Borussia Dortmund vs. AS Roma - More Markets

Platform comparison

Market context

Borussia Dortmund will face AS Roma in a pre-season friendly on 15 August at 11:30 AM ET, with settlement determined by whether additional markets for this fixture will be offered on the host platform. The 0% implied probability reflects the current absence of such secondary markets, though the settlement window extends to 15:30 ET on match day itself, allowing for late-stage platform decisions.

Pre-season friendlies typically attract limited derivative market coverage compared to competitive fixtures, particularly when both clubs are mid-tour or preparing for domestic league campaigns. Historical precedent suggests that major European club friendlies—especially those between Serie A and Bundesliga sides—generate secondary markets only when broadcast prominence or betting volume justifies the operational overhead. Dortmund's ongoing squad transitions and Roma's summer restructuring may influence whether either club's commercial or media partners push for expanded market offerings.

The critical variable is platform activity in the 48 hours preceding kick-off. Sportsbooks including Betfair and DraftKings typically signal secondary-market appetite through their own odds expansion; absence of such signals historically correlates with minimal prediction-market proliferation. Roma's recent managerial changes and Dortmund's fixture scheduling across European competitions will determine squad rotation depth, potentially affecting whether the match generates sufficient analytical interest to justify additional contract creation. Traders should monitor official team news releases and broadcast confirmations from ESPN or Sky Sports Italia between 13 and 15 August for indicators of platform-level engagement.

Methodology

This page reviews Borussia Dortmund vs. AS Roma - More Markets 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 Kalshi vs Polymarket, 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

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 Kalshi vs Polymarket. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.

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 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.