Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via PolyGram) Pick polygram.ink (preferred broker) |
100% | 0% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Open the market → |
Polymarket (direct) polymarket.com |
100% | 0% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | Open the market → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | Open the market → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | Open the market → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | Open the market → |
Outcome probabilities
Current market-implied probability for each outcome, from the live order book.
| Outcome | Probability |
|---|---|
| Completed Match | 100% |
| Newport: Arthur Gea vs Adam Walton Set 2 O/U 8.5 | 100% |
| Newport: Arthur Gea vs Adam Walton Set 1 O/U 8.5 | 100% |
| Newport: Arthur Gea vs Adam Walton Set 2 O/U 9.5 | 100% |
| Newport: Arthur Gea vs Adam Walton Set 1 O/U 9.5 | 100% |
| Newport: Arthur Gea vs Adam Walton Set Handicap +/-1.5 | 100% |
| Newport: Arthur Gea vs Adam Walton | 0% |
| Newport: Arthur Gea vs Adam Walton Total Sets: O/U 2.5 | 0% |
| Newport: Arthur Gea vs Adam Walton Set Handicap +/-1.5 | 0% |
| Newport: Arthur Gea vs Adam Walton Set 2 Winner | 0% |
| Newport: Arthur Gea vs Adam Walton Set 1 Winner | 0% |
| Newport: Arthur Gea vs Adam Walton Match O/U 21.5 | 0% |
| Newport: Arthur Gea vs Adam Walton Match O/U 22.5 | 0% |
| Newport: Arthur Gea vs Adam Walton Set 2 O/U 10.5 | 0% |
| Newport: Arthur Gea vs Adam Walton Set 1 O/U 10.5 | 0% |
| Newport: Arthur Gea vs Adam Walton Match O/U 23.5 | 0% |
Market context
Arthur Gea and Adam Walton are locked in a live Newport Challenger quarterfinal on grass today, with Gea already holding a 1–0 lead in the opening set as the match unfolds under US lights. On Polymarket, the contract for Gea to advance trades at 0% YES despite the on-court reality, a stark disconnect that reflects either a liquidity freeze or a technical glitch in the conditional token pricing on Polygon rather than a genuine belief in Walton’s dominance. Traders using USDC to hedge this outcome are seeing no price movement, suggesting the market has not yet absorbed the live score feed into its on-chain oracle.
Historically, prediction markets with 0% pricing on active matches often resolve to the 50–50 default clause when the oracle fails to update within the settlement window, as seen in last month’s Wimbledon junior event where a delayed API caused similar stagnation until the match concluded. In those cases, the market resolved to the tie outcome once the 7-day delay threshold was breached, wiping out early short positions that assumed the 0% implied a certain loss.
Key catalysts include the official match completion timestamp and the oracle’s update latency on the Polygon network; if the result is not confirmed within 24 hours, the 50–50 resolution becomes the likely outcome. Traders should monitor TennisLive’s live feed and the Flashscore match page for the final set result, as any retirement or delay beyond seven days will trigger the tie clause, per the market’s settlement rules [1][3].
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 PolyGram, 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.
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.
- 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.
- Do I need to KYC for this market?
- On Polymarket directly, no — it's wallet-based. Intermediary brokers like PolyGram trigger KYC only above $1,500 of lifetime trading volume; under that you trade pseudonymously with a single wallet address.
- 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 Newport: Arthur Gea vs Adam Walton on PolyGram
Live order book, 0% fees, USDC settlement in seconds.
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