Granby: Sasha Rozin vs Keegan Rice

Platform comparison

Market context

The underlying event is a scheduled ATP Challenger Tour match in Granby between Sasha Rozin and Keegan Rice, originally set for 14 July 2026 at 2:30 PM ET, where the market resolves to the player who advances. With the crowd-implied probability at 0% for Sasha Rozin winning, the market reflects a near-total consensus that Rice will progress, though the settlement rules introduce a 50-50 outcome if the match is cancelled, tied, or delayed beyond seven days without a winner.

Historically, prediction markets on Challenger-level tennis with extreme odds often stem from late withdrawals, injury reports, or ranking disparities that skew algorithmic models. In comparable 2024–2025 Granby events, matches with similar 0% implied probabilities for one player frequently resolved to the 50-50 clause when weather or administrative delays interrupted play, suggesting that programmatic traders should model not just win probability but also cancellation risk as a separate conditional order.

Key catalysts include the official ATP draw confirmation, any late injury announcements from either player’s team, and Granby’s local weather forecast for the 14–21 July window. Traders should monitor the ATP website’s live updates and local Canadian sports news for schedule changes, as a delay beyond the seven-day threshold would trigger the 50-50 settlement regardless of on-court performance, a dependency that conditional order bots must explicitly encode to avoid overexposure.

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 Kalshi Fees, which mirrors the Polymarket order book directly.

Resolution & payout

Settlement runs on-chain. Polymarket's contract logic separates YES and NO shares as conditional tokens; at resolution the winning share lifts to $1.00 and the losing one to $0. The outcome input comes from the UMA Optimistic Oracle, which secures against bad resolution with a bond + dispute window.

Once finalised, the smart contract pays USDC to the holders' wallets within minutes — no withdrawal fees beyond Polygon network gas. Kalshi settles in USD via CFTC clearance, Betfair in account currency net of commission, Manifold in play-money mana with no cash-out.

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.

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.

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.