Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Best Prediction Markets) Pick polygram.ink (preferred broker) |
100% | 0% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Live odds → |
Polymarket (direct) polymarket.com |
100% | 0% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | Live odds → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | Live odds → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | Live odds → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | Live odds → |
Outcome probabilities
Current market-implied probability for each outcome, from the live order book.
| Outcome | Probability |
|---|---|
| Completed Match | 100% |
| Vancouver: Maddison Inglis vs Taylah Preston Match O/U 21.5 | 100% |
| Vancouver: Maddison Inglis vs Taylah Preston Set 2 O/U 8.5 | 100% |
| Vancouver: Maddison Inglis vs Taylah Preston Set 1 O/U 8.5 | 100% |
| Vancouver: Maddison Inglis vs Taylah Preston Set Handicap +/-1.5 | 100% |
| Vancouver: Maddison Inglis vs Taylah Preston Set 1 O/U 9.5 | 100% |
| Vancouver: Maddison Inglis vs Taylah Preston Set 1 O/U 10.5 | 100% |
| Vancouver: Maddison Inglis vs Taylah Preston | 0% |
| Vancouver: Maddison Inglis vs Taylah Preston Set 1 Winner | 0% |
| Vancouver: Maddison Inglis vs Taylah Preston Set 2 Winner | 0% |
| Vancouver: Maddison Inglis vs Taylah Preston Total Sets: O/U 2.5 | 0% |
| Vancouver: Maddison Inglis vs Taylah Preston Set Handicap +/-1.5 | 0% |
| Vancouver: Maddison Inglis vs Taylah Preston Match O/U 22.5 | 0% |
| Vancouver: Maddison Inglis vs Taylah Preston Set 2 O/U 9.5 | 0% |
| Vancouver: Maddison Inglis vs Taylah Preston Match O/U 23.5 | 0% |
| Vancouver: Maddison Inglis vs Taylah Preston Set 2 O/U 10.5 | 0% |
Market context
Maddison Inglis and Taylah Preston were scheduled to meet in Vancouver, with the contract still pricing as a complete outlier: the crowd-implied probability sits at **0% YES**, while tennis preview models and bookmaker-style listings point the other way. Tennis.com’s match page gave Preston a **59% projected winner** edge, and Sportus listed Preston around **63%** against Inglis, broadly consistent with other odds screens showing Preston favoured at roughly **1.60** to Inglis at **2.20**.[9][19][18]
That divergence is easier to read in the context of their recent head-to-head and level of competition. The pair have split previous meetings on hard court, with sources recording a **2-1** edge for Inglis overall in one live database and a **1-1** split in another H2H summary, reflecting some data inconsistencies across feeds rather than a settled narrative of dominance.[2][4][7] The most recent completed match listed in these sources was won by Inglis in straight sets in late 2025, but the broader market still leans Preston because she has generally been priced as the stronger player in Vancouver-style preview markets.[2][9]
For traders, the key catalysts are straightforward: confirm the match actually starts, then watch for any draw changes, walkovers, or schedule slippage at the event site. The market description is explicit that if the match is not played, ends tied, or is delayed more than seven days without a winner, it resolves 50-50, so late tournament weather, court rescheduling, or a withdrawal would matter more here than a normal pre-match line move. Flashscore and other live score feeds were already carrying the fixture, which suggests the main risk is operational rather than informational if the event timetable changes again.[1][8]
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, 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
- 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 Best Prediction Markets. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.
- 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.
- 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.
- What does Polymarket cost to trade?
- Polymarket itself charges 0% — the only cost is the Polygon network fee, typically under $0.01 per transaction. Off-chain venues like Kalshi or Betfair charge 2-7% commission.
- 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.
Trade Vancouver: Maddison Inglis vs Taylah Preston on Best Prediction Markets
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