Cleveland Guardians vs. Philadelphia Phillies

Platform comparison

Active sub-markets

Market context

The Cleveland Guardians travel to Philadelphia on 24 May for a single game against the Phillies, with first pitch at 1:35 PM Eastern Time. The 78% crowd-implied probability favouring Cleveland represents a substantial consensus, though this diverges noticeably from typical sportsbook opening lines on comparable AL Central versus NL East matchups, which historically centre closer to 55–60% for visiting teams in May regular season play. The Guardians' recent record and run differential will anchor much of the variance between prediction-market pricing and traditional odds; a team with positive run differential typically commands higher implied win probabilities across both venues.

Traders should monitor roster updates through to game time, particularly any late-inning bullpen availability or unexpected absences. Weather conditions at Citizens Bank Park—notably wind direction and temperature—materially affect outcomes in Philadelphia's ballpark, especially for day games. Pitching matchup confirmation remains critical; if either team deploys a significantly different starter than initially scheduled, the probability gap between sportsbooks and prediction markets may widen. Recent injury reports or roster moves announced in the 48 hours preceding the fixture should be cross-referenced against the current 78% figure, as prediction markets often lag official sportsbook adjustments by several hours.

The settlement window extends to 31 May 2026, providing a five-day buffer for postponements or rescheduling. Traders should verify game status through MLB's official schedule rather than relying solely on early-morning forecasts, as May weather in the Northeast frequently triggers last-minute changes that can shift market pricing substantially.

Methodology

We track Cleveland Guardians vs. Philadelphia Phillies on the five venues with material liquidity for prediction markets. Live odds come from the Polymarket Polygon order book — the only source that ships real-time data under an open licence. For Kalshi, Betfair and Manifold we list platform attributes (fee, KYC, settlement, payment) instead of fabricated odds, because their APIs use non-comparable contract definitions.

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

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.