Phoenix Mercury vs. Connecticut Sun

Platform comparison

Market context

Polymarket is pricing **Phoenix Mercury** at 71% against **Connecticut Sun** for tonight’s WNBA game, so the contract is still trading as a clear favourite but not a certainty. On Polymarket, that probability is expressed in USDC on Polygon through conditional tokens: buyers are effectively paying for exposure to the game’s final result, with settlement based on the official score including overtime, while postponement keeps the market open and a full cancellation would settle 50-50.

That 71% sits above the recent split in the season series, which has been volatile rather than one-sided. Connecticut beat Phoenix 96-83 on 17 July, with Leila Lacan scoring 26, before Phoenix returned the favour later in the month with a 72-63 win, and the Sun also had another close loss to Phoenix in September highlights, showing this matchup can swing on shot-making and late-game execution[2][17][1]. More broadly, the head-to-head results have clustered around narrow margins and momentum shifts, which is consistent with a price that favours the Mercury but still leaves room for a live upset if the game turns into a low-possession grind[11][13].

For traders, the key catalysts are line-ups, late injury news, and whether both teams are at full strength at tip-off, because a single scorer or interior defender can move a WNBA game materially. The fixture itself is scheduled for 7:30 p.m. ET, and live game listings confirm it is the relevant event for settlement rather than any later reschedule or adjacent matchup[6][14]. If the game is delayed, postponed, or moved, the market mechanics matter as much as the basketball result: the contract stays open until completion, so price action can react to schedule changes well before the final buzzer[market description].

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 Alternative UK, which mirrors the Polymarket order book directly.

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

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 Alternative 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%.