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 |
|---|---|
| Iasi Open, Qualification: Ilinca Amariei vs Carmen Andreea Herea | 100% |
| Completed Match | 100% |
| Iasi Open, Qualification: Ilinca Amariei vs Carmen Andreea Herea Set 1 O/U 8.5 | 100% |
| Iasi Open, Qualification: Ilinca Amariei vs Carmen Andreea Herea Set 2 Winner | 100% |
| Iasi Open, Qualification: Ilinca Amariei vs Carmen Andreea Herea Total Sets: O/U 2.5 | 100% |
| Iasi Open, Qualification: Ilinca Amariei vs Carmen Andreea Herea Set 2 O/U 8.5 | 100% |
| Iasi Open, Qualification: Ilinca Amariei vs Carmen Andreea Herea Match O/U 21.5 | 100% |
| Iasi Open, Qualification: Ilinca Amariei vs Carmen Andreea Herea Set 2 O/U 9.5 | 100% |
| Iasi Open, Qualification: Ilinca Amariei vs Carmen Andreea Herea Match O/U 22.5 | 100% |
| Iasi Open, Qualification: Ilinca Amariei vs Carmen Andreea Herea Match O/U 23.5 | 100% |
| Iasi Open, Qualification: Ilinca Amariei vs Carmen Andreea Herea Set 1 Winner | 0% |
| Iasi Open, Qualification: Ilinca Amariei vs Carmen Andreea Herea Set Handicap +/-1.5 | 0% |
| Iasi Open, Qualification: Ilinca Amariei vs Carmen Andreea Herea Set 1 O/U 9.5 | 0% |
| Iasi Open, Qualification: Ilinca Amariei vs Carmen Andreea Herea Set 1 O/U 10.5 | 0% |
| Iasi Open, Qualification: Ilinca Amariei vs Carmen Andreea Herea Set 2 O/U 10.5 | 0% |
Market context
Polymarket is currently pricing Ilinca Amariei to advance against Carmen Andreea Herea at about **87% YES**, which implies a relatively lopsided view in a one-off WTA qualifying match settled in USDC on Polygon through conditional tokens. That level is consistent with Amariei being the stronger-side favourite in the market, while still leaving room for normal tennis volatility on clay and the possibility of an upset, retirement, or settlement edge case if the match is not completed.
The broader frame is that this is not a standalone championship spot but a qualifying tie in Iasi, where small differences in current form and draw context tend to matter more than season-long reputation. Available market and score-tracking pages show Amariei has already been active in the event, including a qualifying win over Caroline Werner, while Herea is listed as the final-round opponent on 13 July at the Iasi venue.[3][2] Head-to-head data sources also show the pairing as close enough historically to stop this from becoming a pure coin flip, even if the live price leans strongly towards Amariei.[8]
For traders, the practical catalysts are straightforward: official order-of-play updates, any delay to the Centre Court schedule in Iasi, and whether the match starts and reaches completion inside the market’s seven-day settlement window. Tournament listings place the match on clay in Iasi, Romania, and live-scoring pages confirm the scheduled start time, so the main risk is not ambiguity about the fixture but execution risk around postponement, retirement, or no contest outcomes, all of which can push the contract towards the market’s fallback rules.[5][7][4]
Methodology
This page reviews Iasi Open, Qualification: Ilinca Amariei vs Carmen Andreea Herea across five venues. The live probability is the Polymarket mid-price, sourced directly from the on-chain Polygon order book; the comparison columns benchmark each venue on fee structure, KYC, settlement currency and payment rails. Every CTA routes to PolyGram, which mirrors the Polymarket order book at 0% fees.
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
- 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.
- 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 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 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.
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