| 2003 MLB season | |
|---|---|
| League | Major League Baseball |
| Sport | Baseball |
| Duration | March 30, 2003 – October 25, 2003 |
| Regular Season | |
| Season MVP |
AL: Alex Rodriguez (TEX) NL: Barry Bonds (SFG) |
| League Postseason | |
| AL champions | New York Yankees |
| AL runners-up | Boston Red Sox |
| NL champions | Florida Marlins |
| NL runners-up | Chicago Cubs |
| World Series | |
| Champions | Florida Marlins |
| Runners-up | New York Yankees |
| Finals MVP | Josh Beckett (FLA) |
The 2003 Major League Baseball season ended when the Florida Marlins defeated the New York Yankees in a six-game 2003 World Series. The Detroit Tigers set the American League record for losses in a season, with 119, and the Marlins became the first team to win the championship twice as a wild card.
±hosted the MLB All Star Game