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

Platform comparison

Market context

Savannah Broadus and Tyra Caterina Grant were drawn to meet in the US Open women’s qualifying first round on hard courts in New York, with the match listed for 24 August and a scheduled start around 18:30 UTC/20:30 local time.[1][3][10] The market’s 0% implied YES price looks driven more by stale timing than by a live read-through of the contest itself: the draw has already placed both players in the same section, and one public match listing shows the result as completed 2-0 to Grant.[2][3]

For comparable reads, Grant entered as the higher-ranked player in the draw, around WTA 153 versus Broadus near WTA 307, and her 2026 record has been materially stronger through the spring and summer, including wins at WTA-level and qualifying events.[1][4][5][6] Broadus was presented as a US wild card making her Grand Slam qualifying debut, which typically makes pre-match pricing more sensitive to opponent strength and late withdrawal risk than to name recognition.[11]

A programmatic trader would mostly watch for three things: the official US Open draw page or scores feed, any rescheduling or walkover notation, and whether the match is marked finished before the settlement deadline.[3][10] If the match remains unplayed, is cancelled, or lacks a winner by 7 September 2026, the market resolves 50-50, so bots handling conditional orders should key off the match status rather than the original fixture time alone.[3]

Sources: 1 · 2 · 3 · 4 · 5

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 Polymarket Review UK, which mirrors the Polymarket order book directly.

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.

UK Frequently Asked Questions

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 Polymarket Review 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.

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%.