The following are the baseball events of the year 1890 throughout the world.
Any team shown in small text indicates a previous team a player was on during the season.
| American Association | National League | Players' League | ||||
|---|---|---|---|---|---|---|
| Stat | Player | Total | Player | Total | Player | Total |
| AVG | Jimmy Wolf (LOU) | .363 | Jack Glasscock (NYG) | .336 | Pete Browning (CLI) | .373 |
| HR | Count Campau (STL) | 9 | Thomas Burns (BRO) Mike Tiernan (NYG) Walt Wilmot (CHI) | 13 | Hardy Richardson (BSR) | 16 |
| RBI | Spud Johnson (COL) | 113 | Thomas Burns (BRO) | 128 | Hardy Richardson (BSR) | 152 |
| W | Sadie McMahon (BAL/ PHA ) | 36 | Bill Hutchison (CHI) | 41 | Mark Baldwin (CPI) | 33 |
| ERA | Scott Stratton (LOU) | 2.36 | Billy Rhines (CIN) | 1.95 | Silver King (CPI) | 2.69 |
| K | Sadie McMahon (BAL/ PHA ) | 291 | Amos Rusie (NYG) | 341 | Mark Baldwin (CPI) | 206 |
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