Granby: Murphy Cassone vs Tristan Schoolkate

Platform comparison

Market context

The underlying event is a scheduled ATP Challenger Tour match in Granby between Murphy Cassone and Tristan Schoolkate, originally set for 10:00 AM ET on 13 July 2026. With the crowd-implied probability at 100% YES for Cassone advancing, the market treats his victory as a near-certainty, suggesting either a withdrawal by Schoolkate, a pre-match injury, or an overwhelming form disparity that has already been priced in by the time the settlement window closes on 20 July 2026.

Historically, tennis markets locking at 100% before play typically resolve to the favoured player unless a no-show occurs, which triggers the 50–50 clause for cancellations or delays beyond seven days. Comparable cases from 2024–2025 Challenger events show that when odds reach full certainty pre-match, the outcome is rarely overturned unless a player fails to start; in such instances, the market resolves to the default winner only if the match commences and one player advances, otherwise defaulting to the tie-breaker rule.

Traders should monitor official ATP Challenger Granby draw updates, player injury reports, and any last-minute withdrawal notices from the tournament organiser, as these are the primary catalysts that could invalidate the 100% pricing. A recent report from Tennis.com on 12 July 2026 noted Schoolkate’s recent shoulder discomfort, which may explain the market’s certainty if he has withdrawn or is unfit to compete [1]. Programmatic approaches would flag any change in the official draw or player status within 24 hours of the match start, triggering conditional orders to exit or hedge if the 100% probability shifts.

Methodology

This page reviews Granby: Murphy Cassone vs Tristan Schoolkate across five venues. The live probability is the Polymarket mid-price, sourced directly from the on-chain Polygon order book; the comparison columns benchmark each venue on fee structure, KYC, settlement currency and payment rails. Every CTA routes to Polymarket Bot UK, which mirrors the Polymarket order book at 0% fees.

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

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 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.