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 16 July 2026 at 6:00PM ET, now carries a crowd-implied probability of just 1% for Sema advancing. This starkly low figure suggests the market views Brace as the overwhelming favourite, a sentiment that diverges sharply from typical sportsbook lines for ITF-level contests, where underdogs often retain 10–20% implied win probability. Historical data from similar Granby tournaments shows that when prediction markets assign single-digit probabilities to a player, the outcome usually aligns with the consensus unless a late injury or withdrawal occurs, making this 1% line an outlier even for lower-tier women’s tennis.

Traders should monitor official ITF Granby schedule updates and player injury reports, as any delay beyond seven days from the original date would trigger a 50–50 resolution under the market’s terms. Recent coverage from Tennis Canada notes that Brace has been in strong form ahead of the North American summer circuit, while Sema’s recent match history includes multiple early exits in ITF events, reinforcing the market’s bearish stance [1]. With the settlement window closing on 23 July 2026, the primary catalyst remains whether the match is played as scheduled; any cancellation or postponement would reset the odds entirely, creating a binary risk-reward profile distinct from standard win/loss contracts.

The 1% probability also contrasts with analyst consensus on Brace’s set-winning likelihood, which typically hovers around 75–80% in comparable matchups, suggesting the prediction market may be overreacting to Sema’s recent form. On best-prediction-markets.com, this contract stands out for its extreme divergence from cross-platform odds, offering a clear case study in how crowd sentiment can compress underdog value far below historical norms in ITF women’s tennis.

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, 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

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. 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.

Do I need to KYC for this market?

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