Cleveland Guardians vs. Philadelphia Phillies

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Active sub-markets

Market context

The Cleveland Guardians visit the Philadelphia Phillies at Citizens Bank Park on Sunday, with the market currently pricing Cleveland at 39% and Philadelphia at 61%. For a programmatic read, that implies the favourite is only moderately clear rather than dominant, so models should treat pre-match edge as relatively small and highly sensitive to line-up and pitching inputs. In a simple decision rule, the main task is to test whether the live price already reflects the travel split and the home-park adjustment, rather than assuming the away side is mispriced by default.

Recent head-to-head results give a mixed frame. ESPN’s game listing shows Cleveland entering at 30-22 and Philadelphia at 25-25, while last-season series coverage from MLB noted a 3-0 Phillies win at Progressive Field in a rubber match. Historical meeting data is limited and uneven, so a trader would normally weight current team state more heavily than old direct match-ups. In tooling terms, this is the kind of market where copy-trading the closing moneyline without checking starting pitchers can be costly, because the exchange price can move sharply once confirmed line-ups land.

The practical catalysts are the starting pitchers, any late rest decisions, and whether the game time shifts, since postponement keeps the market open until completion. The ESPN listing shows the scheduled first pitch at 1:35 pm local time, so a feed watcher should poll official line-ups and weather close to lock. Recent MLB coverage of the Guardians highlighted a shutout win in Philadelphia’s opener and a subsequent series loss, which matters mainly as context for run prevention rather than as a direct forecasting signal.

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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

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.

Is this market available outside the US?

PolyGram 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 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 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.