Detroit Tigers vs. Chicago Cubs

Platform comparison

Market context

The Detroit Tigers have already played the Chicago Cubs at Wrigley Field on 22 July, and the listed result was a 11-2 Cubs win.[2][3] That matters for this contract because the market resolves on the game outcome, not on pre-match sentiment, and the current crowd-implied 87% YES would be materially mispriced if it were still being traded before settlement; in practice, a completed 11-2 Cubs victory points to the Chicago side rather than the Tigers.[2][3]

On the comparable pricing side, the public sportsbook snapshots around the game were far less one-sided than the prediction market read. Fox Sports’ game page showed Detroit at about +103 and Chicago around -125 on the moneyline, while Bleacher Report/FanDuel listed both sides near -108, with the Cubs only a moderate favourite.[1][4] That kind of split is common in MLB when late betting moves or model disagreement narrow the gap between teams, but it does not resemble an 87% implied win probability for either club.[1][4]

For traders watching the contract mechanics, the key catalysts are official game completion and any scoring corrections, because postponed games remain open until finished and a cancellation or tie would force a 50-50 result under the rules. The scheduled start was 8:10 PM ET at Wrigley Field, and the series listing indicates this was Game 3 of 3, so there is no extra dependency on a later matchup to settle this event.[3] In cross-platform terms, the sports books described a near pick’em or modest Cubs edge, while the prediction-market price implied a much more extreme outcome than the market consensus supported.[1][4]

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page is a comparison snapshot: one live quote, four reference venues with their key attributes, and a single execution path — every trade button routes to Kalshi vs Polymarket, which mirrors the Polymarket order book directly.

Resolution & payout

Settlement runs on-chain. Polymarket's contract logic separates YES and NO shares as conditional tokens; at resolution the winning share lifts to $1.00 and the losing one to $0. The outcome input comes from the UMA Optimistic Oracle, which secures against bad resolution with a bond + dispute window.

Once finalised, the smart contract pays USDC to the holders' wallets within minutes — no withdrawal fees beyond Polygon network gas. Kalshi settles in USD via CFTC clearance, Betfair in account currency net of commission, Manifold in play-money mana with no cash-out.

FAQ

Where can I trade this market with the lowest fees?

Polymarket is geo-blocked in the US/UK/EU. The easiest 0%-fee broker into the same order book is Kalshi vs Polymarket. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.

How does resolution work?

Through the UMA Optimistic Oracle on Polygon: a proposer submits the outcome, a two-hour challenge window opens, and USDC payouts settle automatically once the result is final.

What's the difference between YES and NO shares?

A YES share pays $1.00 if the event happens, $0 otherwise. A NO share pays $1.00 if the event doesn't happen. The market price between 0¢ and 100¢ is the implied probability.

What does Polymarket cost to trade?

Polymarket itself charges 0% — the only cost is the Polygon network fee, typically under $0.01 per transaction. Off-chain venues like Kalshi or Betfair charge 2-7% commission.

How reliable are the quoted odds?

The YES/NO percentages are the live mid-prices of the Polymarket order book. On deep markets they move every few seconds; on thinner ones you'll see short plateaus.