The following are the baseball events of the year 1989 throughout the world.
| League Championship Series (ALCS, NLCS) | World Series | ||||||||
| East | Toronto | 1 | |||||||
| West | Oakland | 4 | |||||||
| AL | Oakland | 4 | |||||||
| NL | San Francisco | 0 | |||||||
| East | Chicago Cubs | 1 | |||||||
| West | San Francisco | 4 | |||||||
| American League | National League | |||
|---|---|---|---|---|
| Type | Name | Stat | Name | Stat |
| AVG | Kirby Puckett MIN | .339 | Tony Gwynn SD | .336 |
| HR | Fred McGriff TOR | 36 | Kevin Mitchell SF | 47 |
| RBI | Rubén Sierra TEX | 119 | Kevin Mitchell SF | 125 |
| Wins | Bret Saberhagen KC | 23 | Mike Scott HOU | 20 |
| ERA | Bret Saberhagen KC | 2.16 | Scott Garrelts SF | 2.28 |
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March 19 - The Cleveland Indians trade outfielder Mel Hall to the New York Yankees in exchange for catcher Joel Skinner and outfielder Turner Ward. March 28 - The Chicago Cubs release pitcher Goose Gossage.