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 contest now effectively postponed as today is 17 July. The prediction market for Rice advancing currently carries a crowd-implied probability of 0% YES, a stark divergence from typical sportsbook lines where Rice would likely hold a measurable edge given his recent form. This near-zero pricing mirrors historical cases where matches were delayed beyond the settlement window or where one player withdrew before play, triggering a 50-50 resolution rather than a decisive outcome.

Traders should monitor official tournament announcements from the Granby event organisers and player schedule updates for both Rice and Gea, as any confirmation of cancellation or delay beyond seven days will force the market to settle at parity. Recent head-to-head data shows Gea holds a slight advantage in their limited encounters, with one source noting a 2-0 record in Gea’s favour, though this stat may be skewed by the small sample size [2]. The primary catalyst remains the tournament’s decision on whether to reschedule the match within the seven-day window, a dependency that directly determines whether the 0% probability holds or shifts to the default 50-50 outcome.

No formal withdrawal has been announced yet, but the absence of live coverage or updated odds on major sportsbooks suggests the match may not proceed as planned [1]. Until the Granby committee confirms a new date or declares the match void, the market’s 0% pricing reflects a high likelihood of non-completion rather than a genuine assessment of Rice’s on-court capability against Gea.

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 Best Prediction Markets UK, which mirrors the Polymarket order book directly.

Resolution & payout

At resolution the UMA oracle takes over: a proposer posts the outcome with a bond, any token holder can dispute within two hours. Without dispute the result is accepted and the smart contract distributes USDC instantly.

On Kalshi (CFTC-regulated) resolution runs through their in-house clearing engine in USD. Betfair Exchange settles after match end in the account's local currency. Manifold pays no cash — only its in-platform "mana" currency.

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 Best Prediction Markets UK. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.

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.

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.

Do I need to KYC for this market?

On Polymarket directly, no — it's wallet-based. Intermediary brokers like Best Prediction Markets UK 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.