The following are the baseball events of the year 1891 throughout the world.
World Series: Boston (NL) declined to meet Boston (AA)
| American Association | National League | |||
|---|---|---|---|---|
| Stat | Player | Total | Player | Total | 
| AVG | Dan Brouthers (BSR) | .350 | Billy Hamilton (PHP) | .340 | 
| HR | Duke Farrell (BSR) | 12 | Harry Stovey (BSB) Mike Tiernan (NY) | 16 | 
| RBI | Hugh Duffy (BSR) Duke Farrell (BSR) | 110 | Cap Anson (CHI) | 120 | 
| W | Sadie McMahon (BAL) | 35 | Bill Hutchinson (CHI) | 44 | 
| ERA | Ed Crane (CKK) | 2.45 | John Ewing (NY) | 2.27 | 
| K | Jack Stivetts (STL) | 259 | Amos Rusie (NY) | 337 | 
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