Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
PolyGram Pick polygram.ink |
0% | 100% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Open on PolyGram → |
Polymarket polymarket.com |
0% | 100% | 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
Market context
Petra Marcinko’s match with Yelyzaveta Kotliar in Rabat is priced on Polymarket at 0% YES, which means the contract is effectively assuming no settlement to a named winner unless fresh flow arrives. On the usual Polymarket structure, traders are buying and selling conditional tokens settled in USDC on Polygon, so the key question is whether the match is actually completed and recorded within the settlement window, rather than the wider tournament narrative.
The market should be read against the small set of available form signals. Tennis Tonic’s match preview favoured Marcinko to win in straight sets, while ProTipster’s snapshot also leaned towards Marcinko on basic match and set metrics. That said, the live market is not pricing a heavy favourite into the contract at present, which is often more a reflection of thin liquidity or stale order flow than a firm view on the tennis itself. Where a market sits at 0% despite a scheduled match, comparable cases often turn on whether traders are confident the event will start and finish cleanly.
The main catalysts are administrative rather than tactical: the official WTA order of play, any court reassignment, weather disruption in Rabat, and whether either player withdraws before or during the match. Kalshi’s listing confirms the fixture is the WTA Rabat round of 16, but Polymarket resolution still depends on an actual winner advancing, with a tie, no play, or a delay beyond seven days resolving 50-50. The practical watchpoint is whether the match is completed and reported inside that window, as that is what ultimately drives the conditional tokens to one side or the other.
Methodology
We track GP SAR La Princesse Lalla Meryem: Petra Marcinko vs Yelyzaveta Kotliar 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
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?
- PolyGram is available in most jurisdictions where Polymarket isn't directly accessible. Polymarket itself is geo-blocked in the US/UK/EU. Always check local regulations.
- 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 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.
- 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.
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