Detroit Tigers vs. Chicago Cubs

Platform comparison

Market context

The Detroit Tigers defeated the Chicago Cubs 8–6 in a 10th-inning thriller at Wrigley Field on Monday, 20 July 2026, with Spencer Torkelson delivering a two-run single to seal the win [3]. This outcome validates the 100% YES crowd-implied probability on the prediction market, as the game has already concluded with a clear Tigers victory under official MLB statistics [3].

Historically, prediction markets resolving to 100% before or immediately after game completion are rare in live sports unless the event is settled; comparable cases include post-game markets on Polymarket where odds snapped to certainty once the final score was confirmed by the governing body. In this instance, the divergence is stark: sportsbooks like ESPN listed the Cubs as favourites at –116, while the Tigers were –102, yet the actual result flipped the implied probability entirely to Tigers certainty [1][7].

Traders should monitor the official MLB final statistics page for any retroactive adjustments, though no such changes are expected given the AP-confirmed recap [3]. The settlement window ending 2026-07-28 allows ample time for verification, but with the game already played and the winner confirmed, the only catalyst is the formal closure of the market. No further announcements or schedule dependencies apply, as the event is complete [3][4].

Sources: 1 · 2 · 3 · 4 · 5

Methodology

Methodologically we separate two layers: the live probability (Polymarket mid-price) and the platform attributes (fee, KYC, settlement currency, payment rails). That keeps the comparison honest — a single canonical probability across the row, with the venue-by-venue trade-offs spelt out in the columns next to it.

Resolution & payout

Polymarket-based markets settle through the UMA Optimistic Oracle on Polygon. A proposer submits the outcome, a two-hour challenge window opens, and unchallenged proposals finalise the resolution. Payouts settle automatically in USDC the moment the result is final — no bookmaker, no delay.

Kalshi-based markets settle in USD via the CFTC-regulated clearinghouse. Betfair Exchange settles in GBP/EUR net of commission. Manifold is play-money and does not pay out real funds.

FAQ

Is this market available outside the US?

Polymarket itself is geo-blocked in the US/UK/EU. Always check the legal status of prediction markets in your jurisdiction before trading.

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 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 fast are USDC deposits?

Polygon credits deposits after 12 confirmations — usually under 30 seconds. Withdrawals follow the same path and land back in your wallet within minutes.

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.