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% |
| Segovia: Florent Bax vs Paul Inchauspe Set 1 O/U 8.5 | 100% |
| Segovia: Florent Bax vs Paul Inchauspe Set 2 O/U 8.5 | 100% |
| Segovia: Florent Bax vs Paul Inchauspe Set 1 O/U 9.5 | 100% |
| Segovia: Florent Bax vs Paul Inchauspe Set 1 O/U 10.5 | 100% |
| Segovia: Florent Bax vs Paul Inchauspe Set Handicap +/-1.5 | 100% |
| Segovia: Florent Bax vs Paul Inchauspe | 0% |
| Segovia: Florent Bax vs Paul Inchauspe Total Sets: O/U 2.5 | 0% |
| Segovia: Florent Bax vs Paul Inchauspe Set 1 Winner | 0% |
| Segovia: Florent Bax vs Paul Inchauspe Set 2 Winner | 0% |
| Segovia: Florent Bax vs Paul Inchauspe Match O/U 21.5 | 0% |
| Segovia: Florent Bax vs Paul Inchauspe Set Handicap +/-1.5 | 0% |
| Segovia: Florent Bax vs Paul Inchauspe Match O/U 22.5 | 0% |
| Segovia: Florent Bax vs Paul Inchauspe Set 2 O/U 9.5 | 0% |
| Segovia: Florent Bax vs Paul Inchauspe Match O/U 23.5 | 0% |
| Segovia: Florent Bax vs Paul Inchauspe Set 2 O/U 10.5 | 0% |
Market context
Polymarket is pricing Florent Bax vs Paul Inchauspe at **0% YES** for Bax, which means the contract is effectively saying Bax has no meaningful chance left on the board. On Polymarket, that figure is not a forecast of the tennis itself in the abstract; it is the market price on the conditional token tied to the Segovia match outcome, with settlement in USDC on Polygon and the resolution rule depending on which player advances.[2]
That kind of near-zero print usually appears when the underlying match is already over in practice, when a result has been reported elsewhere, or when trading liquidity is too thin to keep both sides active. Comparable tennis markets often move sharply once pre-match odds and match reporting line up, and Tennis Tonic’s pre-match preview had Paul Inchauspe favoured, listing him as the pick to win and showing shorter odds than Bax.[1] For a trader, the key read is that the market is not merely discounting Bax, but almost fully assigning the opposing outcome unless a late data correction or settlement issue emerges.[1][2]
The main catalysts now are straightforward: official ATP Challenger scheduling, any walkover or retirement notice, and whether the match actually starts or was completed as expected. Polymarket’s own rule set says a pre-start withdrawal resolves to 50-50, while a match that is never played or is delayed beyond seven days without a winner also resolves 50-50, so the practical watchlist is event status rather than live in-play momentum.[2] With the settlement window ending on 29 July 2026, any late administrative update from the tournament can still matter more than pre-match pricing.[2]
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
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.
- 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.
Trade Segovia: Florent Bax vs Paul Inchauspe on PolyGram
Live order book, 0% fees, USDC settlement in seconds.
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