The Arizona Diamondbacks and Houston Astros present a compelling World Series odds comparison. The Arizona Diamondbacks currently sit at +7100 (1.4%) while the Houston Astros are at +2220 (4.3%) — 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 Houston Astros have shortened from +2500 to +2220.
The market currently gives the Houston Astros the edge at +2220, while the Arizona Diamondbacks sit at +7100. Both teams' full odds history across all tracked sportsbooks is charted above.