The Chicago Pirates were a professional baseball team based in Chicago, Illinois, that played in the Players' League for one season in 1890. [1] The franchise used South Side Park as its home field. [2] During their only season, the team finished fourth in the PL with a 75-62 record. [1]
§  | Player was a player-manager | 
|---|---|
†  | Inducted into the National Baseball Hall of Fame and Museum | 
 
 | Player | Position(s) | Season(s) | Notes | Ref | 
|---|---|---|---|---|
| Mark Baldwin | Pitcher | 1890 | Baldwin led the Players' League in innings pitched (492), wins (33), and strikeouts (206). | [3] | 
| Charlie Bartson | Pitcher | 1890 | [4] | |
| Charlie Bastian | Shortstop | 1890 | [5] | |
| Jack Boyle | Catcher / Third baseman | 1890 | [6] | |
| Charlie Comiskey §† | First baseman | 1890 | Comiskey, the Pirates' first baseman and manager, was eventually elected into the Baseball Hall of Fame. | [2] [7] | 
| Dell Darling | First baseman / Shortstop | 1890 | [8] | |
| Hugh Duffy † | Right fielder | 1890 | Duffy led the Players' League in hits (191) and runs scored (161) and was elected into the Baseball Hall of Fame. | [9] | 
| Frank Dwyer | Pitcher | 1890 | [10] | |
| Duke Farrell | Catcher | 1890 | [11] | |
| Silver King | Pitcher | 1890 | In 1890, King pitched 461 innings, won 30 games, and led the Players' League in earned run average (2.69). | [12] | 
| Arlie Latham | Third baseman | 1890 | [13] | |
| Tip O'Neill | Left fielder | 1890 | [14] | |
| Fred Pfeffer | Second baseman | 1890 | [15] | |
| Jimmy Ryan | Center fielder | 1890 | Ryan led the Pirates in batting average (.340) and runs batted in (89). | [2] [16] | 
| Frank Shugart | Shortstop | 1890 | [17] | |
| Ned Williamson | Third baseman | 1890 | [18] |