Baltimore Orioles vs. Houston Astros

Platform comparison

Market context

The Baltimore Orioles defeated the Houston Astros 5–2 in their scheduled MLB game at Daikin Park on Sunday, 19 July 2026, extending their season-best winning streak to seven matches. Brandon Young pitched seven innings for one run while Coby Mayo delivered a home run, securing the victory that resolves this prediction market to “Baltimore Orioles” with certainty. The 100% YES crowd-implied probability now reflects the completed outcome rather than a forecast, as the game has concluded and official statistics confirm the result.

Historically, prediction markets on completed sporting events that settle at 100% probability mirror the behaviour seen in election markets once results are officially declared; the probability does not drift because the event is no longer uncertain. Comparable cases include post-game MLB markets where the final score is published by the governing body, eliminating any ambiguity about the winner. In such instances, the market’s resolution is immediate and definitive, with no room for reversal unless an official protest overturns the result—a scenario that has not occurred in this fixture.

Traders should monitor the official final statistics released by MLB as the primary resolution source, confirming the 5–2 scoreline and the absence of any postponement or cancellation. No further catalysts apply, as the game has finished and the settlement window closing on 26 July 2026 merely formalises the already-determined outcome. According to CBS Sports’ box score, the result is final and unchallenged, leaving no pending announcements or dependencies to watch [1]. The market leans entirely on this completed result, with no active debates or declarations influencing its resolution.

Sources: 1 · 2 · 3 · 4

Methodology

This page tracks Baltimore Orioles vs. Houston Astros across four political prediction venues. Live odds come from the Polymarket order book (the deepest political prediction-market book). Kalshi is the CFTC-regulated US alternative, Betfair the established UK sports-exchange with politics markets, Manifold the open play-money variant. For users geo-blocked from Polymarket directly, brokers like Election Predictions UK provide a 0%-fee route into the same order book.

Resolution & payout

Political markets typically settle on official candidate or agency confirmation. Polymarket uses UMA Optimistic Oracle: a proposer posts the outcome with a bond, the two-hour window opens, then the smart contract pays USDC.

Kalshi settles USD via CFTC clearinghouse, with clearly defined resolution sources (e.g. AP race calls for elections). Betfair settles after the official outcome is registered with the league or agency. Manifold is play-money.

FAQ

How accurate are political prediction markets?

Historically more accurate than polls. Polymarket's Brier score on US 2024 elections was ~0.11 — better than 538 (~0.14) and every mainstream poll. Markets aggregate information with real skin in the game.

Can prediction markets influence election outcomes?

Markets reflect expectations rather than create them. Studies show public-facing markets can anchor expectations, but don't influence the underlying outcome. Political markets are information, not advocacy.

Which platform has the deepest political liquidity?

Polymarket — by far. US 2024 presidential volume was ~$3.5B vs Kalshi (~$200M) and Betfair (~$120M). Where Polymarket is geo-blocked, brokers like Election Predictions UK route into the same order book at 0% fees.

Why do Polymarket and Kalshi differ on elections?

Kalshi must follow CFTC compliance — strict definitions, clear resolution sources, US citizens only with KYC. Polymarket operates globally without CFTC oversight — deeper liquidity, but also higher regulatory risk.

Which political events have the biggest volume?

US Presidential election, party nominations (DNC/RNC), Senate majorities, individual state outcomes (Pennsylvania, Michigan, Wisconsin), and major European elections. Peak markets reach $50-500M per event.