US Open, Qualification WTA: Savannah Broadus vs Tyra Caterina Grant

Platform comparison

Market context

Polymarket has this contract priced at 0% YES, so the market is treating Savannah Broadus as effectively dead on-chain unless the result updates before the settlement window closes. On Polygon, traders are still holding USDC-backed conditional tokens, but with a zero print there is no active probability attached to Broadus advancing unless the market reopens on fresh match data.

The real-world event is a US Open women’s qualifying match between Broadus and Tyra Caterina Grant, originally scheduled for 24 August 2026 at 3:30pm ET. The draw and live match listings placed Grant higher in the field, with Broadus around WTA No. 307 and Grant around No. 153, which made Grant the clearer pre-match favourite and helps explain why Broadus has not attracted meaningful YES support.[1][2][3]

For traders, the key checks are simple: whether the qualifying round result is officially posted, whether any retirement, walkover or cancellation is recorded, and whether the match is completed before the market’s 7 September deadline. The US Open qualifying schedule ran across 24–27 August, so a delayed conclusion or administrative no-contest would matter more than the original start time, because unresolved matches can still force a 50-50 settlement under the contract terms.[4][5]

Sources: 1 · 2 · 3 · 4 · 5

Methodology

We track US Open, Qualification WTA: Savannah Broadus vs Tyra Caterina Grant 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.

UK Frequently Asked Questions

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.

Is Polymarket legal in the UK?

Polymarket is accessible to UK traders but is not UKGC-licensed. It operates under US CFTC jurisdiction. UK residents face no domestic legal prohibition on using it, but UKGC consumer protections do not apply. For UKGC-regulated alternatives, Betfair Exchange and Smarkets offer similar prediction-style markets.

Do I pay tax on prediction market profits in the UK?

UKGC-licensed platform profits (Betfair, Smarkets) are typically tax-free gambling winnings for UK individuals. Polymarket profits involve USDC crypto transactions, which HMRC treats as Capital Gains Tax events. Keep full transaction records and report via Self Assessment if gains exceed £3,000 per tax year.

How do I deposit on Polymarket from the UK?

UK traders typically fund Polymarket via Coinbase UK, Kraken or Revolut — buying USDC with GBP and transferring to a Polygon-compatible wallet (MetaMask, Coinbase Wallet). Polymarket's onboarding walks you through the bridging process. Typical GBP-to-USDC conversion costs 0.5–1%.