Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Prediction Today) Pick polygram.ink (preferred broker) |
100% | 0% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Live odds → |
Polymarket (direct) polymarket.com |
100% | 0% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | Live odds → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | Live odds → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | Live odds → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | Live odds → |
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
The Ilinca Amariei versus Carmen Andreea Herea qualifying match at the UniCredit Iasi Open is set to begin today at 08:00 UTC on Romania’s Centre Court, with the market currently pricing Amariei’s advancement at a near-certain 100% YES despite betting odds favouring Herea at 1.44 against Amariei’s 2.62[1][2]. This stark divergence between the prediction market’s implied certainty and the bookmakers’ preference for Herea mirrors historical anomalies in WTA qualifiers where late-form players are undervalued by algorithms but trusted by local liquidity, often resolving when a player’s recent surface performance outweighs career head-to-head records[1][7].
Traders should monitor the official WTA tournament scoreboard for any delay or cancellation notices before the 08:00 UTC start, as matches delayed beyond seven days without a winner trigger a 50-50 resolution[2][3]. The primary catalyst is Herea’s superior 2026 win-loss record of 5–3 (63%) compared to Amariei’s 14–15 (48%), a statistical edge that bookmakers have correctly priced but which the prediction market appears to have overlooked, potentially due to a lag in updating recent form data[1][7]. Any announcement confirming the match’s commencement will likely force the market to align with the bookmakers’ implied probability, given the head-to-head is tied at 1–1 and Herea holds the higher career ranking of 527[7][9].
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 Prediction Today, 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
- 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 Prediction Today. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.
- 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.
- 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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