ITF Granby: Erika Sema vs Cadence Brace

Platform comparison

Market context

The underlying event is a women’s singles tennis match at the ITF Granby tournament between Erika Sema and Cadence Brace, originally set for 16 July 2026. The market currently implies a 0% chance that Sema advances, suggesting the crowd views Brace as the overwhelming favourite or the match as effectively decided before play.

In lower-tier ITF events, 0% implied probabilities for one player are rare and often signal either a withdrawal, injury, or a pre-match retirement that has not yet been formally recorded. Comparable cases from 2024–2025 ITF Women tournaments show that when odds collapse to near-zero before the first serve, the match frequently resolves as a no-contest or is postponed due to player unavailability, triggering the 50-50 settlement clause rather than a decisive win.

Traders should monitor the official ITF Granby schedule and player status updates for any cancellation notices or withdrawal declarations, as these are the primary catalysts that would shift the market from 0% to 50-50. The tournament’s administrative page and local Canadian tennis news outlets are the most reliable sources for real-time updates on player availability, with any announcement likely to emerge within hours of the scheduled start time.

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Methodology

This page tracks ITF Granby: Erika Sema vs Cadence Brace across four political prediction venues. Live odds come from the Polymarket order book (the deepest political prediction-market book). Kalshi is the CFTC-regulated US alternative, Betfair the established UK sports-exchange with politics markets, Manifold the open play-money variant. For users geo-blocked from Polymarket directly, brokers like Election Predictions UK provide a 0%-fee route into the same order book.

Resolution & payout

For political markets the resolution source is decisive. Polymarket defines a concrete source per contract (e.g. AP, Reuters, official electoral commission) and uses the UMA Optimistic Oracle as the on-chain dispute mechanism. With a clearly defined outcome the USDC payout lands within minutes of the final confirmation.

FAQ

How accurate are political prediction markets?

Historically more accurate than polls. Polymarket's Brier score on US 2024 elections was ~0.11 — better than 538 (~0.14) and every mainstream poll. Markets aggregate information with real skin in the game.

Which platform has the deepest political liquidity?

Polymarket — by far. US 2024 presidential volume was ~$3.5B vs Kalshi (~$200M) and Betfair (~$120M). Where Polymarket is geo-blocked, brokers like Election Predictions UK route into the same order book at 0% fees.

How fast do political markets react to news?

High-liquidity markets move within seconds to minutes. A Trump tweet on the economy can shift the "Trump 2024" market 2-5 points before mainstream media has written anything.

Are political prediction markets legal in my country?

It varies. They sit in legal gray areas in most jurisdictions. Polymarket is geo-blocked from US/UK/EU; some broker frontends have a different geo footprint. Trade only with capital you can afford to lose, and only if you understand the legal status in your jurisdiction.

Why do Polymarket and Kalshi differ on elections?

Kalshi must follow CFTC compliance — strict definitions, clear resolution sources, US citizens only with KYC. Polymarket operates globally without CFTC oversight — deeper liquidity, but also higher regulatory risk.