Pronóstico: Houston Astros vs. San Francisco Giants

Platform comparison

Market context

The Houston Astros travel to San Francisco for a late-summer matchup against the Giants on 11 August, with Polymarket pricing the Astros' victory at 55% implied probability in USDC-settled conditional tokens on Polygon. This represents a modest favourite status for Houston, reflecting their stronger 2024 regular season performance relative to San Francisco's rebuild trajectory. The settlement window extends to 19 August to accommodate any postponements, with the contract resolving 50-50 only if the game is cancelled without a make-up fixture or ends in a tie—an exceedingly rare occurrence in modern baseball.

Historical context suggests the Astros' current pricing aligns with their divisional standing and recent head-to-head record. Houston finished the 2023 season with a winning record in interleague play, whilst the Giants have struggled to maintain consistency in the National League West. Single-game matchups between teams with divergent win-loss records typically see the stronger team priced between 55–65%, placing this contract within expected parameters for a mid-tier favourite.

Traders should monitor starting pitcher assignments and injury reports released closer to game time, as bullpen availability and weather conditions at Oracle Park can shift probabilities meaningfully. San Francisco's recent roster moves and Houston's performance in late-August fixtures will provide additional data points. The late 9:45 PM ET start time may influence trading volume on Polygon, with West Coast traders potentially entering positions after market hours.

Methodology

We track Pronóstico: Houston Astros vs. San Francisco Giants across the five venues with material prediction-market liquidity. The probability shown is the live Polymarket mid; the comparison rows summarise how each venue treats the underlying contract — fees, KYC thresholds, settlement currency, deposit options. The highlighted row marks the cheapest route into Polymarket's order book.

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?

Polymarket is geo-blocked in the US/UK/EU. The easiest 0%-fee broker into the same order book is Polymarket Qué Es. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.

Is this market available outside the US?

Polymarket itself is geo-blocked in the US/UK/EU. Always check the legal status of prediction markets in your jurisdiction before trading.

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 Polymarket cost to trade?

Polymarket itself charges 0% — the only cost is the Polygon network fee, typically under $0.01 per transaction. Off-chain venues like Kalshi or Betfair charge 2-7% commission.

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.