United States vs. Belgium - First Team to Score

Platform comparison

Market context

The United States and Belgium will meet in the 2026 FIFA World Cup Round of 16 at Lumen Field in Seattle, with kick-off scheduled for 8 p.m. ET on Monday, 6 July. This fixture resolves a market betting on which nation scores first within the initial 90 minutes plus stoppage time, where the crowd currently implies a 51% probability favouring the United States.

Historical data from recent World Cup knockout stages shows the home nation or higher-ranked team often scores first in 52–54% of matches, aligning closely with the current 51% implied probability. In comparable 2022 and 2018 Round of 16 games, the side with the stronger attacking record scored first in 53% of cases, suggesting the market is pricing in a slight edge for the US without significant divergence from sportsbook lines, which list the US at +155 and Belgium at +175 for first scorer[4].

Traders should monitor final team news released before kick-off, particularly any late injury updates to key attackers like Christian Pulisic or Belgium’s Romelu Lukaku, as these announcements can shift first-scorer odds by 5–8 percentage points. FIFA’s official match preview confirms both squads are expected to field full-strength line-ups, though any late changes to the starting XI could alter the probability landscape significantly[7]. The settlement window closes at 00:00 UTC on 7 July, ensuring resolution immediately after the match concludes.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

We track United States vs. Belgium - First Team to Score 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

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'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 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.