Swiss Open: Stefanos Tsitsipas vs Ignacio Buse

Platform comparison

Market context

Stefanos Tsitsipas faces Ignacio Buse in the first round of the 2026 Swiss Open Gstaad, with the match originally scheduled for 13 July but currently showing live scores of 0–0 as of 14 July. On Polymarket, the contract for Tsitsipas advancing trades at a 100% YES probability, implying the market believes he will win despite external models favouring his opponent. This pricing diverges sharply from predictive analytics; Dimers’ advanced tennis model assigns Buse a 53% win probability, while Bleacher Nation’s moneyline analysis suggests Buse holds a 58.3% implied chance with -140 odds versus Tsitsipas’ +110 [4][5].

Historical precedents in ATP prediction markets show that 100% pricing often reflects liquidity gaps or delayed settlement rather than genuine certainty, particularly when live data contradicts the implied outcome. In similar early-round matches where one player is a clear favourite on paper but the market prices the underdog at certainty, corrections typically occur once match footage confirms the actual result or if the match is postponed beyond the seven-day resolution window. The current 100% tag may signal that the market has not yet incorporated the live 0–0 status or the conflicting expert tips favouring Buse [3].

Traders should monitor the official ATP Gstaad schedule for confirmation of whether the match has commenced or been delayed, as any postponement beyond seven days triggers a 50–50 resolution. Key catalysts include the live score update on Sportschau, which currently shows no sets won by either player, and any official announcements regarding weather or player availability that could delay play [2]. Until the match concludes or is officially cancelled, the on-chain conditional tokens on Polygon remain locked in USDC, with the final settlement dependent on the verified advancement of one player.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

We track Swiss Open: Stefanos Tsitsipas vs Ignacio Buse 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

Settlement runs on-chain. Polymarket's contract logic separates YES and NO shares as conditional tokens; at resolution the winning share lifts to $1.00 and the losing one to $0. The outcome input comes from the UMA Optimistic Oracle, which secures against bad resolution with a bond + dispute window.

Once finalised, the smart contract pays USDC to the holders' wallets within minutes — no withdrawal fees beyond Polygon network gas. Kalshi settles in USD via CFTC clearance, Betfair in account currency net of commission, Manifold in play-money mana with no cash-out.

FAQ

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.

Do I need to KYC for this market?

On Polymarket directly, no — it's wallet-based. Intermediary brokers like PolyGram trigger KYC only above $1,500 of lifetime trading volume; under that you trade pseudonymously with a single wallet address.