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 [2]. This outcome resolves the prediction market favouring the Tigers, aligning with the 100% YES crowd-implied probability that the Tigers would win the scheduled game.

Historically, 100% implied probabilities in MLB win markets rarely persist until game time unless the result is already known or the event has concluded; here, the certainty reflects the game’s completion rather than pre-match forecasting. In comparable cases where prediction markets lag sportsbooks post-event, resolution delays occur only if official statistics are contested, but MLB final stats are typically immediate and definitive [2].

Traders should monitor the official MLB final statistics page for any late adjustments, though no such revisions are expected given the AP-confirmed recap [2]. With the settlement window ending 28 July 2026, the market is effectively settled, and no further catalysts—such as roster announcements or schedule changes—apply to this completed fixture. The divergence between pre-game sportsbook lines (Cubs favoured at −116) and the post-game 100% Tigers probability underscores how prediction markets reflect realised outcomes rather than pre-match odds [1][8].

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

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 PolyGram. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.

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.

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.