Chicago Cubs vs. Pittsburgh Pirates

Platform comparison

Active sub-markets

Market context

The Chicago Cubs travel to Pittsburgh on 26 May for an evening fixture against the Pirates, with first pitch at 6:40 PM ET. The current crowd-implied probability of 41% for a Cubs victory reflects moderate confidence in the home side, though the Pirates have shown competitive form in recent seasons. Settlement occurs on 2 June at 22:40 UTC, allowing for any weather-related postponements within the standard MLB make-up window.

Historical matchups between these National League Central rivals show the Cubs have maintained a slight edge over the past three seasons, winning approximately 52% of head-to-head contests. However, the Pirates' home record at PNC Park has improved materially since 2023, particularly in May fixtures where Pittsburgh typically benefits from favourable weather conditions and crowd support. The 41% probability assigned to Chicago suggests traders are pricing in both the Cubs' marginal historical advantage and the venue disadvantage, with the remaining 59% distributed between a Pirates win and tie/cancellation scenarios.

Key variables affecting settlement include pitcher assignments—confirmed typically 48 hours before game time—and weather forecasts for Pittsburgh on 26 May, as spring thunderstorms can trigger postponements. Recent roster moves or injury updates from either franchise, publishable via MLB's official injury reports, may shift trader positioning. The settlement window's extension to 2 June accommodates any rescheduled fixture, though complete cancellation without a make-up game would trigger a 50-50 split resolution. Traders should monitor official MLB schedules and team announcements through 25 May for confirmation of the scheduled start time and participant status.

Methodology

This page reviews Chicago Cubs vs. Pittsburgh Pirates across five venues. We show live odds for Polymarket-based markets (sourced from the Polygon order book); for other venues we list platform attributes, since the comparable contracts are not exposed via a public API on every venue. Every CTA points at Polymarket Tax UK — the application we operate, where you trade directly against the Polymarket order book at 0% fees.

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

Where can I trade this market with the lowest fees?

On Polymarket Tax UK, which mirrors the Polymarket order book at 0% fees. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.

Is this market available outside the US?

Polymarket Tax UK is available in most jurisdictions where Polymarket isn't directly accessible. Polymarket itself is geo-blocked in the US/UK/EU. Always check local regulations.

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 Polymarket Tax UK?

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

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.