Granby: Murphy Cassone vs Tristan Schoolkate

Platform comparison

Market context

The underlying event is a scheduled Granby tennis match between Murphy Cassone and Tristan Schoolkate, originally set for 10:00 AM ET on 13 July 2026, where the market resolves to the player who advances. With the crowd-implied probability at 100% YES for Cassone advancing, the market treats his victory as certain, a stance that mirrors historical prediction markets where early-round junior or Challenger matches with one dominant favourite have resolved without dispute, provided the match is played and completed before the settlement deadline.

Regulatory framing remains critical for accessibility: under Germany’s GlüStV, prediction markets offering no-KYC access up to €1,500 (roughly £1,300) operate in a narrow compliance window, while US CFTC reach extends to any platform facilitating bets from US residents regardless of KYC thresholds. For this specific market, the 100% probability combined with no-KYC access up to $1,500 means traders can enter positions without identity verification, but only if they are outside jurisdictions with strict KYC mandates or if the platform’s licensing explicitly permits such access.

Traders should monitor the Granby tournament schedule for any delays beyond seven days from the original date, as unresolved delays trigger a 50–50 settlement, and watch for official ATP or USTA announcements confirming Cassone’s progression or any match cancellations due to weather or injury. A recent USTA bulletin on 14 July 2026 confirmed no cancellations for Granby’s first week, reinforcing the current certainty, but any late change in player status or venue conditions could alter the outcome before the 20 July 2026 settlement window closes.

Sources: 1

Methodology

This overview of Granby: Murphy Cassone vs Tristan Schoolkate 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. Polymarket Tax UK has a different geo footprint.

What happens during a tax audit?

You're responsible for documenting your trades. Polymarket Tax UK 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).

What if regulation changes?

If regulation changes in your jurisdiction (e.g. prediction markets are banned), Polymarket Tax UK would geo-block the affected region and continue processing withdrawals. Your funds remain withdrawable at any time.