Baltimore Orioles vs. Boston Red Sox

Platform comparison

Market context

The real-world event is an MLB game between the Baltimore Orioles and Boston Red Sox at Fenway Park, scheduled for 7:10PM ET on 20 July. In this prediction market, a YES share means you are betting the market will resolve to your chosen outcome—here, either “Baltimore Orioles” or “Boston Red Sox”—while a NO share means you expect the opposite outcome. The crowd currently implies a 0% chance the Orioles win, suggesting near-total confidence in a Red Sox victory.

Historical matchups between these teams show the Red Sox have dominated recently, including a 17–1 win in April 2026 and an 8–1 victory in June 2026 [1][2]. Most notably, on 20 July 2026—the exact date of this game—the Red Sox beat the Orioles 6–5, extending their winning streak to 14 games and snapping the Orioles’ seven-game streak [3]. This recent pattern frames why the market assigns almost no probability to an Orioles win.

Traders should monitor the official MLB final statistics, as the market resolves based on the recognised outcome, and watch for any postponement notices that would delay settlement. While the game is set for 20 July, the settlement window extends to 27 July 2026, allowing time for a make-up game if needed [3]. No new injury announcements or roster changes have been reported as of 21 July 2026, so current form and the Red Sox’s 14-game streak remain the primary catalysts [4].

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page reviews Baltimore Orioles vs. Boston Red Sox across five venues. The live probability is the Polymarket mid-price, sourced directly from the on-chain Polygon order book; the comparison columns benchmark each venue on fee structure, KYC, settlement currency and payment rails. Every CTA routes to Prediction Market UK, which mirrors the Polymarket order book at 0% fees.

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

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.

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 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 Prediction Market UK trigger KYC only above $1,500 of lifetime trading volume; under that you trade pseudonymously with a single wallet address.