Baltimore Orioles vs. Houston Astros

Platform comparison

Market context

The Baltimore Orioles defeated the Houston Astros 5–2 at Daikin Park on Sunday, 19 July, extending their season-best winning streak to seven games [1]. This result confirms the outcome already priced into the Polymarket contract, which sits at 100% YES for the Orioles, reflecting the game’s completion rather than a speculative forecast [2]. On-chain, the contract is settled in USDC on Polygon using conditional tokens, meaning liquidity has effectively locked in as the event is resolved and the payout mechanism is now deterministic.

Historically, MLB prediction markets that reach 100% probability before settlement typically indicate the game has finished and the official result is confirmed by the governing body, mirroring past cases where postponed games delayed resolution but never altered the final odds once play concluded [1]. In such instances, traders holding the winning side receive their USDC payout automatically once the official final statistics are recognised, with no further price movement possible.

Traders should monitor the official MLB final statistics page for the 19 July game to confirm the resolution source, as any discrepancy between the AP recap and MLB’s database could trigger a manual review [1]. No further announcements or schedule changes are relevant, as the game is complete and the settlement window remains open only to process the automated payout. The probable pitchers listed for the game—Brandon Young and Hunter Brown—have already fulfilled their roles, and their performance is now part of the settled record [4].

Sources: 1 · 2 · 3 · 4

Methodology

We track Baltimore Orioles vs. Houston Astros 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 Scam?. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.

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.

Do I need to KYC for this market?

On Polymarket directly, no — it's wallet-based. Intermediary brokers like Polymarket Scam? trigger KYC only above $1,500 of lifetime trading volume; under that you trade pseudonymously with a single wallet address.

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.