Will Philadelphia win the 2026 Pro Baseball Championship?

Fee-adjusted Yes on one venue and No on another for Will Philadelphia win the 2026 Pro Baseball Championship?. Indigo rings on the prices above mark those asks. Assume equivalent resolution.

Yes onPolymarket↗4.1¢+No onKalshi↗95.5¢=99.6¢combined·+0.4% implied

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Fees

For the cross-venue prices shown above — same venue, same schedule for each outcome.

Trading fees

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.

Kalshi: 7%
Polymarket: 3%

Contract rules

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

KKalshi

Description

If Philadelphia wins the 2026 Pro Baseball Championship, then the market resolves to Yes.

Close date

Oct 31, 2028

Resolution date

Nov 1, 2026

PPolymarket

View contract↗

Description

This market will resolve according to the team that wins the 2026 MLB World Series. If at any point it becomes impossible for a listed team to win the 2026 MLB World Series per the rules of MLB (e.g., they are eliminated in the playoffs), the corresponding market will resolve to “No”. If the 2026 MLB season is cancelled, postponed after December 31, 2026 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 MLB (https://www.mlb.com/); however, a consensus of credible reporting may also be used.

Close date

Oct 31, 2026