Vancouver: Harriet Dart vs Taylah Preston

Platform comparison

Market context

Harriet Dart and Taylah Preston were due to meet in Vancouver’s WTA draw, but the market is trading at **0% YES** for Dart despite the fixture itself appearing on live-score and tournament-tracking pages, so the contract is pricing in an outcome other than a straight Dart advance. That is a notable divergence from the surface-level match context: public tennis databases list the pair’s head-to-head at **2-2**, while one match-tracker still shows Dart as the more experienced player on career winnings and overall tour volume, which usually would not map to a literal zero unless the event has effectively been overtaken by results or scheduling uncertainty.[1][2][14] In comparable tennis contracts, a zeroed price often reflects either a match already leaning decisively away from one player or, more commonly, stale pricing after play has moved on in a live or delayed draw.

The main catalysts to watch are the tournament’s official order of play, whether the match was completed on schedule, and any walkover or retirement rulings that decide which player “advances” under the contract language. Several result services already had the match listed as live on 30 July, and one source showed a completed scoreline in favour of Preston from the Vancouver event, which would directly explain why Dart is at 0% and why the market may be approaching a settlement outcome rather than a true pre-match opinion.[4][5][6][9] Traders should also monitor whether the relevant round is recorded as finished, because this contract resolves to **50-50** only if the match is cancelled, tied, or delayed beyond seven days without a winner, whereas any completed advancement should settle to one side or the other.[0]

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page reviews Vancouver: Harriet Dart vs Taylah Preston across five venues. The live probability is the Polymarket mid-price, sourced directly from the on-chain Polygon order book; the comparison columns benchmark each venue on fee structure, KYC, settlement currency and payment rails. Every CTA routes to Best Prediction Markets, which mirrors the Polymarket order book at 0% fees.

Resolution & payout

At resolution the UMA oracle takes over: a proposer posts the outcome with a bond, any token holder can dispute within two hours. Without dispute the result is accepted and the smart contract distributes USDC instantly.

On Kalshi (CFTC-regulated) resolution runs through their in-house clearing engine in USD. Betfair Exchange settles after match end in the account's local currency. Manifold pays no cash — only its in-platform "mana" currency.

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.