Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Sport Prediction Pick polygram.ink |
100% | 0% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Open on Sport Prediction → |
Polymarket polymarket.com |
100% | 0% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | Open on Sport Prediction → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | Open on Sport Prediction → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | Open on Sport Prediction → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | Open on Sport Prediction → |
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 Sport Prediction.
Active sub-markets
| Grass Court Championships: Linda Noskova vs Paula Badosa Set 1 Winner | 100% Noskova | 0% Badosa |
| Grass Court Championships: Linda Noskova vs Paula Badosa Set 2 O/U 9.5 | 0% Over | 100% Under |
| Grass Court Championships: Linda Noskova vs Paula Badosa Set 2 O/U 10.5 | 0% Over | 100% Under |
| Completed Match | 100% YES | 0% NO |
| Grass Court Championships: Linda Noskova vs Paula Badosa Set 2 O/U 8.5 | 100% Over | 0% Under |
| Grass Court Championships: Linda Noskova vs Paula Badosa Set 1 O/U 8.5 | 0% Over | 100% Under |
Market context
Linda Noskova’s meeting with Paula Badosa is being priced as a Noskova lean, even though the market is currently all the way at 100% for Noskova. That is a much stronger signal than the external pre-match reads, which generally point to Noskova as the more stable grass-court profile: she is the younger, higher-powered server and has typically translated first-strike tennis onto quicker surfaces more cleanly than Badosa. The main comparable result in their recent head-to-head picture also sits with Noskova, who beat Badosa in straight sets in Abu Dhabi, a useful reminder that this is not a one-way stylistic mismatch even if form lines can shift quickly on grass.[3][4]
For traders, the key watch-points are whether the WTA order of play stays intact and whether either camp issues any last-minute fitness update, because Badosa’s market case is most sensitive to movement, back or recovery-related limitations, while Noskova’s edge is more dependent on a clean serve day than on long rallies.[1][3] The official resolution source is the WTA Tour, and the market also allows a 50-50 outcome if the match is washed out, cancelled, or pushed beyond the seven-day window without a winner, so schedule slippage matters as much as on-court form in settlement terms.[1] A live match listing currently places the start in Berlin at about 11:05 UTC, which is close enough to the original slot to suggest the main risk is not a full re-set of the tie, but the usual grass-court dependence on weather and court timing.[6]
Methodology
We track Grass Court Championships: Linda Noskova vs Paula Badosa on the five venues with material liquidity for prediction markets. Live odds come from the Polymarket Polygon order book — the only source that ships real-time data under an open licence. For Kalshi, Betfair and Manifold we list platform attributes (fee, KYC, settlement, payment) instead of fabricated odds, because their APIs use non-comparable contract definitions.
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
- Where can I trade this market with the lowest fees?
- On Sport Prediction, which mirrors the Polymarket order book at 0% fees. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.
- 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 Sport Prediction?
- Zero. Sport Prediction 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.
- 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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