In the race for the World Series, the Boston Red Sox (+1920) and Chicago Cubs (+1900) are separated by a razor-thin margin. The implied probabilities — 5.0% and 5.0% respectively — tell the story of how the market views these two contenders.
Since the start of the 2026 season, the Boston Red Sox have drifted from +1640 to +1920, while the Chicago Cubs have drifted from +1880 to +1900.
The market currently gives the Chicago Cubs the edge at +1900, while the Boston Red Sox sit at +1920. Both teams' full odds history across all tracked sportsbooks is charted above.