Zug: Harold Mayot vs Mika Brunold

Platform comparison

Market context

Polymarket has this contract pinned at **100% YES** today, with traders effectively pricing Harold Mayot to advance against Mika Brunold and the position settling in USDC on Polygon via conditional tokens if that outcome is confirmed. With a market already fully resolved in the crowd’s view, the key question is not direction but whether the underlying Zug fixture is actually completed in a way that matches the settlement rules.

Comparable tennis markets at or near 100% often stay there when the listed favourite is expected to play, because only a genuine non-runner, cancellation, or late postponement can force a fallback to the 50-50 clause. Independent match pages also lean Mayot’s way: one live H2H page lists Mayot as the winner, while another odds model gives him a 52.12% implied chance, a much softer edge than the market price suggests.[1][2] That gap is useful context for Polymarket users, because a near-certain contract can still hinge on mundane operational risk rather than match strength.

The main catalysts to watch are the tournament’s official order of play, any late change to the start time, and whether either player withdraws before first ball. If the match begins, retirement rules matter because the market says a started-but-unfinished match still resolves to the player who advances, whereas a cancellation, tie, or delay beyond seven days pushes it to 50-50. For a 100% contract, the practical risk is therefore administrative rather than competitive: court availability, weather, or schedule compression can matter more than pre-match form.

Sources: 1 · 2

Methodology

This page is a comparison snapshot: one live quote, four reference venues with their key attributes, and a single execution path — every trade button routes to Kalshi UK, which mirrors the Polymarket order book directly.

Resolution & payout

At resolution the UMA oracle takes over: a proposer posts the outcome with a bond, any token holder can dispute within two hours. Without dispute the result is accepted and the smart contract distributes USDC instantly.

On Kalshi (CFTC-regulated) resolution runs through their in-house clearing engine in USD. Betfair Exchange settles after match end in the account's local currency. Manifold pays no cash — only its in-platform "mana" currency.

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 UK. 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 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.

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.