Will Miami Marlins win the 2026 National League Championship Series?

From each venue's own fee data or published rules (Polymarket: fee schedule on the market; Kalshi: official taker formula). The simple percent is a shorthand—actual dollars still depend on price and size. Hover a venue for full wording.

Polymarket: 5%
Kalshi: 7%

Contract rules on Will Miami Marlins win the 2026 National League Championship Series?

Compare the exchange-specific contract text behind the prices above.

PPolymarket

Description

This market will resolve according to the team that wins the 2026 National League Championship Series. If at any point it becomes impossible for a listed team to win the 2026 National League Championship Series per the rules of the MLB (e.g., they are eliminated in the playoffs), the corresponding market will resolve to “No”. If the 2026 National League Championship Series is cancelled, postponed after November 31, 2026, 11:59 PM ET, or there is otherwise no winner declared within that timeframe, this market will resolve to “Other”. The primary resolution source will be official information from Major League Baseball (https://www.mlb.com/); however, a consensus of credible reporting may also be used.

Close date

Nov 1, 2026

KKalshi

View contract↗

Description

If Miami win the 2026 Pro Baseball National League Championship, then the market resolves to Yes.

Resolution criteria

Kalshi is not affiliated, associated, authorized, endorsed by, or in any way officially connected with the Governing League. All trademarks, logos, and brand names are the property of their respective owners.

Close date

Oct 31, 2028

Resolution date

Nov 1, 2026