In the race for the World Series, the Arizona Diamondbacks (+8600) and Miami Marlins (+26300) are separated by a razor-thin margin. The implied probabilities — 1.1% and 0.4% 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 +8600, while the Miami Marlins have drifted from +18500 to +26300.
The market currently gives the Arizona Diamondbacks the edge at +8600, while the Miami Marlins sit at +26300. Both teams' full odds history across all tracked sportsbooks is charted above.