Swedish Open: Daniel Altmaier vs Hugo Gaston

Platform comparison

Market context

Daniel Altmaier and Hugo Gaston are locked in for their first-round clash at the Nordea Open in Båstad today, with the match set to begin at 14:00 local time on Court 1. The crowd-implied probability of 100% YES suggests the market expects the match to proceed without cancellation, a stark contrast to the 50-50 settlement rule that applies if the contest is delayed beyond seven days or ends incomplete due to external factors.

Historical precedents in ATP clay-court tournaments show that first-round matches rarely face cancellation unless severe weather or player injury intervenes, making the 100% probability a rational reflection of typical tournament stability. In comparable cases from recent Swedish Opens, matches scheduled for midday on clay have proceeded to completion even when rain delays occurred earlier, with play resuming within hours rather than days, reinforcing the likelihood of a decisive outcome rather than a split settlement.

Traders should monitor the official ATP weather bulletin for Båstad and any late player status updates from the tournament’s on-site press desk, as these are the primary catalysts that could alter the settlement outcome. A recent preview from Tennis Tonic notes Altmaier as the favourite with odds of 1.66, citing his 1-0 clay head-to-head advantage over Gaston, while the match’s 14:00 start time leaves minimal window for significant schedule disruption before the settlement window closes on 20 July 2026[4].

Sources: 1 · 2 · 3 · 4

Methodology

We track Swedish Open: Daniel Altmaier vs Hugo Gaston 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

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

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.

Do I need to KYC for this market?

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

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.