Chicago Cubs vs. Pittsburgh Pirates

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Active sub-markets

Market context

The Chicago Cubs travel to Pittsburgh on 25 May for a regular-season Major League Baseball contest against the Pirates, with first pitch scheduled for 1:35 PM Eastern Time. The current crowd-implied probability of 34 per cent for a Cubs victory reflects modest confidence in Chicago's chances, suggesting the market perceives Pittsburgh as the slight favourite despite the Cubs' stronger historical franchise profile.

Chicago enters the matchup as a team with considerably deeper resources and recent playoff experience compared to Pittsburgh, yet the Pirates have demonstrated competitive capability in head-to-head encounters. Historical records between these National League Central rivals show relatively balanced outcomes over recent seasons, with neither team establishing decisive dominance. The 34 per cent probability sits below what pure strength-of-schedule analysis might suggest for a Cubs side, indicating traders are weighting specific variables—possibly recent form, injury status, or pitching matchups—more heavily than baseline expectations.

Traders monitoring this market should track roster announcements through to game time, particularly confirmation of starting pitchers and any late-inning bullpen availability. Weather conditions at PNC Park on game day could influence offensive output, whilst any last-minute lineup adjustments or injury developments would shift the probability meaningfully. Recent team performance trends, accessible through MLB standings and box-score databases, provide the most reliable data for assessing whether current implied odds reflect genuine competitive balance or represent mispricing relative to underlying team quality.

Methodology

This page tracks Chicago Cubs vs. Pittsburgh Pirates across four political prediction venues. Live odds come from the Polymarket order book (the deepest political prediction-market book). Kalshi is the CFTC-regulated US alternative, Betfair the established UK sports-exchange with politics markets, Manifold the open play-money variant. PolyGram routes every trade through to Polymarket — at 0% fees.

Resolution & payout

Political markets typically settle on official candidate or agency confirmation. Polymarket uses UMA Optimistic Oracle: a proposer posts the outcome with a bond, the two-hour window opens, then the smart contract pays USDC.

Kalshi settles USD via CFTC clearinghouse, with clearly defined resolution sources (e.g. AP race calls for elections). Betfair settles after the official outcome is registered with the league or agency. Manifold is play-money.

FAQ

Where can I trade this market with the lowest fees?

On PolyGram, 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.

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 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.

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.