Granby: Yuta Shimizu vs Jay Dylan Friend

Platform comparison

Market context

A tennis match between Yuta Shimizu and Jay Dylan Friend is scheduled for the Granby tournament on 13 July 2026. In prediction markets, traders buy YES or NO shares depending on their view of the outcome. A YES share pays £1 if Shimizu advances; a NO share pays £1 if Friend advances. The current crowd-implied probability of 100% YES reflects an extreme consensus that Shimizu will win, though this reflects limited historical data on both players at this venue and stage of their careers. The settlement window closes on 20 July, allowing a week's buffer for rescheduling; should the match be cancelled outright or delayed beyond seven days without completion, the market resolves 50-50.

Prediction markets on lower-ranked professional tennis matches typically show wide probability ranges when player records are thin or when one competitor has substantially higher ATP rankings. Shimizu and Friend's head-to-head record, recent form on hard courts, and performance in qualifying rounds will anchor rational pricing. A 100% implied probability suggests either a significant ranking disparity, recent dominant form by Shimizu, or sparse trading volume that hasn't yet attracted contrarian interest.

Traders should monitor official ATP and tournament communications for injury withdrawals, schedule changes, or late draws that might alter seeding. Weather delays at the venue could trigger the rescheduling clause. Confirmation of both players' participation and any last-minute ranking updates in early July will be critical signals. The settlement window's seven-day grace period means matches delayed into late July could still resolve to a winner rather than a split.

Methodology

This page is a comparison snapshot: one live quote, four reference venues with their key attributes, and a single execution path — every trade button routes to Prediction Market UK, which mirrors the Polymarket order book directly.

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

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 Prediction Market UK. 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.

How does resolution work?

Through the UMA Optimistic Oracle on Polygon: a proposer submits the outcome, a two-hour challenge window opens, and USDC payouts settle automatically once the result is final.

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.