The Arizona Diamondbacks and Kansas City Royals present a compelling World Series odds comparison. The Arizona Diamondbacks currently sit at +7100 (1.4%) while the Kansas City Royals are at +3060 (3.2%) — a razor-thin margin separating the two.
Since the start of the 2026 season, the Arizona Diamondbacks have drifted from +6900 to +7100, while the Kansas City Royals have shortened from +3110 to +3060.
The market currently gives the Kansas City Royals the edge at +3060, while the Arizona Diamondbacks sit at +7100. Both teams' full odds history across all tracked sportsbooks is charted above.