Will Philadelphia have the longest losing streak in the 2026 Pro Baseball regular season?

This market shows a stark 28-cent cross-venue arbitrage gap, with Kalshi pricing Philadelphia's longest losing streak at just 2% versus Polymarket's 30%, suggesting significant disagreement on the Phillies' 2026 prospects or potential liquidity constraints on one venue. The Kalshi contract has minimal activity ($0 in 24h volume) and tight open interest of only $25, indicating illiquidity that may explain the depressed pricing relative to the more active Polymarket listing. With the market closing 10/15/2026 (mid-season), traders seeking exposure should note the substantial spread and consider the Polymarket venue for better pricing and depth.

Resolution rules

If Philadelphia has the longest losing streak in the Pro Baseball 2026 regular season, then the market resolves to Yes.

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