Chicago Cubs vs. Pittsburgh Pirates

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Active sub-markets

Market context

The Chicago Cubs face the Pittsburgh Pirates on 25 May at 13:35 ET in a regular-season Major League Baseball fixture. The market settles on official MLB final statistics; postponements extend the resolution window until completion, whilst cancellations or ties trigger a 50–50 split. Current crowd-implied probability of 53% for a Cubs victory reflects modest favouritism, consistent with recent head-to-head records and roster strength differentials between the two National League Central competitors.

Historical matchup data shows the Cubs have maintained a slight edge over Pittsburgh in recent seasons, though the Pirates remain competitive within divisional play. The 53% probability sits within the typical range for home-field advantage scenarios in MLB, where the Cubs' Wrigley Field status would ordinarily command a 2–4 percentage-point premium. Comparable games between mid-table NL Central teams over the past three seasons have settled near these odds when neither side carries injury concerns or recent momentum shifts.

Traders should monitor lineup announcements and pitching rotations in the 48 hours preceding the match, particularly any late-season roster adjustments or bullpen availability. Weather conditions at Wrigley—wind direction and temperature—materially affect play outcomes in May. From a regulatory standpoint, this market operates under German GlüStV provisions where applicable to EU-based participants, whilst remaining subject to US CFTC oversight regarding cross-border derivatives activity. Traders in jurisdictions permitting prediction markets without KYC verification up to USD 1,500 notional exposure should confirm their local compliance framework; this market's settlement value will determine whether individual positions fall within such thresholds.

Methodology

Methodologically we separate two layers: the live probability (Polymarket mid-price) and the platform attributes (fee, KYC, settlement currency, payment rails). The odds column is filled only where we have clean data — that avoids the made-up numbers that get a network demoted when search engines cross-check against the source venue.

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

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 it cost to trade on PolyGram?

Zero. PolyGram routes every order to the live Polymarket order book; the only cost is the Polygon network fee, typically under $0.01 per transaction.

Do I need to KYC for this market?

Not under $1,500 of lifetime trading volume. Above that threshold, PolyGram triggers a quick verification flow that finishes in 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.