Newport: Mananchaya Sawangkaew vs Caroline Dolehide

Platform comparison

Market context

The underlying event is the Newport Challenger tennis match between Mananchaya Sawangkaew and Caroline Dolehide, originally set for 7 July 2026 at 11:00 ET. Sawangkaew, ranked 164, faces Dolehide at 214, with the match now confirmed as completed with a Sawangkaew victory on 8 July 2026[1][5]. The prediction market’s 100% YES implied probability correctly anticipates the outcome, resolving to Sawangkaew advancing, while no divergence exists between sportsbook lines and the market settlement given the result is already final[1].

Historically, 100% implied probabilities in completed matches signal near-certainty when the winner is already determined, as seen in prior Newport Challenger resolutions where early-set wins locked in outcomes before market closure[1][2]. Comparable cases show that when a player like Sawangkaew secures a win in a straight-set format, markets rarely adjust post-result, mirroring this contract’s static pricing. Traders should watch for official WTA tour announcements confirming the match result and any schedule updates for subsequent rounds, as delays beyond seven days could trigger a 50-50 resolution if no winner is confirmed[1][3]. Recent WTA updates confirm Sawangkaew’s win, with no pending cancellations or ties reported[2].

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 Best Prediction Markets 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.

FAQ

Is this market available outside the US?

Polymarket itself is geo-blocked in the US/UK/EU. Always check the legal status of prediction markets in your jurisdiction before trading.

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.

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.

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.