5 HRs and 18 steals