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, now hinges on a 27% crowd-implied probability that Sema advances. With settlement in USDC and a 50-50 resolution clause for cancellations or delays beyond seven days, the contract mirrors standard on-chain sports derivatives where incomplete matches trigger neutral outcomes rather than voids.

Historically, ITF-level women’s matches with sub-30% implied probabilities for the lower-ranked player often resolve to the favourite when no injury is reported pre-match, as seen in similar 2025 Granby events where walkovers shifted odds by 15–20% within hours. In this case, the 27% figure suggests traders view Brace as the clear favourite, consistent with her recent form on North American hard courts, while Sema’s lower ranking and limited ITF wins in 2026 temper confidence in her advancement.

Traders should monitor the official ITF Granby schedule for any postponement notices or player injury updates, as these directly impact the 50-50 resolution trigger. A recent ITF announcement confirmed the tournament is proceeding without major disruptions, but any late change to the draw or player status could alter settlement dynamics before the 23 July 22:00 UTC deadline.

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Methodology

This page reads ITF Granby: Erika Sema vs Cadence Brace on-chain. Polymarket's quote comes directly from the Polygon order book — the only comparable venue with on-chain settlement. Kalshi (USD, off-chain), Betfair (GBP/EUR, off-chain) and Manifold (play-money) are listed alongside for venue context. Every CTA routes to BTC Prediction, which mirrors the Polymarket order book directly.

Resolution & payout

Settlement is on-chain via UMA Optimistic Oracle. A proposer posts the outcome with a bond, a two-hour dispute window opens, then the smart contract lifts winning conditional tokens to 1 USDC and sends payments to holders' wallets automatically. No withdrawal fees beyond Polygon gas.

Off-chain venues (Kalshi, Betfair, Smarkets) settle in local fiat through bank-side clearing — faster than SWIFT, slower than on-chain. Manifold pays no real cash.

FAQ

What are crypto prediction markets?

Crypto prediction markets are on-chain smart contracts where you buy YES or NO shares on a future crypto event (e.g. "BTC above $100k by year-end"). The market price between 0¢ and 100¢ is the implied probability.

What does a transaction cost on Polygon?

Polygon gas is typically under $0.01 per transaction. A full trade cycle (Approve + Order + Fill) totals around $0.03 — compared to $5-50 on Ethereum mainnet.

How volatile are crypto prediction markets?

Crypto markets react to spot prices — a 5% BTC move typically shifts a "BTC above X by date" market 10-20%. Polymarket crypto market liquidity is usually six-figure USD, sufficient for active trading.

Which crypto markets exist on Polymarket?

Currently active markets include BTC/ETH/SOL price targets, halving dates, ETF approvals, hard-fork outcomes and Layer-2 TVL thresholds. The list updates weekly; biggest volume sits on BTC and ETH price forecasts.

Are crypto prediction markets taxable in the US?

In the US, prediction market gains are typically treated as ordinary income or short-term capital gains depending on holding period. Consult a tax professional for your specific situation — we cannot provide tax advice.