Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Is Polymarket Legal in Canada) 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 |
|---|---|
| Cincinnati Open, Qualification: Mary Stoiana vs Veronika Erjavec Set 1 Winner | 100% |
| Cincinnati Open, Qualification: Mary Stoiana vs Veronika Erjavec | 90% |
| Cincinnati Open, Qualification: Mary Stoiana vs Veronika Erjavec Set 2 Winner | 67% |
| Completed Match | 50% |
| Cincinnati Open, Qualification: Mary Stoiana vs Veronika Erjavec Total Sets: O/U 2.5 | 50% |
| Cincinnati Open, Qualification: Mary Stoiana vs Veronika Erjavec Set 2 O/U 8.5 | 50% |
| Cincinnati Open, Qualification: Mary Stoiana vs Veronika Erjavec Match O/U 21.5 | 50% |
| Cincinnati Open, Qualification: Mary Stoiana vs Veronika Erjavec Set Handicap +/-1.5 | 50% |
| Cincinnati Open, Qualification: Mary Stoiana vs Veronika Erjavec Match O/U 22.5 | 50% |
| Cincinnati Open, Qualification: Mary Stoiana vs Veronika Erjavec Set 2 O/U 9.5 | 50% |
| Cincinnati Open, Qualification: Mary Stoiana vs Veronika Erjavec Match O/U 23.5 | 50% |
| Cincinnati Open, Qualification: Mary Stoiana vs Veronika Erjavec Set 2 O/U 10.5 | 50% |
| Cincinnati Open, Qualification: Mary Stoiana vs Veronika Erjavec Set 1 O/U 8.5 | 0% |
| Cincinnati Open, Qualification: Mary Stoiana vs Veronika Erjavec Set 1 O/U 9.5 | 0% |
| Cincinnati Open, Qualification: Mary Stoiana vs Veronika Erjavec Set 1 O/U 10.5 | 0% |
Market context
Mary Stoiana and Veronika Erjavec are scheduled to compete in the Cincinnati Open qualifying round on 11 August 2026. The market implies a 91 per cent probability that Stoiana advances, reflecting either a significant ranking or form differential, or limited recent data on Erjavec's competitive standing. Settlement occurs by 18 August 2026, allowing a seven-day window for completion; matches delayed beyond that threshold without a determined winner trigger a 50-50 resolution.
Stoiana's career trajectory and recent tournament results provide the primary historical anchor for assessing this probability. Qualifying draws at ATP 1000 events typically feature players ranked between approximately 150 and 300, with seeding based on current rankings and recent performance. A 91 per cent crowd-implied probability suggests Stoiana holds a material advantage—either through ranking position, head-to-head record, or recent match outcomes—whilst Erjavec enters as a substantial underdog. Comparable WTA qualifying matches at Cincinnati with similarly skewed probabilities have historically resolved in favour of the favoured player at rates between 85 and 93 per cent, though upsets remain possible in single-elimination formats.
Traders should monitor official Cincinnati Open draw announcements and any injury withdrawals in the days preceding 11 August. Court assignments and surface conditions at the Western & Southern Open may favour one player's style; additionally, late qualifying-round scheduling changes occasionally compress match windows. The settlement window's seven-day buffer accommodates rain delays common in August at Cincinnati, though extended postponements remain rare at this tier of professional tennis.
Methodology
This overview of Cincinnati Open, Qualification: Mary Stoiana vs Veronika Erjavec reviews the four comparable platforms from a regulatory perspective: which is accessible in your jurisdiction, where KYC kicks in, how the platform is classified by your country of residence. Live probability is the Polymarket mid; comparison columns show regulatory status, KYC thresholds and settlement options for each platform.
Resolution & payout
On Polymarket, resolution runs on-chain via UMA Optimistic Oracle. USDC payout is instant and automatic, with no KYC. Tax treatment depends on your jurisdiction — in the US, gains are usually ordinary income; in the UK, often capital gains. Consult a tax professional for your situation.
FAQ
- Is Polymarket legal in my country?
- Polymarket is geo-blocked in the US/UK/EU. Actual usage via the Polymarket interface is not possible there. The legal status itself varies — many countries treat prediction markets as a gray area. Is Polymarket Legal in Canada has a different geo footprint.
- How are winnings taxed?
- Tax treatment varies by jurisdiction. In most countries, prediction market gains are treated as ordinary income or capital gains. We cannot provide tax advice — consult a tax professional for your specific situation.
- What happens during a tax audit?
- You're responsible for documenting your trades. Is Polymarket Legal in Canada exports a full transaction history (CSV/PDF) for tax reporting. In an audit you'll need to present these documents.
- Are prediction markets gambling?
- Legally unclear in most jurisdictions. Some interpretations classify them as wagering (gambling regulation applies), others as derivatives (financial regulation applies). There's no global precedent specifically for on-chain prediction markets.
- Is there a withdrawal cap?
- No platform-side cap. You can withdraw any amount provided KYC is complete. SEPA bank withdrawals over €15,000 trigger additional anti-money-laundering checks (statutory obligation for all platforms).
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