The Arizona Diamondbacks and Boston Red Sox present a compelling World Series odds comparison. The Arizona Diamondbacks currently sit at +8600 (1.1%) while the Boston Red Sox are at +4890 (2.0%) — a razor-thin margin separating the two.
Since the start of the 2026 season, the Arizona Diamondbacks have drifted from +6500 to +8600, while the Boston Red Sox have drifted from +1640 to +4890.
The market currently gives the Boston Red Sox the edge at +4890, while the Arizona Diamondbacks sit at +8600. Both teams' full odds history across all tracked sportsbooks is charted above.