Zug: Harold Mayot vs Mika Brunold

Platform comparison

Market context

Harold Mayot is priced at **100% YES** on Polymarket for this Zug match, meaning the market is treating his advance over Mika Brunold as fully locked in on the current conditional token set, with settlement in **USDC on Polygon** once the event outcome is known. The contract’s real-world trigger is simple: if Mayot advances, YES settles; if Brunold advances, NO settles; and if the match is never completed under the market rules, resolution can fall back to **50-50**.

That level of certainty is unusual in tennis markets, where prices can swing sharply on late withdrawals, walkovers, or a player retiring after the match starts. Historical read-throughs for similar contracts usually come down to whether the event is officially recorded as a completed result or whether organisers announce a cancellation, postponement, or retirement outcome that forces the market into its contingency rules. A 100% price therefore signals that traders see very little room left for an alternative settlement path, not just a strong on-court favourite.

For a trader, the key catalysts are administrative rather than tactical: official order-of-play updates, start-time changes, and any last-minute injury or withdrawal notices from the tournament or players’ teams. Because this contract settles on whether Mayot advances, the most important dependency is whether the match is actually played to a definitive result before the settlement window closes, since a non-played or unresolved match can push the market towards the fallback outcome.

Sources: 1

Methodology

Methodologically we separate two layers: the live probability (Polymarket mid-price) and the platform attributes (fee, KYC, settlement currency, payment rails). That keeps the comparison honest — a single canonical probability across the row, with the venue-by-venue trade-offs spelt out in the columns next to it.

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

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.

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.