In the race for the World Series, the Cleveland Guardians (+5500) and Miami Marlins (+18500) are separated by a razor-thin margin. The implied probabilities — 1.8% and 0.5% respectively — tell the story of how the market views these two contenders.
Since the start of the 2026 season, the Cleveland Guardians have drifted from +4900 to +5500, while the Miami Marlins have drifted from +18500 to +18500.
The market currently gives the Cleveland Guardians the edge at +5500, while the Miami Marlins sit at +18500. Both teams' full odds history across all tracked sportsbooks is charted above.