In the race for the World Series, the Arizona Diamondbacks (+7000) and Miami Marlins (+18500) are separated by a razor-thin margin. The implied probabilities — 1.4% and 0.5% respectively — tell the story of how the market views these two contenders.
Since the start of the 2026 season, the Arizona Diamondbacks have drifted from +6500 to +7000, while the Miami Marlins have drifted from +18500 to +18500.
The market currently gives the Arizona Diamondbacks the edge at +7000, while the Miami Marlins sit at +18500. Both teams' full odds history across all tracked sportsbooks is charted above.