The Boston Red Sox and Kansas City Royals present a compelling World Series odds comparison. The Boston Red Sox currently sit at +4890 (2.0%) while the Kansas City Royals are at +6600 (1.5%) — a razor-thin margin separating the two.
Since the start of the 2026 season, the Boston Red Sox have drifted from +1640 to +4890, while the Kansas City Royals have drifted from +3470 to +6600.
The market currently gives the Boston Red Sox the edge at +4890, while the Kansas City Royals sit at +6600. Both teams' full odds history across all tracked sportsbooks is charted above.