| 2018 MLB season | |
|---|---|
| League | Major League Baseball |
| Sport | Baseball |
| Duration | March 29 – October 28, 2018 |
| Number of games | 162 |
| Number of teams | 30 |
| TV partner(s) | Fox/FS1, TBS, ESPN, MLB Network |
| Draft | |
| Top draft pick | Casey Mize |
| Picked by | Detroit Tigers |
| Regular season | |
| Season MVP | AL: Mookie Betts (BOS) NL: Christian Yelich (MIL) |
| Postseason | |
| AL champions | Boston Red Sox |
| AL runners-up | Houston Astros |
| NL champions | Los Angeles Dodgers |
| NL runners-up | Milwaukee Brewers |
| World Series | |
| Champions | Boston Red Sox |
| Runners-up | Los Angeles Dodgers |
| World Series MVP | Steve Pearce (BOS) |
The 2018 Major League Baseball season began on March 29. The regular season ended on October 1, extended a day for tiebreaker games to decide the winners of the National League Central and National League West. The postseason began on October 2. The World Series began on October 23, and ended on October 28 with the Boston Red Sox defeating the Los Angeles Dodgers in five games to win their ninth World Series championship.
The 89th Major League Baseball All-Star Game was held on July 17 at Nationals Park, the home of the Washington Nationals. The American League won, 8–6, in 10 innings.
This was also the last season for the August trade waivers.