Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Kalshi vs Polymarket) Pick polygram.ink (preferred broker) |
100% | 0% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | View on Polymarket → |
Polymarket (direct) polymarket.com |
100% | 0% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | View on Polymarket → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | View on Polymarket → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | View on Polymarket → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | View on Polymarket → |
Outcome probabilities
Current market-implied probability for each outcome, from the live order book.
| Outcome | Probability |
|---|---|
| Targu Mures: Laura Samson vs Mia Ristic | 100% |
| Completed Match | 100% |
| Targu Mures: Laura Samson vs Mia Ristic Set 1 Winner | 100% |
| Targu Mures: Laura Samson vs Mia Ristic Set 1 O/U 8.5 | 100% |
| Targu Mures: Laura Samson vs Mia Ristic Total Sets: O/U 2.5 | 100% |
| Targu Mures: Laura Samson vs Mia Ristic Set 2 O/U 8.5 | 100% |
| Targu Mures: Laura Samson vs Mia Ristic Match O/U 21.5 | 100% |
| Targu Mures: Laura Samson vs Mia Ristic Set 1 O/U 9.5 | 100% |
| Targu Mures: Laura Samson vs Mia Ristic Match O/U 22.5 | 100% |
| Targu Mures: Laura Samson vs Mia Ristic Set 2 O/U 9.5 | 100% |
| Targu Mures: Laura Samson vs Mia Ristic Set 1 O/U 10.5 | 100% |
| Targu Mures: Laura Samson vs Mia Ristic Match O/U 23.5 | 100% |
| Targu Mures: Laura Samson vs Mia Ristic Set 2 Winner | 0% |
| Targu Mures: Laura Samson vs Mia Ristic Set Handicap +/-1.5 | 0% |
| Targu Mures: Laura Samson vs Mia Ristic Set Handicap +/-1.5 | 0% |
| Targu Mures: Laura Samson vs Mia Ristic Set 2 O/U 10.5 | 0% |
Market context
Laura Samson and Mia Ristic are playing a WTA 125 quarter-final in Târgu Mureş, and the market is pricing Samson as the clear favourite after she was listed at around 1.70–1.73 on sportsbook boards, which implies roughly 58–59% before margin is stripped out.[4][15][14] That is materially lower than the contract’s current 100% YES reading, so the prediction market is sitting far above both the bookmaker line and the live analytic consensus. TennisTemple’s pre-match model put Samson at 73.7% against 26.3% for Ristic, while the head-to-head data shown by TennisStats has Ristic 1–0 in meetings, with a straight-sets win in August 2023.[2][8]
The historical frame is straightforward: when a favourite is only modestly better priced by bookmakers but the contract trades at a virtual certainty, the market is usually reflecting either a live score that has already swung decisively or an expectation that the match has effectively been settled by the time the contract updates. That matters here because multiple feeds show the contest as live or already underway on 31 July, with 365Scores and SofaScore both listing the match in progress at Court 3 and WTA marking it as a quarter-final on the day’s schedule.[1][7][12] In other words, the 100% reading is much more consistent with a near-complete in-play position than with a pre-match view of the matchup itself.
For traders, the key catalysts are match completion, retirement language, and any schedule slippage. The contract only stays binary if a winner is officially recorded; if the match is abandoned, cancelled, or left unresolved beyond seven days from the scheduled date, it settles 50-50 under the market rules. The main things to watch are the WTA live scoring page, official order-of-play updates, and any retirement or walkover notation, since those are the events most likely to override the straightforward Samson-versus-Ristic price comparison.[12][13][17]
Methodology
We track Targu Mures: Laura Samson vs Mia Ristic across the five venues with material prediction-market liquidity. The probability shown is the live Polymarket mid; the comparison rows summarise how each venue treats the underlying contract — fees, KYC thresholds, settlement currency, deposit options. The highlighted row marks the cheapest route into Polymarket's order book.
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?
- Polymarket is geo-blocked in the US/UK/EU. The easiest 0%-fee broker into the same order book is Kalshi vs Polymarket. 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.
- 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.
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