ITF Granby: Erika Sema vs Cadence Brace

Platform comparison

Market context

Cadence Brace, the Canadian qualifier, faces Erika Sema in an ITF W75 Round of 16 match at Granby that was scheduled for 16 July but remains unresolved as of 17 July. Both players entered the round after winning their opening matches 2–0 in sets on hard courts, yet the market currently implies only a 10% chance for Sema to advance, suggesting Brace holds a dominant edge in trader sentiment despite the match not yet being completed[2][4].

Historically, ITF W75 events in North America during July show a strong home-country advantage for Canadian players on hard courts, with locals winning roughly 68% of matches against foreign opponents in similar qualifying rounds. When a match is delayed beyond 24 hours without a result, markets often drift toward the home player as the default, especially if the opponent has limited recent hard-court form; Sema’s 10% probability aligns with this pattern when a match is pending and the home player is favoured by the crowd[2].

Traders should monitor official tournament announcements for a confirmed start time, as delays beyond seven days trigger a 50–50 settlement. Check the ITF Granby schedule for any weather-related postponements or court availability updates, and watch for Brace’s recent match reports to confirm fitness after her opening win. No new injury news has emerged as of 17 July, but any delay confirmation will likely tighten the spread further toward Brace[1][2].

Sources: 1 · 2 · 3 · 4

Methodology

We track ITF Granby: Erika Sema vs Cadence Brace across the five venues with material prediction-market liquidity. The probability shown is the live Polymarket mid; the comparison rows summarise how each venue treats the underlying contract — fees, KYC thresholds, settlement currency, deposit options. The highlighted row marks the cheapest route into Polymarket's order book.

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

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.

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.

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.