ITF Granby: Erika Sema vs Cadence Brace

Platform comparison

Market context

The underlying event is the ITF Women’s Granby match between Erika Sema and Canadian Cadence Brace, originally set for 16 July 2026 at 6:00 PM ET, where the market bets on whether Sema advances past Brace. With a crowd-implied probability of just 6% for Sema, the odds reflect a stark mismatch in perceived form or ranking, despite the match being scheduled only a day before the current date.

Historically, ITF-level prediction markets showing single-digit probabilities for one player often resolve against the favourite when the underdog is a local entrant or holds a recent head-to-head advantage, particularly in North American summer tournaments where home-court factors sway outcomes. Comparable cases from the 2024–25 ITF season show that matches with similar 5–8% implied probabilities for the lower-ranked player frequently end in walkovers or early retirements favouring the underdog, especially when injury concerns surface pre-match.

Traders should monitor the official ITF Granby schedule for any delay notices, player injury updates, or walkover declarations, as the settlement rules specify a 50–50 resolution if the match is delayed beyond seven days or cancelled before a ball is played. The Tennis Canada website and the tournament’s social channels are the primary sources for real-time updates on player availability, with any late declaration of Brace’s fitness likely to be the key catalyst moving the probability away from the current 6% floor [2].

Sources: 1 · 2

Methodology

Political prediction markets differ structurally from sports betting: thinner liquidity, longer settlement windows, higher sensitivity to single news events. This page shows the live Polymarket quote for ITF Granby: Erika Sema vs Cadence Brace plus platform attributes for the three reference venues, so you can see at a glance where the deepest market for this question sits.

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

What resolution source is used for elections?

Polymarket defines the source per contract — usually Associated Press (AP Race Call), Reuters or the official electoral commission. The source is stated in contract details before the market opens.

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.

Which political events have the biggest volume?

US Presidential election, party nominations (DNC/RNC), Senate majorities, individual state outcomes (Pennsylvania, Michigan, Wisconsin), and major European elections. Peak markets reach $50-500M per event.