Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
PolyGram Pick polygram.ink |
14% | 86% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Open on PolyGram → |
Polymarket polymarket.com |
14% | 86% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | Open on PolyGram → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | Open on PolyGram → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | Open on PolyGram → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | Open on PolyGram → |
Live odds for Polymarket-based markets come from the Polygon order book. Non-Polymarket venues show attributes only; clicking any row opens the market on PolyGram.
Active sub-markets
| West Ham United FC | 14% YES | 86% NO |
| Draw (West Ham United FC vs. Arsenal FC) | 22% YES | 79% NO |
| Arsenal FC | 64% YES | 37% NO |
Market context
West Ham United will host Arsenal at the London Stadium on Sunday, 10 May 2026 in a Premier League fixture. The 14% implied probability for a West Ham victory reflects Arsenal's historical dominance in this fixture and their typical league position relative to West Ham. Arsenal have won 60 of the 186 competitive meetings between the clubs, whilst West Ham have managed 41 victories. Recent seasons show Arsenal finishing consistently higher in the table, though West Ham's home record at the London Stadium has occasionally produced upsets against top-six sides.
The current probability sits notably below West Ham's typical win rates in home fixtures against mid-table or lower-ranked opponents, suggesting the market is pricing in Arsenal's structural advantage. Historical precedent from similar matchups—where lower-positioned sides face established top-four contenders in May—shows win probabilities in the 12–18% range. Team news, injury updates, and final-day league positioning will shape expectations in the weeks before settlement. Arsenal's European commitments and fixture congestion earlier in the season may influence squad rotation decisions by early May.
From a regulatory standpoint, this market operates under different jurisdictional frameworks depending on trader location. German prediction markets fall under GlüStV oversight, which permits licensed operators to offer event contracts. US traders face CFTC restrictions on binary sports contracts, though some platforms operate under exemptions for non-leveraged prediction markets. Many platforms permit trading up to $1,500 without full KYC verification, reducing friction for casual participants in lower-value positions, though settlement and withdrawal typically require identity confirmation.
Methodology
This page reviews West Ham United FC vs. Arsenal FC across five venues. We show live odds for Polymarket-based markets (sourced from the Polygon order book); for other venues we list platform attributes, since the comparable contracts are not exposed via a public API on every venue. Every CTA points at PolyGram — the application we operate, where you trade directly against 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
- 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 it cost to trade on PolyGram?
- Zero. PolyGram routes every order to the live Polymarket order book; the only cost is the Polygon network fee, typically under $0.01 per transaction.
- 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?
- Not under $1,500 of lifetime trading volume. Above that threshold, PolyGram triggers a quick verification flow that finishes in 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.
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