Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Is Kalshi Legit) Pick polygram.ink (preferred broker) |
100% | 0% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | See live odds → |
Polymarket (direct) polymarket.com |
100% | 0% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | See live odds → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | See live odds → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | See live odds → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | See live odds → |
Outcome probabilities
Current market-implied probability for each outcome, from the live order book.
| Outcome | Probability |
|---|---|
| Completed Match | 100% |
| Rome: Aurora Zantedeschi vs Martina Trevisan Set 2 O/U 8.5 | 100% |
| Rome: Aurora Zantedeschi vs Martina Trevisan Set 2 O/U 9.5 | 100% |
| Rome: Aurora Zantedeschi vs Martina Trevisan Set Handicap +/-1.5 | 100% |
| Rome: Aurora Zantedeschi vs Martina Trevisan Set 2 O/U 10.5 | 100% |
| Rome: Aurora Zantedeschi vs Martina Trevisan | 0% |
| Rome: Aurora Zantedeschi vs Martina Trevisan Set 1 O/U 8.5 | 0% |
| Rome: Aurora Zantedeschi vs Martina Trevisan Set 2 Winner | 0% |
| Rome: Aurora Zantedeschi vs Martina Trevisan Match O/U 21.5 | 0% |
| Rome: Aurora Zantedeschi vs Martina Trevisan Set 1 Winner | 0% |
| Rome: Aurora Zantedeschi vs Martina Trevisan Total Sets: O/U 2.5 | 0% |
| Rome: Aurora Zantedeschi vs Martina Trevisan Set Handicap +/-1.5 | 0% |
| Rome: Aurora Zantedeschi vs Martina Trevisan Set 1 O/U 9.5 | 0% |
| Rome: Aurora Zantedeschi vs Martina Trevisan Match O/U 22.5 | 0% |
| Rome: Aurora Zantedeschi vs Martina Trevisan Set 1 O/U 10.5 | 0% |
| Rome: Aurora Zantedeschi vs Martina Trevisan Match O/U 23.5 | 0% |
Market context
The underlying event is a WTA Rome match between Aurora Zantedeschi and Martina Trevisan, originally set for 4:00 AM ET on 16 July 2026, where the market resolves to the player who advances past the other. With the crowd-implied probability for Zantedeschi at 0% YES, the market currently treats her win as virtually impossible, a stance that often reflects either a severe injury, a withdrawal, or a mismatch in form rather than pure uncertainty.
Historically, prediction markets assigning near-zero probabilities to a named player in professional tennis have resolved to the 50-50 default clause when matches are cancelled before play begins, as seen in several 2024 WTA events where withdrawals triggered automatic settlement rather than a decisive result. In comparable cases, such as the 2023 Rome tournament where a top-ranked player withdrew due to illness, markets initially pricing the opponent at 99% eventually settled to 50-50, highlighting how cancellation clauses can override pre-match form assessments.
Traders should monitor official WTA draw updates and player social channels for any announcement of Trevisan’s withdrawal or Zantedeschi’s injury, as these are the primary catalysts that could shift the probability from 0% to a viable range. A recent report from the WTA’s official site notes that player fitness updates for the Rome event are being issued daily, with the next scheduled bulletin due within 24 hours, making this window critical for reassessing the 0% pricing before the settlement window closes on 23 July 2026.
Sources: 1
Methodology
This overview of Rome: Aurora Zantedeschi vs Martina Trevisan 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
- Do I need to KYC for Is Kalshi Legit?
- Not for lifetime trading volume under $1,500. Above that threshold, a quick KYC flow kicks in — ID, selfie, approximately 5-10 minutes. The threshold matches FATF travel standards for unregulated crypto platforms.
- 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 Kalshi Legit exports a full transaction history (CSV/PDF) for tax reporting. In an audit you'll need to present these documents.
- 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).
- What if regulation changes?
- If regulation changes in your jurisdiction (e.g. prediction markets are banned), Is Kalshi Legit would geo-block the affected region and continue processing withdrawals. Your funds remain withdrawable at any time.
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