ITF Granby: Erika Sema vs Cadence Brace

Platform comparison

Market context

The ITF Women’s Granby match between Erika Sema and Cadence Brace, originally set for 6:00PM ET on 16 July 2026, has not yet produced a ball in play, leaving the prediction market for Sema to advance at a crowd-implied probability of 0% YES. This near-zero pricing diverges sharply from typical pre-tournament odds where both players hold measurable chances, suggesting the market treats the fixture as effectively void before a single point is contested.

Historical precedents in ITF women’s events show that matches scheduled but never started—due to injury, walkover, or withdrawal—resolve prediction contracts to a 50-50 split, not a full loss for either side. The 0% pricing here implies traders believe the match will not commence, yet the settlement rules explicitly protect against total loss if cancellation occurs before play, creating a misalignment between implied probability and contractual outcome.

Traders should monitor the ITF Granby tournament schedule and player availability updates, particularly any official withdrawals or injury reports posted by the tournament organiser or the ITF. A recent Robinhood Markets prediction-market notice confirms that any pre-match cancellation resolves all contracts to $0.50, reinforcing that the 0% price reflects a belief in non-play rather than a definitive loss for Sema [1]. Until a ball is struck, the market remains in a suspended state where the 50-50 clause dominates the risk profile.

Sources: 1

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

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

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.

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.