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 | Trade this market → |
Polymarket (direct) polymarket.com |
100% | 0% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | Trade this market → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | Trade this market → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | Trade this market → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | Trade this market → |
Outcome probabilities
Current market-implied probability for each outcome, from the live order book.
| Outcome | Probability |
|---|---|
| AS Roma (-1.5) | 100% |
| AS Roma (-2.5) | 100% |
| O/U 0.5 | 100% |
| O/U 1.5 | 100% |
| O/U 2.5 | 100% |
| O/U 3.5 | 100% |
| O/U 4.5 | 100% |
| Both Teams to Score | 100% |
| 1st Half O/U 0.5 | 100% |
| Newport County O/U 0.5 | 100% |
| AS Roma O/U 0.5 | 100% |
| AS Roma O/U 1.5 | 100% |
| AS Roma O/U 2.5 | 100% |
| AS Roma 1st Half O/U 0.5 | 100% |
| Both Teams to Score in Second Half | 100% |
| 2nd Half O/U 0.5 | 100% |
| 2nd Half O/U 1.5 | 100% |
| 2nd Half O/U 2.5 | 100% |
| Newport County 2nd Half O/U 0.5 | 100% |
| AS Roma 2nd Half O/U 0.5 | 100% |
| AS Roma 2nd Half O/U 1.5 | 100% |
| Newport County (-1.5) | 0% |
| Newport County (-2.5) | 0% |
| O/U 5.5 | 0% |
| Both Teams to Score in First Half | 0% |
| 1st Half O/U 1.5 | 0% |
| 1st Half O/U 2.5 | 0% |
| Newport County O/U 1.5 | 0% |
| Newport County O/U 2.5 | 0% |
| Newport County 1st Half O/U 0.5 | 0% |
| Newport County 1st Half O/U 1.5 | 0% |
| AS Roma 1st Half O/U 1.5 | 0% |
| Newport County 2nd Half O/U 1.5 | 0% |
Market context
Newport County vs AS Roma is a club friendly, and Polymarket is pricing the contract at **0% YES** right now, which means the market is treating the listed “more markets” angle as effectively dead money on the current information set. Because this is a cash-settled Polymarket contract backed by USDC on Polygon and resolved through conditional tokens, the last hours before the 18:00Z settlement window matter more than the pre-match narrative: if the contract’s defining condition is not met exactly as the market rules require, the token resolves to zero regardless of broader match colour.
Comparable pre-match previews were heavily Roma-leaning, with Sports Mole putting Roma at 51.78% to win and giving 0-1 the single most likely scoreline, while Sportskeeda also called Roma to win 0-1 and expected under 2.5 goals.[11][1] That is the kind of backdrop that usually leaves little room for niche side markets unless the contract is tied to a very specific in-play or statistical trigger. For traders reading the tape, a 0% crowd-implied price usually reflects either a mismatched market definition, a condition already made impossible by the clock, or a consensus that the trigger is so unlikely that even a late information shock would not be enough to reprice it materially.
The main catalysts are straightforward: final team news, whether either club changes its friendly schedule or squad plan, and any official pre-match confirmation that alters the relevant condition before kickoff. Oddslot listed the fixture for 18:00 GMT, while ESPN’s match record shows the game was played and finished 1-4 to Roma, which can matter if the market’s settlement depends on a specific stat line rather than the final score alone.[5][20] On Polymarket, the practical watchpoint is whether any delayed data feed, line-up release, or rules clarification changes the conditional token outcome before resolution; once the settlement criteria are fixed, the USDC position is just waiting on the oracle-style result.
Methodology
Methodologically we separate two layers: the live probability (Polymarket mid-price) and the platform attributes (fee, KYC, settlement currency, payment rails). That keeps the comparison honest — a single canonical probability across the row, with the venue-by-venue trade-offs spelt out in the columns next to it.
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 PolyGram. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.
- 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.
- 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.
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