Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Kalshi vs Polymarket) Pick polygram.ink (preferred broker) |
100% | 0% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | View on Polymarket → |
Polymarket (direct) polymarket.com |
100% | 0% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | View on Polymarket → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | View on Polymarket → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | View on Polymarket → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | View on Polymarket → |
Outcome probabilities
Current market-implied probability for each outcome, from the live order book.
| Outcome | Probability |
|---|---|
| O/U 0.5 | 100% |
| O/U 1.5 | 100% |
| O/U 2.5 | 100% |
| Both Teams to Score | 100% |
| Both Teams to Score in First Half | 100% |
| 1st Half O/U 0.5 | 100% |
| 1st Half O/U 1.5 | 100% |
| Chelsea FC O/U 0.5 | 100% |
| Tottenham Hotspur O/U 0.5 | 100% |
| Tottenham Hotspur O/U 1.5 | 100% |
| Chelsea FC 1st Half O/U 0.5 | 100% |
| Tottenham Hotspur 1st Half O/U 0.5 | 100% |
| 2nd Half O/U 0.5 | 100% |
| Tottenham Hotspur 2nd Half O/U 0.5 | 100% |
| Chelsea FC (-1.5) | 0% |
| Tottenham Hotspur (-1.5) | 0% |
| Chelsea FC (-2.5) | 0% |
| Tottenham Hotspur (-2.5) | 0% |
| O/U 3.5 | 0% |
| O/U 4.5 | 0% |
| O/U 5.5 | 0% |
| 1st Half O/U 2.5 | 0% |
| Chelsea FC O/U 1.5 | 0% |
| Chelsea FC O/U 2.5 | 0% |
| Tottenham Hotspur O/U 2.5 | 0% |
| Chelsea FC 1st Half O/U 1.5 | 0% |
| Tottenham Hotspur 1st Half O/U 1.5 | 0% |
| Both Teams to Score in Second Half | 0% |
| 2nd Half O/U 1.5 | 0% |
| 2nd Half O/U 2.5 | 0% |
| Chelsea FC 2nd Half O/U 0.5 | 0% |
| Chelsea FC 2nd Half O/U 1.5 | 0% |
| Tottenham Hotspur 2nd Half O/U 1.5 | 0% |
Market context
Chelsea FC face Tottenham Hotspur in a club friendly scheduled for 1 August, and the contract’s **0% YES** price sits well below the range implied by conventional match markets. Recent sportsbook comparison pages show Chelsea as a narrow favourite around the low- to mid-1.90s in decimal terms, with Tottenham typically priced between about 3.40 and 3.80 and the draw near 3.6 to 3.9, which implies a far higher chance of some priced outcome than the prediction market is currently assigning to “More markets” on this specific contract.[11][13]
That gap matters because cross-platform comparison usually turns on what “more markets” includes rather than the 1x2 result itself. Comparable Chelsea-Tottenham previews from late 2025 and spring 2026 consistently treated the fixture as competitive, with analyst picks split between Chelsea, Tottenham, and the draw, and some modelled win probabilities for Chelsea clustered around 40-45% rather than anything near zero.[2][18][20] In other words, the current crowd price looks less like a view on the match and more like a statement that no additional market category will be posted or resolved within the settlement window.
The main catalysts to watch are lineup and competition announcements, plus any change to the friendly schedule or market definition before settlement at 2026-08-01T09:45:00Z. Preseason fixtures often move on late team-news, rest decisions, and whether clubs use rotated squads, so a final matchday bulletin from either side can matter more than historical head-to-heads.[7][8] If the event is reclassified, delayed, or if the platform lists additional sub-markets tied to the fixture, the contract’s implied probability can move quickly from a dead price to one that tracks the sportsbook consensus more closely.[1][11]
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 Kalshi vs Polymarket, 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
- 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.
- 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.
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