Granby: Keegan Rice vs Arthur Gea

Platform comparison

Market context

Keegan Rice and Arthur Gea are set to face off in a Granby tennis match originally scheduled for 10:00 AM ET on 16 July 2026, with the prediction market currently pricing Rice’s advancement at a 0% implied probability. The event has not yet been played as of the early hours of 17 July, and the market remains open until 23 July 2026 to accommodate potential delays or cancellations.

Historically, prediction markets assigning 0% probability to a player in an upcoming singles match often signal either a withdrawn entry, a severe injury, or a mismatch so stark that bookmakers have effectively removed the contest from active betting. In comparable Challenger-level fixtures, such extreme odds have preceded retirements before the first serve or one-sided victories where the underdog never contested a set. The divergence here is notable: while the prediction market shows 0%, sportsbook lines and head-to-head analytics from TennisTonic still list Gea as the clear favourite but not a guaranteed winner, suggesting the 0% may reflect a liquidity or data-sync issue rather than a definitive real-world outcome[2].

Traders should monitor official tournament updates from the Granby event organisers and player status reports, particularly any late withdrawals or medical suspensions. A recent 365Scores listing confirms the match time as 14:00 local, but no live result is yet posted, indicating the fixture may be pending or delayed[1]. Key catalysts include the official start confirmation, any retirement notices, and whether the match proceeds within the seven-day settlement window. Absence of a confirmed start by 23 July will trigger the 50-50 resolution clause.

Sources: 1 · 2

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 PolyGram, 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 PolyGram. 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.

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.

Do I need to KYC for this market?

On Polymarket directly, no — it's wallet-based. Intermediary brokers like PolyGram trigger KYC only above $1,500 of lifetime trading volume; under that you trade pseudonymously with a single wallet address.

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.